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Batra A, Eck S, Riegel B, Friedrich S, Fuhr K, Torchalla I, Tönnies S. Hypnotherapy compared to cognitive-behavioral therapy for smoking cessation in a randomized controlled trial. Front Psychol 2024; 15:1330362. [PMID: 38476396 PMCID: PMC10929270 DOI: 10.3389/fpsyg.2024.1330362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 02/15/2024] [Indexed: 03/14/2024] Open
Abstract
Worldwide, more than eight million people die each year as a result of tobacco use. A large proportion of smokers who want to quit are interested in alternative smoking cessation methods, of which hypnotherapy is the most popular. However, the efficacy of hypnotherapy as a tobacco cessation intervention cannot be considered sufficiently proven due to significant methodological limitations in the studies available to date. The aim of the present study was to compare the efficacy of a hypnotherapeutic group program for smoking cessation with that of an established cognitive-behavioral group program in a randomized controlled trial. A total of 360 smokers who were willing to quit were randomly assigned to either hypnotherapy (HT) or cognitive-behavioral therapy (CBT) at two study sites, without regard to treatment preference. They each underwent a 6 weeks smoking cessation course (one 90 min group session per week) and were followed up at regular intervals over a 12 months period. The primary outcome variable was defined as continuous abstinence from smoking according to the Russell standard, verified by a carbon monoxide measurement at three measurement time points. Secondary outcome variables were 7 days point prevalence abstinence during the 12 months follow up and the number of cigarettes the non-quitters smoked per smoking day (smoking intensity). Generalized estimating equations were used to test treatment condition, hypnotic suggestibility, and treatment expectancy as predictors of abstinence. The two interventions did not differ significantly in the proportion of participants who remained continuously abstinent throughout the follow-up period (CBT: 15.6%, HT: 15.0%) and also regarding the 7 days abstinence rates during the 12 months follow-up (CBT: 21.2%, HT: 16.7%). However, when controlling for hypnotic suggestibility, CBT showed significantly higher 7 days abstinence rates. In terms of the continuous abstinence rates, it can be concluded that the efficacy of hypnotherapeutic methods for smoking cessation seem to be comparable to established programs such as CBT. Clinical trial registration ClinicalTrials.gov, identifier NCT01129999.
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Affiliation(s)
- Anil Batra
- Department for Psychiatry and Psychotherapy, Section for Addiction Research and Medicine, University Hospital Tuebingen, Tuebingen, Germany
| | - Sandra Eck
- Department for Psychiatry and Psychotherapy, Section for Addiction Research and Medicine, University Hospital Tuebingen, Tuebingen, Germany
| | | | | | - Kristina Fuhr
- Department for Psychiatry and Psychotherapy, Section for Addiction Research and Medicine, University Hospital Tuebingen, Tuebingen, Germany
| | | | - Sven Tönnies
- Department of Clinical Psychology and Psychotherapy, University Hamburg, Hamburg, Germany
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2
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Eason AD, Parris BA. The importance of highlighting the role of the self in hypnotherapy and hypnosis. Complement Ther Clin Pract 2024; 54:101810. [PMID: 38061322 DOI: 10.1016/j.ctcp.2023.101810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/25/2023] [Accepted: 11/20/2023] [Indexed: 01/23/2024]
Abstract
The role of the patient in hypnotherapy can be underestimated by both the therapist and the patient. This is likely due to the focus the hypnosis literature has had on the role played by the hypnotist/therapist and less on the phenomenological control (control over subjective experience) applied by the patient. Whilst early approaches to hypnosis and hypnotherapy included concepts such as autosuggestion and self-hypnosis, the role of the self has been largely overlooked. Here we aim to highlight the importance of the self in hypnotherapy and hypnosis by considering the concept of self-hypnosis and how it relates to hetero-hypnosis. We will show that: 1) historically the self was an important component of the concept of hypnosis; 2) extant theories emphasise the role of the self in hypnosis; 3) self-hypnosis is largely indistinguishable from hetero-hypnosis; 4) self-hypnosis is as effective as hetero-hypnosis. We also argue that highlighting the role of the self in hypnotherapy and hypnosis could increase feelings of self-efficacy, especially given that it can be considered a skill that can be advanced and implies self-control and not "mind-control". Highlighting the role of phenomenological control by the patient could also increase the uptake of hypnotherapy as treatment for various disorders.
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Affiliation(s)
- Adam D Eason
- Department of Psychology, Faculty of Science and Technology, Bournemouth University, UK.
| | - Benjamin A Parris
- Department of Psychology, Faculty of Science and Technology, Bournemouth University, UK
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3
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Vázquez PG, Whitfield-Gabrieli S, Bauer CCC, Barrios FA. Brain functional connectivity of hypnosis without target suggestion. An intrinsic hypnosis rs-fMRI study. World J Biol Psychiatry 2024; 25:95-105. [PMID: 37786280 DOI: 10.1080/15622975.2023.2265997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/28/2023] [Indexed: 10/04/2023]
Abstract
OBJECTIVE During hypnosis, significant changes in the BOLD signal associated with the anterior default mode network (DMN) and prefrontal attentional systems have been reported as evidence of dissociation defined since Charcot. However, it remains uncertain whether these changes are mainly attributable to the hypnotic state per se or to the target suggestions used to verify subject's state during neuroimaging studies. The aim of the present study is to evidence the brain in hypnosis, contrasting the common resting state versus neutral hypnosis (hypnosis in the absence of target suggestions). METHODS Twenty-four healthy right-handed volunteers (age 28.3 y.o., 12 females) rated moderate hypnotic responsiveness underwent resting state fMRI at 3.0 T in two sessions, once in neutral hypnosis and the other in the common resting state. Each subject's functional data were analyzed for low-frequency BOLD signal correlations seed-to-voxel for the whole brain in the first-level analysis, and seed-to-voxel in a second-level analysis to estimate group results using seeds for five resting state networks: the default mode (DMN), the central executive (CEN), the salience (SaN), the dorso-lateral attention (DAN), and the sensorimotor (SMN) networks. RESULTS In general, all network maps of the hypnotic condition presented higher connectivity than those of the resting condition. However, only contrasts for the DAN, SaN, and SMN were statistically significant, including correlated out-of-the-network regions. CONCLUSION Parietal and occipital regions displayed increased connectivity across networks, implying dissociation from the frontal cortices. This is the first fMRI intrinsic study of hypnosis without target suggestion.
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Affiliation(s)
- Pablo G Vázquez
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Susan Whitfield-Gabrieli
- Department of Brain and Cognitive Sciences, McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Psychology, Northeastern University, Boston, USA
| | - Clemens C C Bauer
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
- Department of Brain and Cognitive Sciences, McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Psychology, Northeastern University, Boston, USA
| | - Fernando A Barrios
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
- Department of Brain and Cognitive Sciences, McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
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4
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De Pascalis V. Brain Functional Correlates of Resting Hypnosis and Hypnotizability: A Review. Brain Sci 2024; 14:115. [PMID: 38391691 PMCID: PMC10886478 DOI: 10.3390/brainsci14020115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/12/2024] [Accepted: 01/18/2024] [Indexed: 02/24/2024] Open
Abstract
This comprehensive review delves into the cognitive neuroscience of hypnosis and variations in hypnotizability by examining research employing functional magnetic resonance imaging (fMRI), positron emission tomography (PET), and electroencephalography (EEG) methods. Key focus areas include functional brain imaging correlations in hypnosis, EEG band oscillations as indicators of hypnotic states, alterations in EEG functional connectivity during hypnosis and wakefulness, drawing critical conclusions, and suggesting future research directions. The reviewed functional connectivity findings support the notion that disruptions in the available integration between different components of the executive control network during hypnosis may correspond to altered subjective appraisals of the agency during the hypnotic response, as per dissociated and cold control theories of hypnosis. A promising exploration avenue involves investigating how frontal lobes' neurochemical and aperiodic components of the EEG activity at waking-rest are linked to individual differences in hypnotizability. Future studies investigating the effects of hypnosis on brain function should prioritize examining distinctive activation patterns across various neural networks.
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Affiliation(s)
- Vilfredo De Pascalis
- Department of Psychology, La Sapienza University of Rome, 00185 Rome, Italy
- School of Psychology, University of New England, Armidale, NSW 2351, Australia
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5
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Dell PF. What is the Source of Hypnotic Responses? Int J Clin Exp Hypn 2024; 72:64-83. [PMID: 38060715 DOI: 10.1080/00207144.2023.2276846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 07/04/2023] [Indexed: 01/05/2024]
Abstract
The author proposes that hypnosis is a culture-bound concept that has misattributed - to suggestion and hypnosis - the functioning of a natural, freestanding, human ability to alter personal experience. The 18th-century attribution of these phenomena (to the suggestions of a magnetizer) continues today because science and Western culture still do not explicitly acknowledge that humans possess a natural capacity to intentionally alter their own experiences. Like every other human ability (e.g. athletic, artistic, musical, mathematical, etc.), utilization of the natural human ability to intentionally alter one's personal experience does not require suggestion, trance, or hypnotic induction. This ability has been studied for over 200 years under the conceptual aegis of suggestibility and hypnosis. As a consequence, the phenomena of this freestanding ability have been veiled and conflated with hypnosis, suggestion, suggestibility, and hypnotizability. One serious consequence of this conflation is an underdeveloped, nomological network of hypnosis-centric concepts that has impeded the integration of hypnosis with the rest of science.
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Affiliation(s)
- Paul F Dell
- Churchland Psychological Center, Norfolk, Virginia, USA
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6
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Connors MH, Quinto L, Deeley Q, Halligan PW, Oakley DA, Kanaan RA. Hypnosis and suggestion as interventions for functional neurological disorder: A systematic review. Gen Hosp Psychiatry 2024; 86:92-102. [PMID: 38154334 DOI: 10.1016/j.genhosppsych.2023.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/10/2023] [Accepted: 12/10/2023] [Indexed: 12/30/2023]
Abstract
OBJECTIVE Functional neurological disorder (FND) involves the presence of neurological symptoms that cannot be explained by neurological disease. FND has long been linked to hypnosis and suggestion, both of which have been used as treatments. Given ongoing interest, this review examined evidence for the efficacy of hypnosis and suggestion as treatment interventions for FND. METHOD A systematic search of bibliographic databases was conducted to identify group studies published over the last hundred years. No restrictions were placed on study design, language, or clinical setting. Two reviewers independently assessed papers for inclusion, extracted data, and rated study quality. RESULTS The search identified 35 studies, including 5 randomised controlled trials, 2 non-randomised trials, and 28 pre-post studies. Of 1584 patients receiving either intervention, 1379 (87%) showed significant improvements, including many who demonstrated resolution of their symptoms in the short-term. Given the heterogeneity of interventions and limitations in study quality overall, more formal quantitative synthesis was not possible. CONCLUSIONS The findings highlight longstanding and ongoing interest in using hypnosis and suggestion as interventions for FND. While the findings appear promising, limitations in the evidence base, reflecting limitations in FND research more broadly, prevent definitive recommendations. Further research seems warranted given these supportive findings.
