1
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Knights E, McIntosh RD, Ford C, Buckingham G, Rossit S. Peripheral and bimanual reaching in a stroke survivor with left visual neglect and extinction. Neuropsychologia 2024; 201:108901. [PMID: 38704116 DOI: 10.1016/j.neuropsychologia.2024.108901] [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: 07/31/2023] [Revised: 04/23/2024] [Accepted: 05/01/2024] [Indexed: 05/06/2024]
Abstract
Whether attentional deficits are accompanied by visuomotor impairments following posterior parietal lesions has been debated for quite some time. This single-case study investigated reaching in a stroke survivor (E.B.) with left visual neglect and visual extinction following right temporo-parietal-frontal strokes. Unlike most neglect patients, E.B. did not present left hemiparesis, homonymous hemianopia nor show evidence of motor neglect or extinction allowing us to examine, for the first time, if lateralised attentional deficits co-occur with deficits in peripheral and bimanual reaching. First, we found a classic optic ataxia field effect: E.B.'s accuracy was impaired when reaching to peripheral targets in her neglected left visual field (regardless of the hand used). Second, we found a larger bimanual cost for movement time in E.B. than controls when both hands reached to incongruent locations. E.B.'s visuomotor profile is similar to the one of patients with optic ataxia showing that attentional deficits are accompanied by visuomotor deficits in the affected field.
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Affiliation(s)
- Ethan Knights
- Neuropsychology Laboratory, School of Psychology, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| | - Robert D McIntosh
- Human Cognitive Neuroscience, Department of Psychology, The University of Edinburgh, EH8 9JZ, United Kingdom
| | - Catherine Ford
- Department of Clinical Psychology and Psychological Therapies, Norwich Medical School, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| | - Gavin Buckingham
- Department of Sport and Health Sciences, University of Exeter, Exeter, United Kingdom
| | - Stéphanie Rossit
- Neuropsychology Laboratory, School of Psychology, University of East Anglia, Norwich, NR4 7TJ, United Kingdom.
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2
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Khateeb K, Bloch J, Zhou J, Rahimi M, Griggs DJ, Kharazia VN, Le MN, Wang RK, Yazdan-Shahmorad A. A versatile toolbox for studying cortical physiology in primates. CELL REPORTS METHODS 2022; 2:100183. [PMID: 35445205 PMCID: PMC9017216 DOI: 10.1016/j.crmeth.2022.100183] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/06/2022] [Accepted: 02/23/2022] [Indexed: 12/02/2022]
Abstract
Lesioning and neurophysiological studies have facilitated the elucidation of cortical functions and mechanisms of functional recovery following injury. Clinical translation of such studies is contingent on their employment in non-human primates (NHPs), yet tools for monitoring and modulating cortical physiology are incompatible with conventional lesioning techniques. To address these challenges, we developed a toolbox validated in seven macaques. We introduce the photothrombotic method for inducing focal cortical lesions, a quantitative model for designing experiment-specific lesion profiles and optical coherence tomography angiography (OCTA) for large-scale (~5 cm2) monitoring of vascular dynamics. We integrate these tools with our electrocorticographic array for large-scale monitoring of neural dynamics and testing stimulation-based interventions. Advantageously, this versatile toolbox can be incorporated into established chronic cranial windows. By combining optical and electrophysiological techniques in the NHP cortex, we can enhance our understanding of cortical functions, investigate functional recovery mechanisms, integrate physiological and behavioral findings, and develop neurorehabilitative treatments. MOTIVATION The primate neocortex encodes for complex functions and behaviors, the physiologies of which are yet to be fully understood. Such an understanding in both healthy and diseased states can be crucial for the development of effective neurorehabilitative strategies. However, there is a lack of a comprehensive and adaptable set of tools that enables the study of multiple physiological phenomena in healthy and injured brains. Therefore, we developed a toolbox with the capability to induce targeted cortical lesions, monitor dynamics of underlying cortical microvasculature, and record and stimulate neural activity. With this toolbox, we can enhance our understanding of cortical functions, investigate functional recovery mechanisms, test stimulation-based interventions, and integrate physiological and behavioral findings.
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Affiliation(s)
- Karam Khateeb
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
- Washington National Primate Research Center, Seattle, WA 98195, USA
| | - Julien Bloch
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
- Washington National Primate Research Center, Seattle, WA 98195, USA
| | - Jasmine Zhou
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
- Washington National Primate Research Center, Seattle, WA 98195, USA
| | - Mona Rahimi
- Washington National Primate Research Center, Seattle, WA 98195, USA
- Department of Electrical and Computer Engineering, University of Washington, Seattle, WA 98195, USA
| | - Devon J. Griggs
- Washington National Primate Research Center, Seattle, WA 98195, USA
- Department of Electrical and Computer Engineering, University of Washington, Seattle, WA 98195, USA
| | - Viktor N. Kharazia
- Department of Physiology and Center for Integrative Neuroscience, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Minh N. Le
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Ruikang K. Wang
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
- Department of Ophthalmology, University of Washington Medicine, Seattle, WA 98195, USA
| | - Azadeh Yazdan-Shahmorad
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
- Washington National Primate Research Center, Seattle, WA 98195, USA
- Department of Electrical and Computer Engineering, University of Washington, Seattle, WA 98195, USA
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3
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Del Vecchio M, Fossataro C, Zauli FM, Sartori I, Pigorini A, d'Orio P, Abarrategui B, Russo S, Mikulan EP, Caruana F, Rizzolatti G, Garbarini F, Avanzini P. Tonic somatosensory responses and deficits of tactile awareness converge in the parietal operculum. Brain 2021; 144:3779-3787. [PMID: 34633436 PMCID: PMC8719842 DOI: 10.1093/brain/awab384] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/13/2021] [Accepted: 09/18/2021] [Indexed: 01/02/2023] Open
Abstract
Although clinical neuroscience and the neuroscience of consciousness have long sought mechanistic explanations of tactile-awareness disorders, mechanistic insights are rare, mainly because of the difficulty of depicting the fine-grained neural dynamics underlying somatosensory processes. Here, we combined the stereo-EEG responses to somatosensory stimulation with the lesion mapping of patients with a tactile-awareness disorder, namely tactile extinction. Whereas stereo-EEG responses present different temporal patterns, including early/phasic and long-lasting/tonic activities, tactile-extinction lesion mapping co-localizes only with the latter. Overlaps are limited to the posterior part of the perisylvian regions, suggesting that tonic activities may play a role in sustaining tactile awareness. To assess this hypothesis further, we correlated the prevalence of tonic responses with the tactile-extinction lesion mapping, showing that they follow the same topographical gradient. Finally, in parallel with the notion that visuotactile stimulation improves detection in tactile-extinction patients, we demonstrated an enhancement of tonic responses to visuotactile stimuli, with a strong voxel-wise correlation with the lesion mapping. The combination of these results establishes tonic responses in the parietal operculum as the ideal neural correlate of tactile awareness.