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Affiliation(s)
- Michael H Connors
- Centre for Healthy Brain Ageing, UNSW Sydney, Sydney, Australia; Department of Psychiatry, University of Melbourne, Austin Health, Melbourne, Australia.
| | - Lena Quinto
- Forensic & Analytical Science Services, NSW Health, Sydney, Australia
| | - Quinton Deeley
- Cultural and Social Neuroscience Research Group, Institute of Psychiatry, Psychology, and Neuroscience, King's College London, London, UK
| | | | - David A Oakley
- School of Psychology, Cardiff University, Cardiff, UK; Division of Psychology & Language Sciences, University College London, London, UK
| | - Richard A Kanaan
- Department of Psychiatry, University of Melbourne, Austin Health, Melbourne, Australia
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7
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Hill-Jarrett TG. The Black radical imagination: a space of hope and possible futures. Front Neurol 2023; 14:1241922. [PMID: 37808484 PMCID: PMC10557459 DOI: 10.3389/fneur.2023.1241922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 09/04/2023] [Indexed: 10/10/2023] Open
Abstract
The radical imagination entails stepping outside the confines of the now and into the expansiveness of what could be. It has been described as the ability to dream of possible futures and bring these possibilities back to the present to drive social transformation. This perspective paper seeks to provide an overview of the radical imagination and its intersections with Afrofuturism, a framework and artistic epistemology that expresses the Black cultural experience through a space of hope where Blackness is integral. In this paper, I propose three processes that comprise the radical imagination: (1) imagining alternative Black futures, (2) radical hope, and (3) collective courage. I consider the neural networks that underlie each process and consider how the Black radical imagination is a portal through which aging Black adults experience hope and envision futures that drive social change. I conclude with considerations of what brain health and healing justice looks like for aging Black Americans- specifically, how invocation of the Black radical imagination may have positive brain health effects for a demographic group at increased risk for Alzheimer's disease and related dementias.
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Affiliation(s)
- Tanisha G. Hill-Jarrett
- Global Brain Health Institute, University of California, San Francisco, San Francisco, CA, United States
- Department of Neurology, Memory and Aging Center, School of Medicine, University of California, San Francisco, San Francisco, CA, United States
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8
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Apelian C, Terhune DB, De Vignemont F. Hypnotic suggestion versus sensory modulation of bodily awareness. PLoS One 2023; 18:e0291493. [PMID: 37699046 PMCID: PMC10497174 DOI: 10.1371/journal.pone.0291493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 08/30/2023] [Indexed: 09/14/2023] Open
Abstract
Bodily awareness arises from somatosensory, vestibular, and visual inputs but cannot be reduced to these incoming sensory signals. Cognitive factors are known to also impact bodily awareness, though their specific influence is poorly understood. Here we systematically compared the effects of sensory (bottom-up) and cognitive (top-down) manipulations on the estimated size of body parts. Toward this end, in a repeated-measures design, we sought to induce the illusion that the right index finger was elongating by vibrating the biceps tendon of the left arm whilst participants grasped the tip of their right index finger (Lackner illusion; bottom-up) and separately by hypnotic suggestion (top-down), with a sham version of the Lackner illusion as an active control condition. The effects of these manipulations were assessed with perceptual and motor tasks to capture different components of the representation of body size. We found that hypnotic suggestion significantly induced the illusion in both tasks relative to the sham condition. The magnitudes of these effects were stronger than those in the Lackner illusion condition, which only produced a significantly stronger illusion than the sham condition in the perceptual task. We further observed that illusion magnitude significantly correlated across tasks and conditions, suggesting partly shared mechanisms. These results are in line with theories of separate but interacting representational processes for perception and action and highlight the influence of cognitive factors on low-level body representations.
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Affiliation(s)
- C. Apelian
- Département d’études Cognitives, Institut Jean Nicod, ENS, EHESS, CNRS, PSL University, Paris, France
- ARCHE, Formation, Paris, France
| | - D. B. Terhune
- Department of Psychology, Goldsmiths, University of London, London, United Kingdom
- Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, United Kingdom
| | - F. De Vignemont
- Département d’études Cognitives, Institut Jean Nicod, ENS, EHESS, CNRS, PSL University, Paris, France
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9
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Panda R, Vanhaudenhuyse A, Piarulli A, Annen J, Demertzi A, Alnagger N, Chennu S, Laureys S, Faymonville ME, Gosseries O. Altered Brain Connectivity and Network Topological Organization in a Non-ordinary State of Consciousness Induced by Hypnosis. J Cogn Neurosci 2023; 35:1394-1409. [PMID: 37315333 DOI: 10.1162/jocn_a_02019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Hypnosis has been shown to be of clinical utility; however, its underlying neural mechanisms remain unclear. This study aims to investigate altered brain dynamics during the non-ordinary state of consciousness induced by hypnosis. We studied high-density EEG in 9 healthy participants during eyes-closed wakefulness and during hypnosis, induced by a muscle relaxation and eyes fixation procedure. Using hypotheses based on internal and external awareness brain networks, we assessed region-wise brain connectivity between six ROIs (right and left frontal, right and left parietal, upper and lower midline regions) at the scalp level and compared across conditions. Data-driven, graph-theory analyses were also carried out to characterize brain network topology in terms of brain network segregation and integration. During hypnosis, we observed (1) increased delta connectivity between left and right frontal, as well as between right frontal and parietal regions; (2) decreased connectivity for alpha (between right frontal and parietal and between upper and lower midline regions) and beta-2 bands (between upper midline and right frontal, frontal and parietal, also between upper and lower midline regions); and (3) increased network segregation (short-range connections) in delta and alpha bands, and increased integration (long-range connections) in beta-2 band. This higher network integration and segregation was measured bilaterally in frontal and right parietal electrodes, which were identified as central hub regions during hypnosis. This modified connectivity and increased network integration-segregation properties suggest a modification of the internal and external awareness brain networks that may reflect efficient cognitive-processing and lower incidences of mind-wandering during hypnosis.
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Affiliation(s)
| | | | | | - Jitka Annen
- University of Liège, Belgium
- University Hospital of Liège, Belgium
| | | | - Naji Alnagger
- University of Liège, Belgium
- University Hospital of Liège, Belgium
| | | | - Steven Laureys
- University of Liège, Belgium
- University Hospital of Liège, Belgium
- Laval University, Québec, Canada
| | | | - Olivia Gosseries
- University of Liège, Belgium
- University Hospital of Liège, Belgium
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10
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Cardeña E, Lindström L, Goldin P, van Westen D, Mårtensson J. A neurophenomenological fMRI study of a spontaneous automatic writer and a hypnotic cohort. Brain Cogn 2023; 170:106060. [PMID: 37421816 DOI: 10.1016/j.bandc.2023.106060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/28/2023] [Accepted: 06/28/2023] [Indexed: 07/10/2023]
Abstract
PURPOSE To evaluate the neurophenomenology of automatic writing (AW) in a spontaneous automatic writer (NN) and four high hypnotizables (HH). METHODS During fMRI, NN and the HH were cued to perform spontaneous (NN) or induced (HH) AW, and a comparison task of copying complex symbols, and to rate their experience of control and agency. RESULTS Compared to copying, for all participants AW was associated with less sense of control and agency and decreased BOLD signal responses in brain regions implicated in the sense of agency (left premotor cortex and insula, right premotor cortex, and supplemental motor area), and increased BOLD signal responses in the left and right temporoparietal junctions and the occipital lobes. During AW, the HH differed from NN in widespread BOLD decreases across the brain and increases in frontal and parietal regions. CONCLUSIONS Spontaneous and induced AW had similar effects on agency, but only partly overlapping effects on cortical activity.
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Affiliation(s)
- Etzel Cardeña
- CERCAP, Department of Psychology, Lund University, Sweden.
| | - Lena Lindström
- CERCAP, Department of Psychology, Lund University, Sweden
| | | | - Danielle van Westen
- Institution for Clinical Sciences, Diagnostic Radiology, Lund University, Sweden
| | - Johan Mårtensson
- Department of Clinical Sciences Lund, Logopedics, Phoniatrics and Audiology, Lund University, Sweden
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11
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Comparative effects of hypnotic suggestion and imagery instruction on bodily awareness. Conscious Cogn 2023; 108:103473. [PMID: 36706563 DOI: 10.1016/j.concog.2023.103473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 10/31/2022] [Accepted: 01/12/2023] [Indexed: 01/26/2023]
Abstract
Bodily awareness is informed by both sensory data and prior knowledge. Although misleading sensory signals have been repeatedly shown to affect bodily awareness, only scant attention has been given to the influence of cognitive variables. Hypnotic suggestion has recently been shown to impact visuospatial and sensorimotor representations of body-part size although the mechanisms subserving this effect are yet to be identified. Mental imagery might play a causal or facilitative role in this effect, as it has been shown to influence body awareness in previous studies. Nonetheless, current views ascribe only an epiphenomenal role to imagery in the implementation of hypnotic suggestions. This study compared the effects of hypnotic suggestion and imagery instruction for influencing the visuospatial and sensorimotor aspects of body-size representation. Both experimental manipulations produced significant increases (elongation) in both representations compared to baseline, although the effects were larger in the hypnotic suggestion condition. The effects of both manipulations were highly correlated across participants, suggesting overlapping mechanisms. Self-reports suggested that the use of voluntary imagery did not significantly contribute to the efficacy of either manipulation. Rather, top-down effects on body representations seem to be partly driven by response expectancies, spontaneous imagery, and hypnotic suggestibility in both conditions. These results are in line with current theories of suggestion and raise fundamental questions regarding the mechanisms driving the influence of cognition on body representations.
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12
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Walsh E, Oakley DA. Editing reality in the brain. Neurosci Conscious 2022; 2022:niac009. [PMID: 35903411 PMCID: PMC9319104 DOI: 10.1093/nc/niac009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/30/2022] [Accepted: 06/17/2022] [Indexed: 11/21/2022] Open
Abstract
Recent information technologies such as virtual reality (VR) and augmented reality (AR)
allow the creation of simulated sensory worlds with which we can interact. Using
programming language, digital details can be overlaid onto displays of our environment,
confounding what is real and what has been artificially engineered. Natural language,
particularly the use of direct verbal suggestion (DVS) in everyday and hypnotic contexts,
can also manipulate the meaning and significance of objects and events in ourselves and
others. In this review, we focus on how socially rewarding language can construct and
influence reality. Language is symbolic, automatic and flexible and can be used to augment
bodily sensations e.g. feelings of heaviness in a limb or suggest a colour that is not
there. We introduce the term ‘suggested reality’ (SR) to refer to the important role that
language, specifically DVS, plays in constructing, maintaining and manipulating our shared
reality. We also propose the term edited reality to encompass the wider influence of
information technology and linguistic techniques that results in altered subjective
experience and review its use in clinical settings, while acknowledging its limitations.
We develop a cognitive model indicating how the brain’s central executive structures use
our personal and linguistic-based narrative in subjective awareness, arguing for a central
role for language in DVS. A better understanding of the characteristics of VR, AR and SR
and their applications in everyday life, research and clinical settings can help us to
better understand our own reality and how it can be edited.
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Affiliation(s)
- Eamonn Walsh
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - David A Oakley
- Division of Psychology and Language Sciences, University College London, London, UK
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13
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Occupational Health and Safety Receptivity towards Clinical Innovations That Can Benefit Workplace Mental Health Programs: Anxiety and Hypnotherapy Trends. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19137735. [PMID: 35805401 PMCID: PMC9265652 DOI: 10.3390/ijerph19137735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/08/2022] [Accepted: 06/14/2022] [Indexed: 12/02/2022]
Abstract
Anxiety is one of the most common mental health conditions experienced by people in Australia during their working years according to the Australian Bureau of Statistics (ABS) and employers recognising that mental health impacts their organisation’s bottom line are increasingly interested in programs to promote better mental health, well-being, and productivity. Beyond management concern for productivity, statutory protection is necessary to safeguard mental health, under the Australian Occupational Health and Safety (OHS) Act, organisations have a duty to eliminate or minimise risks to psychological (mental) health by designing effective workplace systems and Occupational Health and Safety (OHS) practitioners are central to the design and responsibility in managing these systems. Despite literature indicating the benefits of OHS workplace mental health initiatives, such as improved overall health, reduced absenteeism, increased job satisfaction and morale, there remains a lack of empirical research around program measurement, and their effectiveness in this area has been brought into question. The OHS function is interested in improving research around the relationship and connection between work performance and mental health but: there are few studies regarding performance outcomes of mental health OHS services within management journals and insufficient information around the prevalence of psychological morbidity in the workplace and its impact. The purpose of this study was to assess OHS perception regarding anxiety and reveal perceptions and receptivity towards alternative therapies and solutions being used in clinical practice to deal with anxiety such as cognitive behavioural therapy (CBT) with a focus on Hypnotherapy.
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Comșa LT, David OA, David DO. Eating Behavior-Choice or Reconstruction of Past Experience? A Randomized Clinical Trial of Changing Eating Intentions of Healthy Adults Through Hypnotic Suggestions. Behav Ther 2022; 53:323-333. [PMID: 35227407 DOI: 10.1016/j.beth.2021.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 09/11/2021] [Accepted: 09/18/2021] [Indexed: 11/15/2022]
Abstract
Recent meta-analyses have shown that psychological interventions have a small to medium effect on weight loss. We propose here a different approach to changing eating intentions. According to the Free Will literature, people decide to act before they acknowledge it, and they decide based on the reconstruction of previous experiences. The action can thus be inhibited immediately (max 100 ms) after awareness. We wanted to test if intervention based on this model, using hypnotic suggestions, can effectively change the intentions of eating. This study aims to identify which format of hypnotic suggestion can be more effective in changing eating intentions regarding high-calorie foods. Therefore, 88 healthy adult participants randomized in four groups received one session of hypnotic induction and suggestions or placebo. We measured the eating intentions through a computer task in which participants could choose pictures of low and high caloric food before, during, and after hypnosis. For the within-subject effect, results showed that two types of hypnotic suggestions significantly impacted the intentions of eating on high-calorie foods with large-effect, namely Cognitive Rehearsal (d = 0.81, p < .001) and Memory Substitution (d = 0.82, p < .001). After controlling for pretest ratings, we found a significant between-effect: the Cognitive Rehearsal group differed significantly from the Control in terms of intentions of eating (d = 0.85, p < .05). We conclude that hypnosis with Cognitive Rehearsal suggestions can help to positively impact the intentions of eating.
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Franz M, Schmidt B, Hecht H, Naumann E, Miltner WHR. Suggested visual blockade during hypnosis: Top-down modulation of stimulus processing in a visual oddball task. PLoS One 2021; 16:e0257380. [PMID: 34525129 PMCID: PMC8443036 DOI: 10.1371/journal.pone.0257380] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 08/31/2021] [Indexed: 11/24/2022] Open
Abstract
Several theories of hypnosis assume that responses to hypnotic suggestions are implemented through top-down modulations via a frontoparietal network that is involved in monitoring and cognitive control. The current study addressed this issue re-analyzing previously published event-related-potentials (ERP) (N1, P2, and P3b amplitudes) and combined it with source reconstruction and connectivity analysis methods. ERP data were obtained from participants engaged in a visual oddball paradigm composed of target, standard, and distractor stimuli during a hypnosis (HYP) and a control (CON) condition. In both conditions, participants were asked to count the rare targets presented on a video screen. During HYP participants received suggestions that a wooden board in front of their eyes would obstruct their view of the screen. The results showed that participants’ counting accuracy was significantly impaired during HYP compared to CON. ERP components in the N1 and P2 window revealed no amplitude differences between CON and HYP at sensor-level. In contrast, P3b amplitudes in response to target stimuli were significantly reduced during HYP compared to CON. Source analysis of the P3b amplitudes in response to targets indicated that HYP was associated with reduced source activities in occipital and parietal brain areas related to stimulus categorization and attention. We further explored how these brain sources interacted by computing time-frequency effective connectivity between electrodes that best represented frontal, parietal, and occipital sources. This analysis revealed reduced directed information flow from parietal attentional to frontal executive sources during processing of target stimuli. These results provide preliminary evidence that hypnotic suggestions of a visual blockade are associated with a disruption of the coupling within the frontoparietal network implicated in top-down control.
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Affiliation(s)
- Marcel Franz
- Institute of Psychology, Friedrich Schiller University of Jena, Jena, Germany
| | - Barbara Schmidt
- Institute of Psychology, Friedrich Schiller University of Jena, Jena, Germany
| | - Holger Hecht
- Institute of Psychology, Friedrich Schiller University of Jena, Jena, Germany
| | - Ewald Naumann
- Institute of Psychology, University of Trier, Trier, Germany
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16
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Facco E, Bacci C, Zanette G. Hypnosis as sole anesthesia for oral surgery: The egg of Columbus. J Am Dent Assoc 2021; 152:756-762. [PMID: 34332655 DOI: 10.1016/j.adaj.2021.04.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/22/2021] [Accepted: 04/23/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND AND OVERVIEW Hypnosis, despite its effectiveness, has been neglected. The aim of this study is to show the effectiveness and manageability of hypnosis as a stand-alone technique in dentistry. CASE DESCRIPTION Three patients underwent 6 oral surgery procedures (surgical third-molar removal, implant surgery, maxillary bone augmentation, and mucogingival surgery) with hypnosis as the only anesthetic. Two of the 3 patients had difficulties: 1 was sensitive to multiple chemicals, had Addison disease, and had previously experienced anaphylactic reactions to local anesthetics; the other was allergic to lidocaine and had undergone a paradoxical reaction to pharmacologic sedation in the past. All 3 patients had 2 preoperative sessions each to assess their perioperative risk, level of anxiety, hypnotic susceptibility, and capacity to develop full hypnotic analgesia. On a surgery day, hypnosis was induced and hypnotic analgesia was obtained according to a standard protocol, a procedure taking no more than 9 minutes in each case. Each surgical procedure was then completed successfully with the patient in a painless condition of full relaxation and sense of well-being, with stable cardiovascular parameters. None of the patients required postoperative analgesics, which were prescribed for use as needed. CONCLUSIONS AND PRACTICAL IMPLICATIONS Hypnosis is a valuable tool in dentistry, enabling the safe and rapid relief of anxiety and phobia and raising patient pain thresholds to the level of surgical analgesia. Unlike drugs and equipment, it is always readily available, cost-free, and has no adverse effects when administered by competent professionals. Hypnosis can be used for sedation in most patients and as a stand-alone technique in those with appropriate hypnotic susceptibility, improving the well-being and safety of patients.
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Lanfranco RC, Rivera-Rei Á, Huepe D, Ibáñez A, Canales-Johnson A. Beyond imagination: Hypnotic visual hallucination induces greater lateralised brain activity than visual mental imagery. Neuroimage 2021; 239:118282. [PMID: 34146711 DOI: 10.1016/j.neuroimage.2021.118282] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/10/2021] [Accepted: 06/16/2021] [Indexed: 01/17/2023] Open
Abstract
Hypnotic suggestions can produce a broad range of perceptual experiences, including hallucinations. Visual hypnotic hallucinations differ in many ways from regular mental images. For example, they are usually experienced as automatic, vivid, and real images, typically compromising the sense of reality. While both hypnotic hallucination and mental imagery are believed to mainly rely on the activation of the visual cortex via top-down mechanisms, it is unknown how they differ in the neural processes they engage. Here we used an adaptation paradigm to test and compare top-down processing between hypnotic hallucination, mental imagery, and visual perception in very highly hypnotisable individuals whose ability to hallucinate was assessed. By measuring the N170/VPP event-related complex and using multivariate decoding analysis, we found that hypnotic hallucination of faces involves greater top-down activation of sensory processing through lateralised neural mechanisms in the right hemisphere compared to mental imagery. Our findings suggest that the neural signatures that distinguish hypnotically hallucinated faces from imagined faces lie in the right brain hemisphere.
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Affiliation(s)
- Renzo C Lanfranco
- Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom; Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden.
| | - Álvaro Rivera-Rei
- Latin American Brain Health Institute (BrainLat) & Center for Social and Cognitive Neuroscience, Universidad Adolfo Ibáñez, Santiago, Chile
| | - David Huepe
- Latin American Brain Health Institute (BrainLat) & Center for Social and Cognitive Neuroscience, Universidad Adolfo Ibáñez, Santiago, Chile
| | - Agustín Ibáñez
- Latin American Brain Health Institute (BrainLat) & Center for Social and Cognitive Neuroscience, Universidad Adolfo Ibáñez, Santiago, Chile; Cognitive Neuroscience Center, Universidad de San Andrés, Buenos Aires, Argentina; National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina; Global Brain Health Institute, University of California San Francisco, San Francisco, United States of America, and Trinity College Dublin, Dublin, Ireland
| | - Andrés Canales-Johnson
- Department of Psychology, University of Cambridge, Cambridge, United Kingdom; Vicerrectoría de Investigación y Posgrado, Universidad Católica del Maule, Talca, Chile.
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18
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Halligan PW, Oakley DA. Giving Up on Consciousness as the Ghost in the Machine. Front Psychol 2021; 12:571460. [PMID: 33995166 PMCID: PMC8121175 DOI: 10.3389/fpsyg.2021.571460] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 03/22/2021] [Indexed: 11/13/2022] Open
Abstract
Consciousness as used here, refers to the private, subjective experience of being aware of our perceptions, thoughts, feelings, actions, memories (psychological contents) including the intimate experience of a unified self with the capacity to generate and control actions and psychological contents. This compelling, intuitive consciousness-centric account has, and continues to shape folk and scientific accounts of psychology and human behavior. Over the last 30 years, research from the cognitive neurosciences has challenged this intuitive social construct account when providing a neurocognitive architecture for a human psychology. Growing evidence suggests that the executive functions typically attributed to the experience of consciousness are carried out competently, backstage and outside subjective awareness by a myriad of fast, efficient non-conscious brain systems. While it remains unclear how and where the experience of consciousness is generated in the brain, we suggested that the traditional intuitive explanation that consciousness is causally efficacious is wrong-headed when providing a cognitive neuroscientific account of human psychology. Notwithstanding the compelling 1st-person experience (inside view) that convinces us that subjective awareness is the mental curator of our actions and thoughts, we argue that the best framework for building a scientific account is to be consistent with the biophysical causal dependency of prior neural processes. From a 3rd person perspective, (outside view), we propose that subjective awareness lacking causal influence, is (no more) than our experience of being aware, our awareness of our psychological content, knowing that we are aware, and the belief that that such experiences are evidence of an agentive capacity shared by others. While the human mind can be described as comprising both conscious and nonconscious aspects, both ultimately depend on neural process in the brain. In arguing for the counter-intuitive epiphenomenal perspective, we suggest that a scientific approach considers all mental aspects of mind including consciousness in terms of their underlying, preceding (causal) biological changes, in the realization that most brain processes are not accompanied by any discernible change in subjective awareness.