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Affiliation(s)
- Maria Del Vecchio
- Istituto di Neuroscienze, Consiglio Nazionale delle Ricerche, 43125 Parma, Italy
| | - Carlotta Fossataro
- MANIBUS Laboratory, Department of Psychology, University of Turin, 10124 Turin, Italy
| | - Flavia Maria Zauli
- Dipartimento di Scienze Biomediche e Cliniche 'L. Sacco,' Università degli Studi di Milano, 20157 Milano, Italy
| | - Ivana Sartori
- Centro per la Chirurgia dell'Epilessia 'Claudio Munari,' Ospedale Ca' Granda-Niguarda, 20162 Milano, Italy
| | - Andrea Pigorini
- Dipartimento di Scienze Biomediche e Cliniche 'L. Sacco,' Università degli Studi di Milano, 20157 Milano, Italy
| | - Piergiorgio d'Orio
- Istituto di Neuroscienze, Consiglio Nazionale delle Ricerche, 43125 Parma, Italy.,Centro per la Chirurgia dell'Epilessia 'Claudio Munari,' Ospedale Ca' Granda-Niguarda, 20162 Milano, Italy
| | - Belen Abarrategui
- Dipartimento di Scienze Biomediche e Cliniche 'L. Sacco,' Università degli Studi di Milano, 20157 Milano, Italy
| | - Simone Russo
- Dipartimento di Scienze Biomediche e Cliniche 'L. Sacco,' Università degli Studi di Milano, 20157 Milano, Italy
| | - Ezequiel Pablo Mikulan
- Dipartimento di Scienze Biomediche e Cliniche 'L. Sacco,' Università degli Studi di Milano, 20157 Milano, Italy
| | - Fausto Caruana
- Istituto di Neuroscienze, Consiglio Nazionale delle Ricerche, 43125 Parma, Italy
| | - Giacomo Rizzolatti
- Istituto di Neuroscienze, Consiglio Nazionale delle Ricerche, 43125 Parma, Italy.,Dipartimento di Medicina e Chirurgia, Università degli Studi di Parma, 43125 Parma, Italy
| | - Francesca Garbarini
- MANIBUS Laboratory, Department of Psychology, University of Turin, 10124 Turin, Italy.,Neuroscience Institute of Turin (NIT), 10124 Turin, Italy
| | - Pietro Avanzini
- Istituto di Neuroscienze, Consiglio Nazionale delle Ricerche, 43125 Parma, Italy
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4
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Rossi Sebastiano A, Bruno V, Ronga I, Fossataro C, Galigani M, Neppi-Modona M, Garbarini F. Diametrical modulation of tactile and visual perceptual thresholds during the rubber hand illusion: a predictive coding account. PSYCHOLOGICAL RESEARCH 2021; 86:1830-1846. [PMID: 34773491 DOI: 10.1007/s00426-021-01608-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 10/06/2021] [Indexed: 11/29/2022]
Abstract
During the rubber hand illusion (RHI), the synchronous stroking of the participants' concealed hand and a visible rubber hand induces a conflict among visuo-tactile inputs, leading healthy subjects to perceive the illusion of being touched on the rubber hand, as if it were part of their body. The predictive coding theory suggests that the RHI emerges to settle the conflict, attenuating somatosensory inputs in favour of visual ones, which "capture" tactile sensations. Here, we employed the psychophysical measure of perceptual threshold to measure a behavioural correlate of the somatosensory and visual modulations, to better understand the mechanisms underpinning the illusion. Before and after the RHI, participants underwent a tactile (Experiment 1) and a visual (Experiment 2) task, wherein they had to detect stimuli slightly above the perceptual threshold. According to the predictive coding framework, we found a significant decrease of tactile detection (i.e. increased tactile perceptual threshold) and a significant increase of visual detection (i.e. decreased visual perceptual threshold), suggesting a diametrical modulation of somatosensory and visual perceptual processes. These findings provide evidence of how our system plastically adapts to uncertainty, attributing different weights to sensory inputs to restore a coherent representation of the own body.