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Affiliation(s)
- Peter W Halligan
- School of Psychology, Cardiff University, Cardiff, United Kingdom
| | - David A Oakley
- Division of Psychology and Language Sciences, University College London, London, United Kingdom
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19
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Oakley DA, Walsh E, Mehta MA, Halligan PW, Deeley Q. Direct verbal suggestibility: Measurement and significance. Conscious Cogn 2021; 89:103036. [DOI: 10.1016/j.concog.2020.103036] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 08/19/2020] [Accepted: 10/09/2020] [Indexed: 10/22/2022]
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20
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Parris BA, Hasshim N, Dienes Z. Look into my eyes: Pupillometry reveals that a post-hypnotic suggestion for word blindness reduces Stroop interference by marshalling greater effortful control. Eur J Neurosci 2021; 53:2819-2834. [PMID: 33423342 DOI: 10.1111/ejn.15105] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 12/23/2020] [Accepted: 12/24/2020] [Indexed: 11/28/2022]
Abstract
The mechanisms underpinning the apparently remarkable levels of cognitive and behavioural control following hypnosis and hypnotic suggestion are poorly understood. Numerous independent studies have reported that Stroop interference can be reduced following a post-hypnotic suggestion that asks participants to perceive words as if made up of characters from a foreign language. This effect indicates that frontal executive functions can be more potent than is generally accepted and has been described as resulting from top-down control not normally voluntarily available. We employed eye tracking and pupillometry to investigate whether the effect results from voluntary visuo-attentional strategies (subtly looking away from the word to prevent optimal word processing), reduced response conflict but not overall conflict, Stroop effects being pushed from response selection to response execution (response durations) or increased proactive effortful control given enhanced contextual motivation (as indexed via pupil dilation). We replicated the reduction in Stroop interference following the suggestion despite removing any trials on which eye movements were not consistent with optimal word processing. Our data were inconclusive with regards to conflict type affected by the suggestion in the latency data, although preserved semantic conflict was evident in the pupil data. There was also no evidence of Stroop effects on response durations. However, we show that baseline-corrected pupil sizes were larger following the suggestion indicating the socio-cognitive context and experimental demands motivate participants to marshal greater effortful control.
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Affiliation(s)
| | - Nabil Hasshim
- Department of Psychology, Bournemouth University, Poole, UK
| | - Zoltan Dienes
- Department of Psychology, University of Sussex, Brighton, UK
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21
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Abstract
The most well-established finding gleaned from decades of experimental hypnosis research is that individuals display marked variability in responsiveness to hypnotic suggestions. Insofar as this variability impacts both treatment outcome in therapeutic applications of hypnosis as well as responsiveness to suggestions in experimental contexts, it is imperative that clinicians and researchers use robust measures of hypnotic suggestibility. The current paper critically evaluates contemporary measures of hypnotic suggestibility. After reviewing the most widely used measures, we identify multiple properties of these instruments that result in the loss of valuable information, including binary scoring and single-trial sampling, and hinder their utility, such as the inclusion of suboptimal suggestion content. The scales are not well-suited for contemporary research questions and have outlived their usefulness. We conclude by outlining ways in which the measurement of hypnotic suggestibility can be advanced.
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Affiliation(s)
- David J Acunzo
- CIMeC-Centre for Mind/Brain Sciences, University of Trento , Italy
| | - Devin B Terhune
- Department of Psychology, Goldsmiths, University of London , UK
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22
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Fazekas P, Nemeth G. Dreaming, Mind-Wandering, and Hypnotic Dreams. Front Neurol 2020; 11:565673. [PMID: 33162928 PMCID: PMC7581699 DOI: 10.3389/fneur.2020.565673] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 09/04/2020] [Indexed: 11/19/2022] Open
Abstract
Hobson's AIM theory offers a general framework for thinking about states of consciousness like wakefulness, REM dreaming and NREM mentations in terms of a state space defined by the dimensions of the level of brain activity, the source of input, and the type of neurochemical modulation. This account inspired theoretical models of other altered states of consciousness—including hypnosis—claiming that studying REM dreaming can advance our understanding of these phenomena as well. However, recent developments showed that hypnosis is not a sleep like stage, and that the REM-centric attitude toward dreaming is mistaken. At the same time, the advancement of the neuro-cognitive theory claiming that dreaming and mind-wandering are on a continuum both underlain by default-mode network activity called many aspects of the AIM theory into question. Our aim in this paper is to show that certain hypnotic states—hypnotic dreams (experiences that subjects have in a hypnotic state as a result of an explicit suggestion to have a dream)—can, nevertheless, be highly relevant for the neuro-cognitive theory, and that their comparison with dreaming and mind-wandering has the potential to advance the field in unexpected ways.
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Affiliation(s)
- Peter Fazekas
- Center of Functionally Integrative Neuroscience, Aarhus University, Aarhus, Denmark
- Centre for Philosophical Psychology, University of Antwerp, Antwerp, Belgium
- *Correspondence: Peter Fazekas
| | - Georgina Nemeth
- Center of Functionally Integrative Neuroscience, Aarhus University, Aarhus, Denmark
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23
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Hypnosis-induced modulation of corticospinal excitability during motor imagery. Sci Rep 2020; 10:16882. [PMID: 33037277 PMCID: PMC7547693 DOI: 10.1038/s41598-020-74020-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 07/23/2020] [Indexed: 11/08/2022] Open
Abstract
Hypnosis can be considered an altered state of consciousness in which individuals produce movements under suggestion without apparent voluntary control. Despite its application in contexts implying motor control, evidence for the neurophysiological mechanisms underlying hypnosis is scarce. Inter-individual differences in hypnotic susceptibility suggest that sensorimotor strategies may manifest in a hypnotic state. We tested by means of transcranial magnetic stimulation applied over the primary motor cortex whether motor system activation during a motor imagery task differs in the awake and in the hypnotic state. To capture individual differences, 30 healthy volunteers were classified as high or low hypnotizable (Highs and Lows) according to ad-hoc validated scales measuring hypnotic susceptibility and personality questionnaires. Corticospinal activation during motor imagery in the hypnotic state was greater in the Highs than the Lows. Intrinsic motivation in task performance and level of persuasion modulated corticospinal activation in the Highs. Corticospinal system activation under hypnosis may have practical implications that merit research in areas where hypnosis can be applied to improve motor performance, such as loss of motor abilities and sports.
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24
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Palfi B, Moga G, Lush P, Scott RB, Dienes Z. Can hypnotic suggestibility be measured online? PSYCHOLOGICAL RESEARCH 2020; 84:1460-1471. [PMID: 30834966 PMCID: PMC7270050 DOI: 10.1007/s00426-019-01162-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 02/27/2019] [Indexed: 12/02/2022]
Abstract
Hypnosis and hypnotic suggestions are gradually gaining popularity within the consciousness community as established tools for the experimental manipulation of illusions of involuntariness, hallucinations and delusions. However, hypnosis is still far from being a widespread instrument; a crucial hindrance to taking it up is the amount of time needed to invest in identifying people high and low in responsiveness to suggestion. In this study, we introduced an online assessment of hypnotic response and estimated the extent to which the scores and psychometric properties of an online screening differ from an offline one. We propose that the online screening of hypnotic response is viable as it reduces the level of responsiveness only by a slight extent. The application of online screening may prompt researchers to run large-scale studies with more heterogeneous samples, which would help researchers to overcome some of the issues underlying the current replication crisis in psychology.
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Affiliation(s)
- Bence Palfi
- School of Psychology, University of Sussex, Brighton, UK.
- Sackler Centre for Consciousness Science, University of Sussex, Brighton, UK.
| | - G Moga
- School of Psychology, University of Sussex, Brighton, UK
| | - P Lush
- Sackler Centre for Consciousness Science, University of Sussex, Brighton, UK
- School of Informatics, University of Sussex, Brighton, UK
| | - R B Scott
- School of Psychology, University of Sussex, Brighton, UK
- Sackler Centre for Consciousness Science, University of Sussex, Brighton, UK
| | - Z Dienes
- School of Psychology, University of Sussex, Brighton, UK
- Sackler Centre for Consciousness Science, University of Sussex, Brighton, UK
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25
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Connors MH, Halligan PW. Delusions and theories of belief. Conscious Cogn 2020; 81:102935. [DOI: 10.1016/j.concog.2020.102935] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 03/28/2020] [Accepted: 04/08/2020] [Indexed: 02/01/2023]
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26
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Higher hypnotic suggestibility is associated with the lower EEG signal variability in theta, alpha, and beta frequency bands. PLoS One 2020; 15:e0230853. [PMID: 32271781 PMCID: PMC7145105 DOI: 10.1371/journal.pone.0230853] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 03/10/2020] [Indexed: 12/20/2022] Open
Abstract
Variation of information in the firing rate of neural population, as reflected in different frequency bands of electroencephalographic (EEG) time series, provides direct evidence for change in neural responses of the brain to hypnotic suggestibility. However, realization of an effective biomarker for spiking behaviour of neural population proves to be an elusive subject matter with its impact evident in highly contrasting results in the literature. In this article, we took an information-theoretic stance on analysis of the EEG time series of the brain activity during hypnotic suggestions, thereby capturing the variability in pattern of brain neural activity in terms of its information content. For this purpose, we utilized differential entropy (DE, i.e., the average information content in a continuous time series) of theta, alpha, and beta frequency bands of fourteen-channel EEG time series recordings that pertain to the brain neural responses of twelve carefully selected high and low hypnotically suggestible individuals. Our results show that the higher hypnotic suggestibility is associated with a significantly lower variability in information content of theta, alpha, and beta frequencies. Moreover, they indicate that such a lower variability is accompanied by a significantly higher functional connectivity (FC, a measure of spatiotemporal synchronization) in the parietal and the parieto-occipital regions in the case of theta and alpha frequency bands and a non-significantly lower FC in the central region’s beta frequency band. Our results contribute to the field in two ways. First, they identify the applicability of DE as a unifying measure to reproduce the similar observations that are separately reported through adaptation of different hypnotic biomarkers in the literature. Second, they extend these previous findings that were based on neutral hypnosis (i.e., a hypnotic procedure that involves no specific suggestions other than those for becoming hypnotized) to the case of hypnotic suggestions, thereby identifying their presence as a potential signature of hypnotic experience.
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27
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Liu Y, He Y, Li R, Yu S, Xu J, Xie Y. Coupled Temporal Fluctuation and Global Signal Synchronization of Spontaneous Brain Activity in Hypnosis for Respiration Control: An fMRI Study. Neuroscience 2020; 429:56-67. [PMID: 31917344 DOI: 10.1016/j.neuroscience.2019.12.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 01/24/2023]
Abstract
Hypnosis is a psychological technology proved to be effective in respiratory motion control, which is essential to reduce radiation dose during radiotherapy. This study explored the neural mechanisms and cognitive neuroscience of hypnosis for respiration control by functional magnetic resonance imaging with a within-subject design of 15 healthy volunteers in rest state (RS) and hypnosis state (HS). Temporal fluctuation and signal synchronization of brain activity were employed to investigate the altered physiological performance in hypnosis. The altered correlations between temporal fluctuation and signal synchronization were examined within large scale of intrinsic networks which were identified by seed-wise functional connectivity. As a result, hypnosis was observed with increased activity in the right calcarine, bilateral fusiform gyrus and left middle temporal gyrus, and with decreased activity in the left cerebellum posterior lobe (inferior semilunar lobule part). Compared to RS, enhanced positive correlations were observed between temporal fluctuation and signal synchronization in HS. Most importantly, coupled correlation was observed between temporal fluctuation and global signal synchronization within the identified intrinsic networks (R = 0.3843, p > 0.05 in RS; R = 0.6212, p < 0.005 in HS). The findings provide implications for the neural basis of hypnosis for respiratory motion control and suggest the involvement of emotional processing and regulation of perceptual consciousness in hypnosis.
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Affiliation(s)
- Yanjun Liu
- Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yini He
- Key Laboratory for NeuroInformation of Ministry of Education, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Rongmao Li
- Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; Team of Artificial Intelligence Research and Development, Science and Technology Center, Ping An Life Insurance of China Co., Ltd., Shenzhen 518000, China
| | - Shaode Yu
- Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; Department of Radiation Oncology, University of Texas, Southwestern Medical Center, Dallas, TX 75390, United States
| | - Jianyang Xu
- Department of Traditional Chinese Medicine, Shenzhen University General Hospital, Shenzhen 518055, China
| | - Yaoqin Xie
- Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
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28
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Oakley DA, Walsh E, Lillelokken AM, Halligan PW, Mehta MA, Deeley Q. UNITED KINGDOM NORMS FOR THE HARVARD GROUP SCALE OF HYPNOTIC SUSCEPTIBILITY, FORM A. Int J Clin Exp Hypn 2020; 68:80-104. [PMID: 31914370 DOI: 10.1080/00207144.2020.1682257] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The Harvard Group Scale of Hypnotic Susceptibility, Form A (HGSHS:A), is widely used as a measure of suggestibility to screen participants for research purposes. To date, there have been a number of normative studies of the HGSHS:A, the majority of which originate from Western countries. The outcomes of these Western studies are summarized, and variations in methodologies are described and discussed. Also reported are the psychometric properties of the HGSHS:A in a large contemporary United Kingdom (UK) sample. Overall, these UK results are consistent with the earlier Western norms studies in terms of response distribution and item difficulty, with only minor differences. The continued use of HGSHS:A as a screening procedure is supported, particularly if corrected for response subjectivity/involuntariness and with revised amnesia scoring. The HGSHS:A is also important as a potential measure of the broader trait of direct verbal suggestibility.
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Affiliation(s)
- David A Oakley
- Division of Psychology and Language Sciences, University College London, UK.,School of Psychology, Cardiff University, UK
| | - Eamonn Walsh
- Cultural and Social Neuroscience Research Group, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
| | - Ann-Mari Lillelokken
- Cultural and Social Neuroscience Research Group, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
| | | | - Mitul A Mehta
- Cultural and Social Neuroscience Research Group, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
| | - Quinton Deeley
- Cultural and Social Neuroscience Research Group, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
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29
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Ho KY, Lam KKW, Chung JOK, Xia W, Cheung AT, Ho LK, Chiu SY, Chan GCF, Li HCW. Systematic review of the effectiveness of complementary and alternative medicine on nausea and vomiting in children with cancer: a study protocol. BMJ Open 2019; 9:e031834. [PMID: 31628132 PMCID: PMC6803108 DOI: 10.1136/bmjopen-2019-031834] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
INTRODUCTION Nausea and vomiting are two most common symptoms reported by children with cancer when they undergo active treatment. However, pharmacological treatment is not sufficient to manage these two symptoms, with over 40% of children still experience nausea and vomiting after receiving antiemetics. There has been an exponential growth of studies to demonstrate the effectiveness of different complementary complementary medicine (CAM) to control nausea and vomiting during cancer treatment. Appropriate application of CAM enhances the effectiveness of antiemetics, thus reducing the symptom burden on children as well as improving their general condition and quality of life during cancer treatment. Nevertheless, it remains unclear which CAM is the best approach to help children to prevent or reduce nausea and vomiting during and after cancer treatment. This paper describes a protocol for identifying, analysing and synthesising research evidence on the effectiveness of CAM on nausea and vomiting in children with cancer. METHODS AND ANALYSIS A total of 10 databases will be searched to identify appropriate literature: MEDLINE, the Cochrane Central Register of Controlled Trials (CENTRAL), EMBASE, CINAHL, PsycINFO, LILACS, OpenSIGLE, the Chinese Biomedical Literature Database, the Chinese Medical Current Contents and the Chinese National Knowledge Infrastructure. All randomised controlled trials which meet the inclusion criteria will be included. The primary outcome is the changes in nausea and vomiting either assessed by self-reported and/or objective measures. Review Manager 5.3 will be used to synthesise the data, calculate the treatment effects, perform any subgroup analysis and assess the risk of bias. ETHICAL AND DISSEMINATION The results will be presented at international conferences and published in peer-reviewed journals. As no individual data will be involved in this review, ethical approval is not required. PROSPERO REGISTRATION NUMBER CRD42019135404.
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Affiliation(s)
- Ka Yan Ho
- School of Nursing, The Hong Kong Polytechnic University, Hong Kong, China
| | | | | | - Wei Xia
- School of Nursing, The University of Hong Kong, Hong Kong, China
| | - Ankie Tan Cheung
- School of Nursing, The University of Hong Kong, Hong Kong, China
| | - Long Kwan Ho
- School of Nursing, The University of Hong Kong, Hong Kong, China
| | - Sau Ying Chiu
- Department of Paediatrics & Adolescent Medicine, Hong Kong Children's Hospital, Hong Kong, China
| | - Godfrey Chi Fung Chan
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong, China
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Martial C, Mensen A, Charland-Verville V, Vanhaudenhuyse A, Rentmeister D, Bahri MA, Cassol H, Englebert J, Gosseries O, Laureys S, Faymonville ME. Neurophenomenology of near-death experience memory in hypnotic recall: a within-subject EEG study. Sci Rep 2019; 9:14047. [PMID: 31575924 PMCID: PMC6773844 DOI: 10.1038/s41598-019-50601-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 09/12/2019] [Indexed: 12/30/2022] Open
Abstract
The neurobiological basis of near-death experiences (NDEs) is unknown, but a few studies attempted to investigate it by reproducing in laboratory settings phenomenological experiences that seem to closely resemble NDEs. So far, no study has induced NDE-like features via hypnotic modulation while simultaneously measuring changes in brain activity using high-density EEG. Five volunteers who previously had experienced a pleasant NDE were invited to re-experience the NDE memory and another pleasant autobiographical memory (dating to the same time period), in normal consciousness and with hypnosis. We compared the hypnosis-induced subjective experience with the one of the genuine experience memory. Continuous high-density EEG was recorded throughout. At a phenomenological level, we succeeded in recreating NDE-like features without any adverse effects. Absorption and dissociation levels were reported as higher during all hypnosis conditions as compared to normal consciousness conditions, suggesting that our hypnosis-based protocol increased the felt subjective experience in the recall of both memories. The recall of a NDE phenomenology was related to an increase of alpha activity in frontal and posterior regions. This study provides a proof-of-concept methodology for studying the phenomenon, enabling to prospectively explore the NDE-like features and associated EEG changes in controlled settings.
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Affiliation(s)
- Charlotte Martial
- GIGA-Consciousness, University of Liège, Liège, Belgium. .,Centre du Cerveau², University Hospital of Liège, Liège, Belgium.
| | - Armand Mensen
- GIGA-Consciousness, University of Liège, Liège, Belgium
| | - Vanessa Charland-Verville
- GIGA-Consciousness, University of Liège, Liège, Belgium.,Centre du Cerveau², University Hospital of Liège, Liège, Belgium
| | - Audrey Vanhaudenhuyse
- GIGA-Sensation & Perception Research Group, University of Liège, Liège, Belgium.,Department of Algology, University Hospital of Liège, Liège, Belgium
| | | | - Mohamed Ali Bahri
- GIGA-Cyclotron Research Centre In Vivo Imaging, University of Liège, Liège, Belgium
| | - Héléna Cassol
- GIGA-Consciousness, University of Liège, Liège, Belgium.,Centre du Cerveau², University Hospital of Liège, Liège, Belgium
| | | | - Olivia Gosseries
- GIGA-Consciousness, University of Liège, Liège, Belgium.,Centre du Cerveau², University Hospital of Liège, Liège, Belgium
| | - Steven Laureys
- GIGA-Consciousness, University of Liège, Liège, Belgium.,Centre du Cerveau², University Hospital of Liège, Liège, Belgium
| | - Marie-Elisabeth Faymonville
- GIGA-Sensation & Perception Research Group, University of Liège, Liège, Belgium.,Department of Algology, University Hospital of Liège, Liège, Belgium
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31
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Conversa G, Facco E, Leoni MLG, Buonocore M, Bagnasco R, Angelini L, Demartini L, Spiegel D. Quantitative Sensory Testing (QST) Estimation of Regional Cutaneous Thermal Sensitivity During Waking State, Neutral Hypnosis, and Temperature Specific Suggestions. Int J Clin Exp Hypn 2019; 67:364-381. [PMID: 31251711 DOI: 10.1080/00207144.2019.1613864] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
This study aimed to determine the effects of neutral hypnosis and hypnotic temperature suggestions in thermal and pain thresholds compared to resting state. Sixteen healthy medium or high hypnotizable volunteers were enrolled. Hypnotizability was assessed with the Hypnotic Induction Profile (HIP); QST was checked in resting state, in neutral hypnosis, after suggestions of heat and cold, and after deinduction. A significant increase in heat threshold was recorded during hypnosis with both cold and heat suggestions compared to neutral hypnosis. HIP induction score showed a linear correlation with changes of temperature thresholds after heat and cold suggestions. Thermal suggestions may result in a significant increase of heat perception thresholds with respect to neutral hypnosis. HIP score is related to thermal threshold changes. QST is a valuable and manageable tool to measure temperature threshold change during hypnosis.