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Affiliation(s)
- Alice Rossi Sebastiano
- MANIBUS Lab, Department of Psychology, University of Turin, Via Verdi 10, 10124, Turin, Italy
| | - Valentina Bruno
- MANIBUS Lab, Department of Psychology, University of Turin, Via Verdi 10, 10124, Turin, Italy
| | - Irene Ronga
- MANIBUS Lab, Department of Psychology, University of Turin, Via Verdi 10, 10124, Turin, Italy
| | - Carlotta Fossataro
- MANIBUS Lab, Department of Psychology, University of Turin, Via Verdi 10, 10124, Turin, Italy
| | - Mattia Galigani
- MANIBUS Lab, Department of Psychology, University of Turin, Via Verdi 10, 10124, Turin, Italy
| | - Marco Neppi-Modona
- MANIBUS Lab, Department of Psychology, University of Turin, Via Verdi 10, 10124, Turin, Italy
| | - Francesca Garbarini
- MANIBUS Lab, Department of Psychology, University of Turin, Via Verdi 10, 10124, Turin, Italy. .,NIT, Neuroscience Institute of Turin, Turin, Italy.
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5
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Salvato G, Peviani V, Scarpa P, Francione S, Castana L, Gallace A, Bricolo E, Vallar G, Bottini G. Investigating visuo-spatial neglect and visual extinction during intracranial electrical stimulations: The role of the right inferior parietal cortex. Neuropsychologia 2021; 162:108049. [PMID: 34624258 DOI: 10.1016/j.neuropsychologia.2021.108049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 08/09/2021] [Accepted: 10/04/2021] [Indexed: 11/28/2022]
Abstract
Both visuo-spatial neglect and visual extinction may occur following right-brain damage. So far, studies on brain-damaged patients have not provided definite evidence about which lesion patterns may lead to the association or dissociation of these deficits. This study was set out to address this issue using Intracranial Electrical Stimulation (IES) in a group of nine patients affected by refractory epilepsy. Cerebral regions associated with visuo-spatial neglect and visual extinction were stimulated, including the right frontal, temporal, and posterior parietal areas. During IES, patients with intracranial implantation involving at least one of these cortical regions were administered with a manual line bisection task (N = 9) to assess visuo-spatial neglect, and a computerized task (N = 8) assessing visual extinction. Results showed that parietal IES induced a rightward bias at the manual bisection task, together with a general improvement in reaction times at bilateral and unilateral visual stimuli detection at the extinction task. The occurrence of visual extinction did not vary across stimulations. By adopting a complementary approach to anatomo-clinical correlation studies, our work corroborates the notion that lesions to the right inferior parietal lobule play a pivotal role in the pathogenesis of visuo-spatial neglect. Importantly, our results also suggest that temporarily interfering with the activity of this region is not sufficient per se to generate visual extinction, which instead may involve a broader and/or different network, possibly extending beyond the cerebral regions considered here, posing important theoretical and clinical implications.
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Affiliation(s)
- Gerardo Salvato
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy; Centre of Cognitive Neuropsychology, ASST "Grande Ospedale Metropolitano", Niguarda Hospital, Milano, Italy; NeuroMI, Milan Center for Neuroscience, Milano, Italy
| | - Valeria Peviani
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy; Department of Neuroscience, Max Planck Institute for Empirical Aesthetics, Frankfurt Am Main, Germany
| | - Pina Scarpa
- Centre of Cognitive Neuropsychology, ASST "Grande Ospedale Metropolitano", Niguarda Hospital, Milano, Italy; NeuroMI, Milan Center for Neuroscience, Milano, Italy
| | - Stefano Francione
- "Claudio Munari" Center for Epilepsy Surgery, ASST "Grande Ospedale Metropolitano", Niguarda Hospital, Milano, Italy
| | - Laura Castana
- "Claudio Munari" Center for Epilepsy Surgery, ASST "Grande Ospedale Metropolitano", Niguarda Hospital, Milano, Italy
| | - Alberto Gallace
- NeuroMI, Milan Center for Neuroscience, Milano, Italy; Department of Psychology, University of Milano-Bicocca, Milano, Italy
| | - Emanuela Bricolo
- NeuroMI, Milan Center for Neuroscience, Milano, Italy; Department of Psychology, University of Milano-Bicocca, Milano, Italy
| | - Giuseppe Vallar
- NeuroMI, Milan Center for Neuroscience, Milano, Italy; Department of Psychology, University of Milano-Bicocca, Milano, Italy; Neuropsychological Laboratory, IRCCS Istituto Auxologico Italiano, Italy
| | - Gabriella Bottini
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy; Centre of Cognitive Neuropsychology, ASST "Grande Ospedale Metropolitano", Niguarda Hospital, Milano, Italy; NeuroMI, Milan Center for Neuroscience, Milano, Italy.
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6
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Garbarini F, Fossataro C, Pia L, Berti A. What pathological embodiment/disembodiment tell us about body representations. Neuropsychologia 2020; 149:107666. [DOI: 10.1016/j.neuropsychologia.2020.107666] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 08/11/2020] [Accepted: 10/24/2020] [Indexed: 11/16/2022]
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7
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Beume LA, Rijntjes M, Dressing A, Kaller CP, Hieber M, Martin M, Kirsch S, Kümmerer D, Urbach H, Umarova RM, Weiller C. Dissociation of visual extinction and neglect in the left hemisphere. Cortex 2020; 129:211-222. [PMID: 32505793 DOI: 10.1016/j.cortex.2020.04.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 04/05/2020] [Accepted: 04/06/2020] [Indexed: 11/27/2022]
Abstract
Visual neglect and extinction are two distinct visuospatial attention deficits that frequently occur after right hemisphere cerebral stroke. However, their different lesion profiles remain a matter of debate. In the left hemisphere, a domain-general dual-loop model with distinct computational abilities onto which several cognitive functions may project, has been proposed: a dorsal stream for sensori-motor mapping in time and space and a ventral stream for comprehension and representation of concepts. We wondered whether such a distinction may apply to visual extinction and neglect in left hemisphere lesions. Of 165 prospectively studied patients with acute left hemispheric ischemic stroke with a single lesion on MRI, 122 had no visuospatial attention deficit, 10 had extinction, 31 neglect and 2 had both, visual extinction and neglect. Voxel-based-lesion-symptom mapping (VLSM, FDR<.05) showed a clear anatomical dissociation. Extinction occurred after damage to the parietal cortex (anterior bank of the intraparietal sulcus, inferior parietal lobe, and supramarginal gyrus), while visual neglect occurred after damage mainly to the temporal lobe (superior and middle temporal lobe, anterior temporal pole), inferior ventral premotor cortex, frontal operculum, angular gyrus, and insula. Direct comparison of both conditions linked extinction to intraparietal sulcus and supramarginal gyrus (FDR<.05). Thus, in the left hemisphere extinction seems to be related to dorsal stream lesions, whereas neglect maps more on the ventral stream. These data cannot be generalized to the right hemisphere. However, a domain-general point-of-view may stimulate discussion on visuospatial attention processing also in the right hemisphere.
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Affiliation(s)
- Lena-Alexandra Beume
- Department of Neurology and Neuroscience, University Medical Center Freiburg, Freiburg, Germany; Freiburg Brain Imaging Center, University Medical Center Freiburg, Freiburg, Germany; BrainLinks-BrainTools Cluster of Excellence, University Medical Center Freiburg, Freiburg, Germany
| | - Michel Rijntjes
- Department of Neurology and Neuroscience, University Medical Center Freiburg, Freiburg, Germany; Freiburg Brain Imaging Center, University Medical Center Freiburg, Freiburg, Germany; BrainLinks-BrainTools Cluster of Excellence, University Medical Center Freiburg, Freiburg, Germany
| | - Andrea Dressing
- Department of Neurology and Neuroscience, University Medical Center Freiburg, Freiburg, Germany; Freiburg Brain Imaging Center, University Medical Center Freiburg, Freiburg, Germany; BrainLinks-BrainTools Cluster of Excellence, University Medical Center Freiburg, Freiburg, Germany
| | - Christoph P Kaller
- Department of Neurology and Neuroscience, University Medical Center Freiburg, Freiburg, Germany; Freiburg Brain Imaging Center, University Medical Center Freiburg, Freiburg, Germany; BrainLinks-BrainTools Cluster of Excellence, University Medical Center Freiburg, Freiburg, Germany
| | - Maren Hieber
- Department of Neurology and Neuroscience, University Medical Center Freiburg, Freiburg, Germany; Freiburg Brain Imaging Center, University Medical Center Freiburg, Freiburg, Germany; BrainLinks-BrainTools Cluster of Excellence, University Medical Center Freiburg, Freiburg, Germany
| | - Markus Martin
- Department of Neurology and Neuroscience, University Medical Center Freiburg, Freiburg, Germany; Freiburg Brain Imaging Center, University Medical Center Freiburg, Freiburg, Germany; BrainLinks-BrainTools Cluster of Excellence, University Medical Center Freiburg, Freiburg, Germany
| | - Simon Kirsch
- Department of Neurology and Neuroscience, University Medical Center Freiburg, Freiburg, Germany; Freiburg Brain Imaging Center, University Medical Center Freiburg, Freiburg, Germany
| | - Dorothee Kümmerer
- Department of Neurology and Neuroscience, University Medical Center Freiburg, Freiburg, Germany; Freiburg Brain Imaging Center, University Medical Center Freiburg, Freiburg, Germany; BrainLinks-BrainTools Cluster of Excellence, University Medical Center Freiburg, Freiburg, Germany
| | - Horst Urbach
- Freiburg Brain Imaging Center, University Medical Center Freiburg, Freiburg, Germany; Department of Neuroradiology, University Medical Center Freiburg, Freiburg, Germany
| | - Roza M Umarova
- Department of Neurology and Neuroscience, University Medical Center Freiburg, Freiburg, Germany; Freiburg Brain Imaging Center, University Medical Center Freiburg, Freiburg, Germany; BrainLinks-BrainTools Cluster of Excellence, University Medical Center Freiburg, Freiburg, Germany; Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Cornelius Weiller
- Department of Neurology and Neuroscience, University Medical Center Freiburg, Freiburg, Germany; Freiburg Brain Imaging Center, University Medical Center Freiburg, Freiburg, Germany; BrainLinks-BrainTools Cluster of Excellence, University Medical Center Freiburg, Freiburg, Germany.