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Affiliation(s)
| | - Enrico Facco
- b University of Padua and Inst. F. Granone - Italian Center of Clinical and Experimental Hypnosis (CIICS) , Turin , Italy
| | | | | | | | | | | | - David Spiegel
- d Stanford University School of Medicine , Stanford , CA , USA
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Facco E, Mendozzi L, Bona A, Motta A, Garegnani M, Costantini I, Dipasquale O, Cecconi P, Menotti R, Coscioli E, Lipari S. Dissociative identity as a continuum from healthy mind to psychiatric disorders: Epistemological and neurophenomenological implications approached through hypnosis. Med Hypotheses 2019; 130:109274. [PMID: 31383343 DOI: 10.1016/j.mehy.2019.109274] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 06/05/2019] [Accepted: 06/10/2019] [Indexed: 12/19/2022]
Abstract
The topic of multiple personality, redefined as Dissociative Identity Disorders (DIDs) in the DSM-5, is an intriguing and still debated disorder with a long history and deep cultural and epistemological implications, extending up to the idea of possession. Hypnosis is an appealing and valuable model to manipulate subjective experience and get an insight on both the physiology and the pathophysiology of the mind-brain functioning; it and has been closely connected with DIDs and possession since its origin in 18th century and as recently proved the capacity to yield a loss of sense of agency, mimicking delusions of alien control and spirit possession. In this study we report on five very uncommon "hypnotic virtuosos" (HVs) free from any psychiatric disorder, spontaneously undergoing the emergence of multiple identities during neutral hypnosis; this allowed us to check the relationship between their experience and fMRI data. During hypnosis the subjects underwent spontaneous non-intrusive experiences of other selves which were not recalled after the end of the session, due to post-hypnotic amnesia. The fMRI showed a significant decrease of connectivity in the Default Mode Network (DMN) especially between the posterior cingulate cortex and the medial prefrontal cortex. Our results and their contrast with the available data on fMRI in DIDs allows to draw the hypothesis of a continuum between healthy mind - where multiple identities may coexist at unconscious level and may sometimes emerge to the consciousness - and DIDs, where multiple personalities emerge as dissociated, ostensibly autonomous components yielding impaired functioning, subject's loss of control and suffering. If this is the case, it seems more reasonable to refrain from seeking for a clear-cut limit between normality (anyway a conventional, statistical concept) and pathology, and accept a grey area in between, where ostensibly odd but non-pathological experiences may occur (including so-called non-ordinary mental expressions) without calling for treatment but, rather, for being properly understood.
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Affiliation(s)
- Enrico Facco
- Studium Patavinum - Dept. of Neurosciences, University of Padua, Italy; Science of Consciousness Research Group, Dept. of General Psychology, University of Padua, Italy; Inst. F. Granone - Italian Center of Clinical and Experimental Hypnosis (CIICS), Turin, Italy.
| | - Laura Mendozzi
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, via Capecelatro 66, 20148 Milan, Italy
| | - Angelo Bona
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | - Achille Motta
- Department of Clinical Neurosciences, Villa San Benedetto Hospital, Hermanas Hospitalarias, Albese con Cassano, via Roma 16, Como, Italy
| | - Massimo Garegnani
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, via Capecelatro 66, 20148 Milan, Italy
| | - Isa Costantini
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, via Capecelatro 66, 20148 Milan, Italy; INRIA, Sophia-Antipolis, France
| | - Ottavia Dipasquale
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, via Capecelatro 66, 20148 Milan, Italy; Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience, King's College, London, United Kingdom
| | - Pietro Cecconi
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, via Capecelatro 66, 20148 Milan, Italy
| | - Roberta Menotti
- Department of Clinical Neurosciences, Villa San Benedetto Hospital, Hermanas Hospitalarias, Albese con Cassano, via Roma 16, Como, Italy
| | | | - Susanna Lipari
- IRCCS, Fondazione Don Carlo Gnocchi ONLUS, via Capecelatro 66, 20148 Milan, Italy
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Hiltunen S, Virta M, Kallio S, Paavilainen P. THE EFFECTS OF HYPNOSIS AND HYPNOTIC SUGGESTIONS ON THE MISMATCH NEGATIVITY IN HIGHLY HYPNOTIZABLE SUBJECTS. Int J Clin Exp Hypn 2019; 67:192-216. [PMID: 30939087 DOI: 10.1080/00207144.2019.1580966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The neural mechanisms associated with hypnosis were investigated in a group of 9 high hypnotizable subjects by measuring the mismatch negativity (MMN) component of the auditory event-related potential (ERP). ERPs were recorded using a passive oddball paradigm to sinusoidal standard and deviant tone stimuli of 500 and 520 Hz, respectively, in four conditions: prehypnosis, neutral hypnosis, hypnotic suggestion for altering the tone perception, and posthypnotic conditions. Earlier studies have indicated that hypnosis and hypnotic suggestions might have an effect on MMN, but the results of our study contradict these results: No statistically significant differences were found between the conditions in the MMN amplitudes.
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Affiliation(s)
- Seppo Hiltunen
- a Teaching and Learning Services, University Services , University of Helsinki , Finland.,b Department of Psychology and Logopedics, Faculty of Medicine , University of Helsinki , Finland
| | - Maarit Virta
- b Department of Psychology and Logopedics, Faculty of Medicine , University of Helsinki , Finland
| | - Sakari Kallio
- c Department of Cognitive Neuroscience and Philosophy, School of Bioscience , University of Skövde , Sweden.,d Centre for Cognitive Neuroscience , University of Turku , Finland
| | - Petri Paavilainen
- b Department of Psychology and Logopedics, Faculty of Medicine , University of Helsinki , Finland.,e Cognitive Brain Research Unit, Department of Psychology and Logopedics , University of Helsinki , Finland
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Facco E, Casiglia E, Al Khafaji BE, Finatti F, Duma GM, Mento G, Pederzoli L, Tressoldi P. THE NEUROPHENOMENOLOGY OF OUT-OF-BODY EXPERIENCES INDUCED BY HYPNOTIC SUGGESTIONS. Int J Clin Exp Hypn 2019; 67:39-68. [PMID: 30702402 DOI: 10.1080/00207144.2019.1553762] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Inducing out-of-body experiences in hypnosis (H-OBEs) offers an almost unique opportunity to investigate them under controlled conditions. OBEs were induced as an imaginative task in a resting condition (I-OBE) or in hypnosis (H-OBE) in a group of 15 high hypnotizable subjects. A 32-channel EEG was recorded, and the spectral power and imaginary coherence of each frequency band and each couple of electrodes were calculated. At the end of each session, the Phenomenology of Consciousness Inventory (PCI) was administered to assess the phenomenological aspects of the subjects' experience. Significantly higher scores in the altered state, positive affect altered experience, and attention subdimensions of the PCI were reported in H-OBE than in I-OBE, which were associated with a significant decrease of power in beta and gamma band activity in right parieto-temporal derivations. These results suggest that the H-OBE may offer a useful experimental model of spontaneous OBEs.
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Affiliation(s)
- Enrico Facco
- a University of Padua and Institute Franco Granone - Italian Center of Clinical and Experimental Hypnosis , Turin , Italy
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35
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Trujillo-Rodríguez D, Faymonville ME, Vanhaudenhuyse A, Demertzi A. Hypnosis for cingulate-mediated analgesia and disease treatment. HANDBOOK OF CLINICAL NEUROLOGY 2019; 166:327-339. [PMID: 31731920 DOI: 10.1016/b978-0-444-64196-0.00018-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Hypnosis is a technique that induces changes in perceptual experience through response to specific suggestions. By means of functional neuroimaging, a large body of clinical and experimental studies has shown that hypnotic processes modify internal (self-awareness) as well as external (environmental awareness) brain networks. Objective quantifications of this kind permit the characterization of cerebral changes after hypnotic induction and its uses in the clinical setting. Hypnosedation is one such application, as it combines hypnosis with local anesthesia in patients undergoing surgery. The power of this technique lies in the avoidance of general anesthesia and its potential complications that emerge during and after surgery. Hypnosedation is associated with improved intraoperative comfort and reduced perioperative anxiety and pain. It ensures a faster recovery of the patient and diminishes the intraoperative requirements for sedative or analgesic drugs. Mechanisms underlying the modulation of pain perception under hypnotic conditions involve cortical and subcortical areas, mainly the anterior cingulate and prefrontal cortices as well as the basal ganglia and thalami. In that respect, hypnosis-induced analgesia is an effective and highly cost-effective alternative to sedation during surgery and symptom management.
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Affiliation(s)
- D Trujillo-Rodríguez
- Physiology of Cognition Research Lab, GIGA-Consciousness, GIGA Institute B34, University of Liège, Liège, Belgium
| | - M-E Faymonville
- Algology Department, Liège University Hospital and Sensation and Perception Research Group, GIGA-Consciousness, University of Liège, Liège, Belgium.
| | - A Vanhaudenhuyse
- Algology Department, Liège University Hospital and Sensation and Perception Research Group, GIGA-Consciousness, University of Liège, Liège, Belgium
| | - A Demertzi
- Physiology of Cognition Research Lab, GIGA-Consciousness, GIGA Institute B34, University of Liège, Liège, Belgium; Fonds National de la Recherche Scientifique, Brussels, Belgium
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Li X, Chen L, Ma R, Wang H, Wan L, Wang Y, Bu J, Hong W, Lv W, Vollstädt-Klein S, Yang Y, Zhang X. The top-down regulation from the prefrontal cortex to insula via hypnotic aversion suggestions reduces smoking craving. Hum Brain Mapp 2018; 40:1718-1728. [PMID: 30467911 DOI: 10.1002/hbm.24483] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 10/21/2018] [Accepted: 10/25/2018] [Indexed: 12/20/2022] Open
Abstract
Hypnosis has been shown to have treatment effects on nicotine addiction. However, the neural basis of these effects is poorly understood. This preliminary study investigated the neural mechanisms of hypnosis-based treatment on cigarette smoking, specifically, whether the hypnosis involves a top-down or bottom-up mechanism. Two groups of 45 smokers underwent a smoking aversion suggestion and viewed smoking-related pictures and neutral pictures. One group underwent functional magnetic resonance imaging scanning twice (control and hypnotic states), whereas the other group underwent two electroencephalograph sessions. Our study found that self-reported smoking craving decreased in both groups following hypnosis. Smoking cue-elicited activations in the right dorsal lateral prefrontal cortex (rDLPFC) and left insula (lI) and the functional connectivity between the rDLPFC and lI were increased in the hypnotic state compared with the control state. The delta band source waveforms indicated the activation from 390 to 862 ms at the rDLPFC and from 490 to 900 ms at the lI was significantly different between the smoking and neutral conditions in the hypnotic state, suggesting the activation in the rDLPFC preceded that in the lI. These results suggest that the decreased smoking craving via hypnotic aversion suggestions may arise from the top-down regulation of the rDLPFC to the lI. Our findings provide novel neurobiological evidence for understanding the therapeutic effects of hypnosis on nicotine addiction, and the prefrontal-insula circuit may serve as an imaging biomarker to monitor the treatment efficacy noninvasively.