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8
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Fossataro C, Bruno V, Bosso E, Chiotti V, Gindri P, Farnè A, Garbarini F. The sense of body-ownership gates cross-modal improvement of tactile extinction in brain-damaged patients. Cortex 2020; 127:94-107. [DOI: 10.1016/j.cortex.2020.02.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 01/17/2020] [Accepted: 02/06/2020] [Indexed: 12/11/2022]
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9
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Tamura M, Shirakawa M, Luo ZW, Noda K, Tanemura R. Qualitative assessment for extrapersonal neglect in patients with stroke using a virtual reality system task. COGENT MEDICINE 2019. [DOI: 10.1080/2331205x.2019.1687272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Affiliation(s)
- Masaki Tamura
- Graduate School of Health Sciences, Kobe University, Kobe, Hyogo 654-0142, Japan
- Department of Physical Therapy, Asahi College of Medical and Health Professionals, Okayama, Okayama 700-0026, Japan
| | - Makoto Shirakawa
- Graduate School of System Informatics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Zhi-wei Luo
- Graduate School of System Informatics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Kazue Noda
- Graduate School of Health Sciences, Kobe University, Kobe, Hyogo 654-0142, Japan
| | - Rumi Tanemura
- Graduate School of Health Sciences, Kobe University, Kobe, Hyogo 654-0142, Japan
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10
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Ricci R, Salatino A, Caldano M, Perozzo P, Cerrato P, Pyasik M, Pia L, Berti A. Phantom touch: How to unmask sensory unawareness after stroke. Cortex 2019; 121:253-263. [DOI: 10.1016/j.cortex.2019.08.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 06/16/2019] [Accepted: 08/27/2019] [Indexed: 11/15/2022]
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11
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Facchin A, Vallar G, Daini R. The Brentano Illusion Test (BRIT): An implicit task of perceptual processing for the assessment of visual field defects in neglect patients. Neuropsychol Rehabil 2019; 31:39-56. [PMID: 31438751 DOI: 10.1080/09602011.2019.1655067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
In brain damaged patients with unilateral spatial neglect (USN), the differential diagnosis between the presence and absence of a unilateral visual half-field deficit (VHFD) is hampered by the similarity of their phenomenology. The absence of stimuli detection in the contralateral visual field, indeed, can be due to the co-occurrence of USN and VHFD or the sole presence of the USN. The disentangling of the two conditions is required to devise more specific rehabilitation programmes. Daini et al. [2002. Exploring the syndrome of spatial unilateral neglect through an illusion of length. Experimental Brain Research, 144(2), 224-237.] reported a difference in performance for the two conditions when the tasks required the bisection of Brentano illusory stimuli. Only when USN and VHFD co-occurred, the leftward illusory effect was disrupted. Based on previous findings, in this cross-sectional study, we developed the Brentano Illusion Test (BRIT), a clinical tool that helps the identification of VHFD in USN patients. The BRIT is a simple behavioural test of line bisection aimed at verifying the presence or absence of implicit processing in USN and thus helping the diagnosis of VHFD in USN patients; it also provides normative data for the line bisection task and the length effect.
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Affiliation(s)
- Alessio Facchin
- Department of Psychology, Milan Centre for Neuroscience (NeuroMI), University of Milano-Bicocca, Milano, Italy.,University Research Centre in Optics and Optometry, University of Milano-Bicocca (COMiB), Milano, Italy.,Institute of Research and Studies in Optics and Optometry, Vinci, Italy
| | - Giuseppe Vallar
- Department of Psychology, Milan Centre for Neuroscience (NeuroMI), University of Milano-Bicocca, Milano, Italy.,Neuropsychological Laboratory, IRCCS Istituto Auxologico Italiano, Milano, Italy
| | - Roberta Daini
- Department of Psychology, Milan Centre for Neuroscience (NeuroMI), University of Milano-Bicocca, Milano, Italy.,University Research Centre in Optics and Optometry, University of Milano-Bicocca (COMiB), Milano, Italy
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12
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Verfaille C, Filbrich L, Cordova Bulens D, Lefèvre P, Berquin A, Barbier O, Libouton X, Fraselle V, Mouraux D, Legrain V. Robot-assisted line bisection in patients with Complex Regional Pain Syndrome. PLoS One 2019; 14:e0213732. [PMID: 31048861 PMCID: PMC6497371 DOI: 10.1371/journal.pone.0213732] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 02/27/2019] [Indexed: 11/18/2022] Open
Abstract
Complex Regional Pain Syndrome (CRPS) is characterized by pain, motor and inflammatory symptoms usually affecting one limb. Cognitive difficulties have been reported to affect patients’ ability to represent, perceive and use their affected limb. It is debated whether these difficulties result from deficits in controlling goal-directed movements in space or from a learned strategy to protect the affected limb. In order to dissociate the two hypotheses, patients with upper-limb CRPS were asked to move with their unaffected hand towards visual targets projected at different positions on a horizontal semi-reflexive mirror. By means of a robotic handle placed below the screen, they were asked to move a cursor, to reach and cross lines at their estimated midpoint. In some of the stimulation series, the affected hand was placed below the mirror so that some lines appeared projected onto that hand. Vision of the hands and the robotic handle was preserved or prevented by opening or closing a shutter below the mirror. Lines were displayed on the mirror according to which part of the body was affected (ispi- vs. contralateral) and the actual position of the affected hand (inside vs. outside the workspace). Comparatively to control participants, CRPS patients generally biased their estimation by bisecting the lines towards their left side, irrelative of which part of the body was affected and the position of the affected hand, both in ipsi- and contralateral space, with only a few exceptions. Our results are in line with previous studies having described a visuospatial deficit in CRPS patients and discard the explanation of observed symptoms in terms of learned nonuse strategies, as only the unaffected hand was used to perform the task. It is suggested that CRPS patients can display difficulties to perform tasks requesting visuo-motor coordination, reflecting the complex cortical reorganization occurring in CRPS.