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Affiliation(s)
- Xiaoming Li
- Department of Medical Psychology, Chaohu Clinical Medical College, Anhui Medical University, Hefei, Anhui, China.,Hefei National Laboratory for Physical Sciences at the Microscale, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Lijun Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China.,CAS Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Ru Ma
- Hefei National Laboratory for Physical Sciences at the Microscale, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Haibao Wang
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Li Wan
- Hefei National Laboratory for Physical Sciences at the Microscale, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Ying Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Junjie Bu
- Hefei National Laboratory for Physical Sciences at the Microscale, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Wei Hong
- Hefei National Laboratory for Physical Sciences at the Microscale, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Wanwan Lv
- Hefei National Laboratory for Physical Sciences at the Microscale, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Sabine Vollstädt-Klein
- Department of Addictive Behavior and Addiction Medicine, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Yihong Yang
- Neuroimaging Research Branch, Intramural Research Program, National Institute on Drug Abuse, NIH, Baltimore, Maryland, USA
| | - Xiaochu Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China.,Academy of Psychology and Behavior, Tianjin Normal University, Tianjin, China.,Center for Biomedical Engineering, University of Science and Technology of China, Hefei, Anhui, China.,Anhui Mental Research Center on Alcohol Addiction, Anhui Mental Health Center, Hefei, China
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37
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Anlló H, Sackur J. Can hypnosis displace the threshold for visual consciousness? Neurosci Conscious 2018; 2018:niy009. [PMID: 30488004 PMCID: PMC6247368 DOI: 10.1093/nc/niy009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 09/21/2018] [Accepted: 09/24/2018] [Indexed: 11/20/2022] Open
Abstract
To test the specific effects of hypnosis on the attentional components of visual awareness, we developed a posthypnotic suggestion for peripheral visual inattention inspired on the "tunnel vision" symptom of the Balint Syndrome. We constructed a dual-target visibility and discrimination paradigm, in which single-digit numerical targets were placed both on the hypnotically affected peripheral space and on the remaining undisturbed central area. Results were 3-fold: (i) when compared to participants of Low hypnotic susceptibility (Lows), highly susceptible participants (Highs) presented decreased subjective visibility; (ii) Highs did not show dual-task interference from peripheral targets (an effect of unconscious processing) during hypnotic suggestion to not attend them, but Lows did; (iii) nevertheless, when asked to execute a discrimination task over these same targets, Highs performed with the same accuracy as Lows. These results suggest that the hypnotic manipulation of visuospatial attention did produce an experiential change in Highs, but not one that could be mapped onto interference at a single (conscious or unconscious) level of processing. Rather, we posit that Highs simultaneously displayed (i) a fluctuation in awareness of peripheral targets coherent with the suggestion and (ii) a control strategy that involved removing hypnotically unattended targets from the task set whenever task instructions would allow for it. In light of these findings, we argue that hypnosis cannot be used as a tool to restrict the processing of otherwise supraliminal stimulation to subliminal levels.
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Affiliation(s)
- Hernán Anlló
- Département d’Études Cognitives (École Normale Supérieure – PSL Research University), Laboratoire de Sciences Cognitives et Psycholinguistique (ENS, EHESS, CNRS), Paris, France
- Center for Interdisciplinary Research (CRI), Paris, France
| | - Jérôme Sackur
- Département d’Études Cognitives (École Normale Supérieure – PSL Research University), Laboratoire de Sciences Cognitives et Psycholinguistique (ENS, EHESS, CNRS), Paris, France
- École des Hautes Études en Sciences Sociales, Paris, France
- École Polytechnique, Palaiseau, France
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Koban L, Jepma M, Geuter S, Wager TD. What's in a word? How instructions, suggestions, and social information change pain and emotion. Neurosci Biobehav Rev 2018; 81:29-42. [PMID: 29173508 DOI: 10.1016/j.neubiorev.2017.02.014] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 02/06/2017] [Accepted: 02/14/2017] [Indexed: 01/10/2023]
Abstract
Instructions, suggestions, and other types of social information can have powerful effects on pain and emotion. Prominent examples include observational learning, social influence, placebo, and hypnosis. These different phenomena and their underlying brain mechanisms have been studied in partially separate literatures, which we discuss, compare, and integrate in this review. Converging findings from these literatures suggest that (1) instructions and social information affect brain systems associated with the generation of pain and emotion, and with reinforcement learning, and that (2) these changes are mediated by alterations in prefrontal systems responsible for top-down control and the generation of affective meaning. We argue that changes in expectation and appraisal, a process of assessing personal meaning and implications for wellbeing, are two potential key mediators of the effects of instructions and social information on affective experience. Finally, we propose a tentative model of how prefrontal regions, especially dorsolateral and ventromedial prefrontal cortex may regulate affective processing based on instructions and socially transmitted expectations more broadly.
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Affiliation(s)
- Leonie Koban
- Institute of Cognitive Science, University of Colorado Boulder, United States; Department of Psychology and Neuroscience, University of Colorado Boulder, United States.
| | - Marieke Jepma
- Cognitive Psychology Unit, Institute of Psychology, Leiden University, The Netherlands; Leiden Institute for Brain and Cognition, Leiden University, The Netherlands
| | - Stephan Geuter
- Institute of Cognitive Science, University of Colorado Boulder, United States; Department of Psychology and Neuroscience, University of Colorado Boulder, United States
| | - Tor D Wager
- Institute of Cognitive Science, University of Colorado Boulder, United States; Department of Psychology and Neuroscience, University of Colorado Boulder, United States
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Investigation on the Neural Mechanism of Hypnosis-Based Respiratory Control Using Functional MRI. CONTRAST MEDIA & MOLECULAR IMAGING 2018; 2018:8182542. [PMID: 30065621 PMCID: PMC6051291 DOI: 10.1155/2018/8182542] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 04/26/2018] [Accepted: 05/16/2018] [Indexed: 11/22/2022]
Abstract
Respiratory control is essential for treatment effect of radiotherapy due to the high dose, especially for thoracic-abdomen tumor, such as lung and liver tumors. As a noninvasive and comfortable way of respiratory control, hypnosis has been proven effective as a psychological technology in clinical therapy. In this study, the neural control mechanism of hypnosis for respiration was investigated by using functional magnetic resonance imaging (fMRI). Altered spontaneous brain activity as well as neural correlation of respiratory motion was detected for eight healthy subjects in normal state (NS) and hypnosis state (HS) guided by a hypnotist. Reduced respiratory amplitude was observed in HS (mean ± SD: 14.23 ± 3.40 mm in NS, 12.79 ± 2.49 mm in HS, p=0.0350), with mean amplitude deduction of 9.2%. Interstate difference of neural activity showed activations in the visual cortex and cerebellum, while deactivations in the prefrontal cortex and precuneus/posterior cingulate cortex (PCu/PCC) in HS. Within these regions, negative correlations of neural activity and respiratory motion were observed in visual cortex in HS. Moreover, in HS, voxel-wise neural correlations of respiratory amplitude demonstrated positive correlations in cerebellum anterior lobe and insula, while negative correlations were shown in the prefrontal cortex and sensorimotor area. These findings reveal the involvement of cognitive, executive control, and sensorimotor processing in the control mechanisms of hypnosis for respiration, and shed new light on hypnosis performance in interaction of psychology, physiology, and cognitive neuroscience.
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40
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Daltrozzo J, Valdez GE. ENHANCING IMPLICIT LEARNING WITH POSTHYPNOTIC SUGGESTION: An ERP Study. Int J Clin Exp Hypn 2018; 66:174-210. [PMID: 29601280 PMCID: PMC6130821 DOI: 10.1080/00207144.2018.1421358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Can posthypnotic suggestion (PHS) enhance cognitive abilities? The authors tested behaviorally and with event-related potentials (ERP) if sequential learning (SL), the ability to learn statistical regularities, can be enhanced with PHS. Thirty adults were assessed with the Stanford Hypnotic Susceptibility Scale (Form C) and an auditory SL task. Before this task, half the sample received a PHS to enhance SL, and the other half received the same suggestion under normal waking state. Response times and ERPs indicated a strong effect of PHS. Compared to the control group, PHS inverted, attenuated, or left unaffected the response time SL effect in low, medium, and high hypnotizability participants, respectively. These results suggest that PHS cannot be used to enhance SL.
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41
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Höfler C, Gremsl A, Schienle A. Nocebo and pseudo-neglect: Paradoxical effects detected with eye-tracking. Int J Psychophysiol 2018; 125:29-34. [PMID: 29410091 DOI: 10.1016/j.ijpsycho.2018.01.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 12/20/2017] [Accepted: 01/31/2018] [Indexed: 12/26/2022]
Abstract
The knowledge about effects of placebos and nocebos on specific visual attention processes is still very limited. In the present eye-tracking study, it was analyzed if a nocebo (sham transcranial magnetic stimulation) is able to elicit left-sided attentional deficits (pseudo-neglect). Fifty-two healthy participants performed a search task on the computer, once with and once without the nocebo. Indicators of left-biased search behavior (e.g. fixation count, reaction times for left vs. right-sided target detection) and affective state (e.g., valence, arousal) were assessed. The sample was divided into two groups (nocebo responder, non-responder) based on the experienced effectiveness of the nocebo. The nocebo treatment was associated with a positive and calm affective state. Contrary to the verbal suggestion, the nocebo increased the number of fixations and the dwell time on the left side of the computer screen. Moreover, the nocebo decreased the detection time for targets on the left side. These paradoxical nocebo effects were restricted to nocebo responders. Possible implications of nocebo-related compensatory behaviors for neuropsychological therapy are discussed.
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Affiliation(s)
- Carina Höfler
- Department of Psychology, Section Clinical Psychology, University of Graz, BioTechMedGraz, Universitätsplatz 2/III, 8010 Graz, Austria.
| | - Andreas Gremsl
- Department of Psychology, Section Clinical Psychology, University of Graz, BioTechMedGraz, Universitätsplatz 2/III, 8010 Graz, Austria.
| | - Anne Schienle
- Department of Psychology, Section Clinical Psychology, University of Graz, BioTechMedGraz, Universitätsplatz 2/III, 8010 Graz, Austria.
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Abraham A. The imaginative mind. Hum Brain Mapp 2018; 37:4197-4211. [PMID: 27453527 DOI: 10.1002/hbm.23300] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 05/31/2016] [Accepted: 06/20/2016] [Indexed: 01/04/2023] Open
Abstract
The astounding capacity for the human imagination to be engaged across a wide range of contexts is limitless and fundamental to our day-to-day experiences. Although processes of imagination are central to human psychological function, they rarely occupy center stage in academic discourse or empirical study within psychological and neuroscientific realms. The aim of this paper is to tackle this imbalance by drawing together the multitudinous facets of imagination within a common framework. The processes fall into one of five categories depending on whether they are characterized as involving perceptual/motor related mental imagery, intentionality or recollective processing, novel combinatorial or generative processing, exceptional phenomenology in the aesthetic response, or altered psychological states which range from commonplace to dysfunctional. These proposed categories are defined on the basis of theoretical ideas from philosophy as well as empirical evidence from neuroscience. By synthesizing the findings across these domains of imagination, this novel five-part or quinquepartite classification of the human imagination aids in systematizing, and thereby abets, our understanding of the workings and neural foundations of the human imagination. It would serve as a blueprint to direct further advances in the field of imagination while also promoting crosstalk with reference to stimulus-oriented facets of information processing. A biologically and ecologically valid psychology is one that seeks to explain fundamental aspects of human nature. Given the ubiquitous nature of the imaginative operations in our daily lives, there can be little doubt that these quintessential aspects of the mind should be central to the discussion. Hum Brain Mapp 37:4197-4211, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Anna Abraham
- School of Social Sciences, Leeds Beckett University, Leeds, LS1 3HE, United Kingdom.