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Affiliation(s)
- Charlotte Verfaille
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
- * E-mail:
| | - Lieve Filbrich
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
- Psychological Sciences Research Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - David Cordova Bulens
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics, Louvain-la-Neuve, Belgium
| | - Philippe Lefèvre
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics, Louvain-la-Neuve, Belgium
| | - Anne Berquin
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
- Saint-Luc University Hospital, Brussels, Belgium
| | - Olivier Barbier
- Saint-Luc University Hospital, Brussels, Belgium
- Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium
| | - Xavier Libouton
- Saint-Luc University Hospital, Brussels, Belgium
- Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium
| | - Virginie Fraselle
- Saint-Luc University Hospital, Brussels, Belgium
- Faculty of Motor Sciences, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Dominique Mouraux
- Faculty of Motor Sciences, Université libre de Bruxelles, Brussels, Belgium
- Erasme University Hospital, Brussels, Belgium
| | - Valéry Legrain
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
- Psychological Sciences Research Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
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13
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Abstract
The analysis and interpretation of somatosensory information are performed by a complex network of brain areas located mainly in the parietal cortex. Somatosensory deficits are therefore a common impairment following lesions of the parietal lobe. This chapter summarizes the clinical presentation, examination, prognosis, and therapy of sensory deficits, along with current knowledge about the anatomy and function of the somatosensory system. We start by reviewing how somatosensory signals are transmitted to and processed by the parietal lobe, along with the anatomic and functional features of the somatosensory system. In this context, we highlight the importance of the thalamus for processing somatosensory information in the parietal lobe. We discuss typical patterns of somatosensory deficits, their clinical examination, and how they can be differentiated through a careful neurologic examination that allows the investigator to deduce the location and size of the underlying lesion. In the context of adaption and rehabilitation of somatosensory functions, we delineate the importance of somatosensory information for motor performance and the prognostic evaluation of somatosensory deficits. Finally, we review current rehabilitation approaches for directing cortical reorganization in the appropriate direction and highlight some challenging questions that are unexplored in the field.
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Affiliation(s)
- Carsten M Klingner
- Hans-Berger Department of Neurology, Jena University Hospital, Jena, Germany; Biomagnetic Center, Hans-Berger Department of Neurology, Jena University Hospital, Jena, Germany.
| | - Otto W Witte
- Hans-Berger Department of Neurology, Jena University Hospital, Jena, Germany
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14
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Extinction as a deficit of the decision-making circuitry in the posterior parietal cortex. HANDBOOK OF CLINICAL NEUROLOGY 2018. [PMID: 29519457 DOI: 10.1016/b978-0-444-63622-5.00008-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register]
Abstract
Extinction is a common neurologic deficit that often occurs as one of a constellation of symptoms seen with lesions of the posterior parietal cortex (PPC). Although extinction has typically been considered a deficit in the allocation of attention, new findings, particularly from nonhuman primate studies, point to one potential and important source of extinction as damage to decision-making circuits for actions within the PPC. This new understanding provides clues to potential therapies for extinction. Also the finding that the PPC is important for action decisions and action planning has led to new neuroprosthetic applications using PPC recordings as control signals to assist paralyzed patients.
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15
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Abstract
There are many varieties of “attention”, to some extent separate yet working together to produce coherent perception, thought, and behaviour. Using data from human behaviour, functional neuroimaging, and single-cell recording in the behaving monkey, I consider different levels of attention and their basis in physiological mechanisms of biased competition. Beginning with visual attention, I suggest that processing is competitive in many brain systems that code visual input. Competition is biased towards stimuli that match task requirements and is integrated between systems coding different object properties. The result is flexible, object-based attentional selection. In the second part of the paper, I describe recent experiments on attentional competition within and between sensory modalities. Though competition is often modality specific, more global levels of interference are also easy to demonstrate. In the third part of the paper, I move to frontoparietal cortex and to a pattern of similar brain regions recruited by many different cognitive demands. This multiple-demand (MD) pattern, I suggest, reflects neurons with highly flexible response properties, adapting to represent the information and events of many different tasks. Biased competition in MD regions may play a central role in broad attentional capacity limits and attentional focusing. More generally, I suggest that biased competition is characteristic of many different cognitive domains and brain systems. Coherent “attention” develops as different systems converge to work on related cognitive content.
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Affiliation(s)
- John Duncan
- MRC Cognition and Brain Sciences Unit, 15 Chaucer Rd, Cambridge, CB2 2EF, UK.
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16
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Adapting the concepts of brain and cognitive reserve to post-stroke cognitive deficits: Implications for understanding neglect. Cortex 2017; 97:327-338. [DOI: 10.1016/j.cortex.2016.12.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 08/03/2016] [Accepted: 12/04/2016] [Indexed: 01/17/2023]
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17
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Okita M, Yukihiro T, Miyamoto K, Morioka S, Kaba H. Defective imitation of finger configurations in patients with damage in the right or left hemispheres: An integration disorder of visual and somatosensory information? Brain Cogn 2017; 113:109-116. [DOI: 10.1016/j.bandc.2017.01.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 01/20/2017] [Accepted: 01/23/2017] [Indexed: 11/28/2022]
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18
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Vizzari V, Barba S, Gindri P, Duca S, Giobbe D, Cerrato P, Geminiani G, Torta DM. Mechanical pinprick pain in patients with unilateral spatial neglect: The influence of space representation on the perception of nociceptive stimuli. Eur J Pain 2016; 21:738-749. [PMID: 27977072 DOI: 10.1002/ejp.978] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2016] [Indexed: 11/11/2022]
Abstract
BACKGROUND Crossing the hands over the midline can reduce the perceived intensity of nociceptive stimuli applied onto the hands. It remains unclear to what extent intact representation of peripersonal space influences this effect. Here we used the crossed-hands paradigm in patients with unilateral spatial neglect, a neuropsychological condition characterized by the inability to detect, attend and respond to contralesional (most often left) stimuli, and spared ability to process stimuli in the non-affected space. METHODS Sixteen post-stroke patients without unilateral neglect and 11 patients with unilateral spatial neglect received punctate mechanical pinprick stimuli onto their crossed or uncrossed hands. We tested: (i) whether deficits in space representation reduce the possibility of observing 'crossed-hands analgesia', and; (ii) whether placing the contralesional hand, normally lying in the affected space in the healthy space would increase the number of detected stimuli. RESULTS Our results showed that neglect patients did not exhibit 'crossed-hands' analgesia, but did not provide strong evidence for an improvement in the number of detected stimuli when the contralesional hand was in the healthy space. CONCLUSION These findings uphold the notion that the perception of nociceptive stimuli is modulated by the relative position of the hands in space, but raise questions about the conditions under which these effects may arise. SIGNIFICANCE We show that deficits in space representation can influence the processing of mechanical pinprick stimuli. Our results raise several questions on the mechanisms underlying these effects, which are relevant for the clinical practice.
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Affiliation(s)
- V Vizzari
- Department of Psychology, Universita' degli studi di Torino, Italy
| | - S Barba
- San Camillo Hospital, Torino, Italy
| | - P Gindri
- San Camillo Hospital, Torino, Italy
| | - S Duca
- Koelliker Hospital, Torino, Italy
| | - D Giobbe
- Division of Neurology, Città della Salute e della Scienza, Torino, Italy
| | - P Cerrato
- Stroke Unit, Division of Neurology, Citta della Salute e della Scienza, Torino, Italy
| | - G Geminiani
- Department of Psychology, Universita' degli studi di Torino, Italy
| | - D M Torta
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
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Kamtchum-Tatuene J, Allali G, Saj A, Bernati T, Sztajzel R, Pollak P, Momjian-Mayor I, Kleinschmidt A. An exploratory cohort study of sensory extinction in acute stroke: prevalence, risk factors, and time course. J Neural Transm (Vienna) 2016; 124:483-494. [PMID: 27942884 PMCID: PMC5357267 DOI: 10.1007/s00702-016-1663-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 12/01/2016] [Indexed: 12/01/2022]
Abstract
Most studies on sensory extinction have focused on selected patients with subacute and chronic right hemisphere lesions. In studies conducted on acute stroke patients, risk factors and time course were not evaluated. Our aim was to determine the prevalence, risk factors, and time course of sensory extinction in the acute stroke setting. Consecutive patients with acute stroke were tested for tactile, visual, auditory, and auditory-tactile cross-modal extinction, as well as for peripersonal visuospatial neglect (PVN). Tests were repeated at 2, 7, 15, 30, and 90 days after initial examination. A multivariable logistic regression analysis was performed to test the association between sensory extinction and demographic and clinical risk factors. Seventy-three patients (38.4% women) were recruited: 64 with ischemic stroke and nine with haemorrhagic stroke. Mean age was 62.3 years (95% CI 58.8–65.7), mean NIHSS score was 1.6 (95% CI 1.2–2.1), and mean time to first examination was 4.1 days (95% CI 3.5–4.8). The overall prevalence of all subtypes of sensory extinction was 13.7% (95% CI 6.8–23.8). Tactile extinction was the most frequent subtype with a prevalence of 8.2% (95% CI 3.1–17.0). No extinction was found beyond 15 days after the first examination. After adjustment for age, sex, lesion side, type of stroke, time to first examination and stroke severity, a lesion volume ≥2 mL (adjusted OR = 38.88, p = 0.04), and presence of PVN (adjusted OR = 24.27, p = 0.04) were independent predictors of sensory extinction. The insula, the putamen, and the pallidum were the brain regions most frequently involved in patients with sensory extinction. Extinction is a rare and transient phenomenon in patients with minor stroke. The presence of PVN and lesion volume ≥2 mL are independent predictors of sensory extinction in acute stroke.
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Affiliation(s)
- Joseph Kamtchum-Tatuene
- Neurology Division, Department of Clinical Neurosciences, Geneva University Hospital, Geneva, Switzerland. .,Brain Infections Group, Institute of Infection and Global Health, University of Liverpool, 8 West Derby Street, Liverpool, L69 7BE, UK.
| | - Gilles Allali
- Neurology Division, Department of Clinical Neurosciences, Geneva University Hospital, Geneva, Switzerland.,Division of Cognitive and Motor Aging, Department of Neurology, Albert Einstein College of Medicine, Yeshiva University, Bronx, NY, USA
| | - Arnaud Saj
- Neurology Division, Department of Clinical Neurosciences, Geneva University Hospital, Geneva, Switzerland.,Neurology and Cognitive Imaging Laboratory, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Thérèse Bernati
- Neurology Division, Department of Clinical Neurosciences, Geneva University Hospital, Geneva, Switzerland
| | - Roman Sztajzel
- Neurology Division, Department of Clinical Neurosciences, Geneva University Hospital, Geneva, Switzerland
| | - Pierre Pollak
- Neurology Division, Department of Clinical Neurosciences, Geneva University Hospital, Geneva, Switzerland
| | | | - Andreas Kleinschmidt
- Neurology Division, Department of Clinical Neurosciences, Geneva University Hospital, Geneva, Switzerland
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20
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Visual neglect after left-hemispheric lesions: a voxel-based lesion–symptom mapping study in 121 acute stroke patients. Exp Brain Res 2016; 235:83-95. [DOI: 10.1007/s00221-016-4771-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 09/06/2016] [Indexed: 10/21/2022]
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21
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Capturing peripersonal spatial neglect: an electronic method to quantify visuospatial processes. Behav Res Methods 2015; 47:27-44. [PMID: 24567147 DOI: 10.3758/s13428-014-0448-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Computerized as well as paper-and-pencil tasks are applied in mapping visuospatial neglect in experimental research and clinical practice. This article presents a new kind of computer-based assessment method, using an electronic pen display and user-friendly software. The approach is tailored to specific spatial processes and highlights the usefulness of a pen display in neglect patients. The advantages of the introduced method are illustrated by a recently designed battery of classic, as well as new, types of tests. The development of the appropriate stimuli and the assorted scoring systems is addressed, as well as the resulting types of task implementation and data generation. The diagnostic value of the different visuospatial neglect tests is demonstrated by comparative analyses between a neglect group and a control group. Among the benefits of the proposed assessment method are (1) the opportunity to perform standardized repeated measurements to quantify recovery, (2) online performance monitoring, (3) flexible employment, (4) the collection of exact data over a short period, and (5) the easy availability of more refined quantitative as well as interesting qualitative information, especially as compared to classic or paper-and-pencil tasks. To indicate that this method also lends itself well to measures for treatment procedures, an illustration is given with respect to specific measurements during prism adaptation. The tasks of the Visuospatial Neglect Test Battery and the prism adaptation measures are illustrated by a case study. The outlined applications are discussed with respect to experimental as well as clinical purposes.