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Oakley DA, Halligan PW. Chasing the Rainbow: The Non-conscious Nature of Being. Front Psychol 2017; 8:1924. [PMID: 29184516 PMCID: PMC5694471 DOI: 10.3389/fpsyg.2017.01924] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 10/17/2017] [Indexed: 01/31/2023] Open
Abstract
Despite the compelling subjective experience of executive self-control, we argue that “consciousness” contains no top-down control processes and that “consciousness” involves no executive, causal, or controlling relationship with any of the familiar psychological processes conventionally attributed to it. In our view, psychological processing and psychological products are not under the control of consciousness. In particular, we argue that all “contents of consciousness” are generated by and within non-conscious brain systems in the form of a continuous self-referential personal narrative that is not directed or influenced in any way by the “experience of consciousness.” This continuously updated personal narrative arises from selective “internal broadcasting” of outputs from non-conscious executive systems that have access to all forms of cognitive processing, sensory information, and motor control. The personal narrative provides information for storage in autobiographical memory and is underpinned by constructs of self and agency, also created in non-conscious systems. The experience of consciousness is a passive accompaniment to the non-conscious processes of internal broadcasting and the creation of the personal narrative. In this sense, personal awareness is analogous to the rainbow which accompanies physical processes in the atmosphere but exerts no influence over them. Though it is an end-product created by non-conscious executive systems, the personal narrative serves the powerful evolutionary function of enabling individuals to communicate (externally broadcast) the contents of internal broadcasting. This in turn allows recipients to generate potentially adaptive strategies, such as predicting the behavior of others and underlies the development of social and cultural structures, that promote species survival. Consequently, it is the capacity to communicate to others the contents of the personal narrative that confers an evolutionary advantage—not the experience of consciousness (personal awareness) itself.
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Affiliation(s)
- David A Oakley
- Division of Psychology and Language Sciences, University College London, London, United Kingdom.,School of Psychology, Cardiff University, Cardiff, United Kingdom
| | - Peter W Halligan
- School of Psychology, Cardiff University, Cardiff, United Kingdom
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Oscillatory brain mechanisms of the hypnotically-induced out-of-body experience. Cortex 2017; 96:19-30. [DOI: 10.1016/j.cortex.2017.08.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 06/11/2017] [Accepted: 08/22/2017] [Indexed: 01/22/2023]
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Landry M, Lifshitz M, Raz A. Brain correlates of hypnosis: A systematic review and meta-analytic exploration. Neurosci Biobehav Rev 2017; 81:75-98. [DOI: 10.1016/j.neubiorev.2017.02.020] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 01/31/2017] [Accepted: 02/20/2017] [Indexed: 10/20/2022]
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Hypnosis and top-down regulation of consciousness. Neurosci Biobehav Rev 2017; 81:59-74. [DOI: 10.1016/j.neubiorev.2017.02.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 02/02/2017] [Indexed: 12/20/2022]
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Delta coherence in resting-state EEG predicts the reduction in cigarette craving after hypnotic aversion suggestions. Sci Rep 2017; 7:2430. [PMID: 28546584 PMCID: PMC5445086 DOI: 10.1038/s41598-017-01373-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 03/27/2017] [Indexed: 12/26/2022] Open
Abstract
Cigarette craving is a key contributor of nicotine addiction. Hypnotic aversion suggestions have been used to help smoking cessation and reduce smoking relapse rates but its neural basis is poorly understood. This study investigated the underlying neural basis of hypnosis treatment for nicotine addiction with resting state Electroencephalograph (EEG) coherence as the measure. The sample consisted of 42 male smokers. Cigarette craving was measured by the Tobacco Craving Questionnaire. The 8-minute resting state EEG was recorded in baseline state and after hypnotic induction in the hypnotic state. Then a smoking disgust suggestion was performed. A significant increase in EEG coherence in delta and theta frequency, and significant decrease in alpha and beta frequency, between the baseline and the hypnotic state was found, which may reflect alterations in consciousness after hypnotic induction. More importantly, the delta coherence between the right frontal region and the left posterior region predicted cigarette craving reduction after hypnotic aversion suggestions. This suggests that the functional connectivity between these regions plays an important role in reducing cigarette cravings via hypnotic aversion suggestions. Thus, these brain regions may serve as an important target to treat nicotine addiction, such as stimulating these brain regions via repetitive transcranial magnetic stimulation.
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Jensen MP, Jamieson GA, Lutz A, Mazzoni G, McGeown WJ, Santarcangelo EL, Demertzi A, De Pascalis V, Bányai ÉI, Rominger C, Vuilleumier P, Faymonville ME, Terhune DB. New directions in hypnosis research: strategies for advancing the cognitive and clinical neuroscience of hypnosis. Neurosci Conscious 2017; 3:nix004. [PMID: 29034102 PMCID: PMC5635845 DOI: 10.1093/nc/nix004] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/24/2017] [Accepted: 03/01/2017] [Indexed: 12/22/2022] Open
Abstract
This article summarizes key advances in hypnosis research during the past two decades, including (i) clinical research supporting the efficacy of hypnosis for managing a number of clinical symptoms and conditions, (ii) research supporting the role of various divisions in the anterior cingulate and prefrontal cortices in hypnotic responding, and (iii) an emerging finding that high hypnotic suggestibility is associated with atypical brain connectivity profiles. Key recommendations for a research agenda for the next decade include the recommendations that (i) laboratory hypnosis researchers should strongly consider how they assess hypnotic suggestibility in their studies, (ii) inclusion of study participants who score in the middle range of hypnotic suggestibility, and (iii) use of expanding research designs that more clearly delineate the roles of inductions and specific suggestions. Finally, we make two specific suggestions for helping to move the field forward including (i) the use of data sharing and (ii) redirecting resources away from contrasting state and nonstate positions toward studying (a) the efficacy of hypnotic treatments for clinical conditions influenced by central nervous system processes and (b) the neurophysiological underpinnings of hypnotic phenomena. As we learn more about the neurophysiological mechanisms underlying hypnosis and suggestion, we will strengthen our knowledge of both basic brain functions and a host of different psychological functions.
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Affiliation(s)
- Mark P Jensen
- Department of Rehabilitation Medicine, University of Washington, Seattle, WA 98104, USA
| | - Graham A Jamieson
- School of Behavioural, Cognitive, and Social Sciences, University of New England, Armidale, Australia
| | | | | | - William J McGeown
- School of Psychological Sciences and Health, University of Strathclyde, UK
| | - Enrica L Santarcangelo
- Department of Translational Research and New Technologies, University of Pisa, Pisa, Italy
| | - Athena Demertzi
- Institut du Cerveau et de la Moelle épinière (ICM), Hôpital Pitié-Salpêtrière, Paris, France and Coma Science Group, GIGA Research, University and University hospital of Liège, Belgium
| | | | - Éva I Bányai
- Department of Psychology, University of Budapest, Budapest, Hungary
| | | | - Patrik Vuilleumier
- Department of Neuroscience, Laboratory for Behavioral Neurology and Imaging of Cognition, University of Geneva, Geneva, Switzerland
| | | | - Devin B Terhune
- Department of Psychology, Goldsmiths, University of London, London, UK
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Sleep-Related Interventions to Improve Psychotherapy. COGNITIVE NEUROSCIENCE OF MEMORY CONSOLIDATION 2017. [DOI: 10.1007/978-3-319-45066-7_23] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Zhang Y, Wang Y, Shen C, Ye Y, Shen S, Zhang B, Wang J, Chen W, Wang W. Relationship between hypnosis and personality trait in participants with high or low hypnotic susceptibility. Neuropsychiatr Dis Treat 2017; 13:1007-1012. [PMID: 28435270 PMCID: PMC5388343 DOI: 10.2147/ndt.s134930] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND The relationship between normal personality and hypnotic susceptibility is important for understanding mental processing and mental disorders, but it is less consistent in normal people or in patients with a psychiatric disorder. We have hypothesized that the correlation exists but varies in individuals with different levels of hypnotizability. PARTICIPANTS AND METHODS We invited 72 individuals with high (HIGH group) and 47 individuals with low (LOW group) hypnotic susceptibilities to undertake tests of NEO-PI-R and the Stanford Hypnotic Susceptibility Scale, Form C (SHSSC). RESULTS The HIGH group scored significantly higher than the LOW group did on openness to experience and its facet openness to feelings. In the LOW group, SHSSC total was positively predicted by openness to ideas; age regression was positively predicted by openness to experience and negatively predicted by extraversion; anosmia to ammonia was negatively predicted by agreeableness; and negative visual hallucination was positively predicted by openness to experience. In the HIGH group, hallucinated voice was positively predicted by openness to experience and negatively predicted by agreeableness, and posthypnotic amnesia was positively predicted by extraversion and negatively predicted by openness to experience. CONCLUSION The associations between normal personality traits and hypnotic susceptibility items were weak and different in the two groups, which imply that managing mental or somatoform disorders might be through adjusting hypnotizability and mobilizing personality functions.
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Affiliation(s)
- Yingchun Zhang
- Department of Clinical Psychology and Psychiatry, School of Public Health.,Department of Mental Health, Sir Run Run Shaw Hospital, Zhejiang University College of Medicine, Hangzhou, People's Republic of China
| | - Yunke Wang
- Department of Clinical Psychology and Psychiatry, School of Public Health
| | - Chanchan Shen
- Department of Clinical Psychology and Psychiatry, School of Public Health.,Department of Mental Health, Sir Run Run Shaw Hospital, Zhejiang University College of Medicine, Hangzhou, People's Republic of China
| | - Yingying Ye
- Department of Clinical Psychology and Psychiatry, School of Public Health
| | - Si Shen
- Department of Clinical Psychology and Psychiatry, School of Public Health
| | - Bingren Zhang
- Department of Clinical Psychology and Psychiatry, School of Public Health.,Department of Mental Health, Sir Run Run Shaw Hospital, Zhejiang University College of Medicine, Hangzhou, People's Republic of China
| | - Jiawei Wang
- Department of Clinical Psychology and Psychiatry, School of Public Health.,Department of Mental Health, Sir Run Run Shaw Hospital, Zhejiang University College of Medicine, Hangzhou, People's Republic of China
| | - Wei Chen
- Department of Mental Health, Sir Run Run Shaw Hospital, Zhejiang University College of Medicine, Hangzhou, People's Republic of China
| | - Wei Wang
- Department of Clinical Psychology and Psychiatry, School of Public Health.,Department of Mental Health, Sir Run Run Shaw Hospital, Zhejiang University College of Medicine, Hangzhou, People's Republic of China
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