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22
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Beume LA, Kaller CP, Hoeren M, Klöppel S, Kuemmerer D, Glauche V, Köstering L, Mader I, Rijntjes M, Weiller C, Umarova R. Processing of bilateral versus unilateral conditions: Evidence for the functional contribution of the ventral attention network. Cortex 2015; 66:91-102. [DOI: 10.1016/j.cortex.2015.02.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 02/24/2015] [Accepted: 02/25/2015] [Indexed: 10/23/2022]
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23
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24
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25
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Does galvanic vestibular stimulation reduce spatial neglect? A negative study. Ann Phys Rehabil Med 2014; 57:570-7. [DOI: 10.1016/j.rehab.2014.09.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 09/21/2014] [Accepted: 09/21/2014] [Indexed: 11/22/2022]
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26
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A comparison of the effects of repetitive transcranial magnetic stimulation (rTMS) by number of stimulation sessions on hemispatial neglect in chronic stroke patients. Exp Brain Res 2014; 233:283-9. [DOI: 10.1007/s00221-014-4112-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 09/22/2014] [Indexed: 10/24/2022]
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27
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Plow EB, Cattaneo Z, Carlson TA, Alvarez GA, Pascual-Leone A, Battelli L. The compensatory dynamic of inter-hemispheric interactions in visuospatial attention revealed using rTMS and fMRI. Front Hum Neurosci 2014; 8:226. [PMID: 24860462 PMCID: PMC4029023 DOI: 10.3389/fnhum.2014.00226] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 03/31/2014] [Indexed: 11/25/2022] Open
Abstract
A balance of mutual tonic inhibition between bi-hemispheric posterior parietal cortices is believed to play an important role in bilateral visual attention. However, experimental support for this notion has been mainly drawn from clinical models of unilateral damage. We have previously shown that low-frequency repetitive TMS (rTMS) over the intraparietal sulcus (IPS) generates a contralateral attentional deficit in bilateral visual tracking. Here, we used functional magnetic resonance imaging (fMRI) to study whether rTMS temporarily disrupts the inter-hemispheric balance between bilateral IPS in visual attention. Following application of 1 Hz rTMS over the left IPS, subjects performed a bilateral visual tracking task while their brain activity was recorded using fMRI. Behaviorally, tracking accuracy was reduced immediately following rTMS. Areas ventro-lateral to left IPS, including inferior parietal lobule (IPL), lateral IPS (LIPS), and middle occipital gyrus (MoG), showed decreased activity following rTMS, while dorsomedial areas, such as Superior Parietal Lobule (SPL), Superior occipital gyrus (SoG), and lingual gyrus, as well as middle temporal areas (MT+), showed higher activity. The brain activity of the homologues of these regions in the un-stimulated, right hemisphere was reversed. Interestingly, the evolution of network-wide activation related to attentional behavior following rTMS showed that activation of most occipital synergists adaptively compensated for contralateral and ipsilateral decrement after rTMS, while activation of parietal synergists, and SoG remained competing. This pattern of ipsilateral and contralateral activations empirically supports the hypothesized loss of inter-hemispheric balance that underlies clinical manifestation of visual attentional extinction.
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Affiliation(s)
- Ela B Plow
- Department of Biomedical Engineering and Department of Physical Medicine and Rehabilitation, Cleveland Clinic Cleveland, OH, USA ; Department of Neurology, Beth Israel Deaconess Medical Center, Berenson-Allen Center for Noninvasive Brain Stimulation, Harvard Medical School Boston, MA, USA
| | - Zaira Cattaneo
- Department of Neurology, Beth Israel Deaconess Medical Center, Berenson-Allen Center for Noninvasive Brain Stimulation, Harvard Medical School Boston, MA, USA ; Department of Psychology, University of Milano-Bicocca Milano, Italy ; Brain Connectivity Center, National Neurological Institute C. Mondino Pavia, Italy
| | - Thomas A Carlson
- Department of Cognitive Science, Macquarie University Sydney, NSW, Australia ; Department of Psychology, Harvard University Cambridge, MA, USA
| | | | - Alvaro Pascual-Leone
- Department of Neurology, Beth Israel Deaconess Medical Center, Berenson-Allen Center for Noninvasive Brain Stimulation, Harvard Medical School Boston, MA, USA ; Instituto Guttmann de Neurorrehabilitación, Universidad Autónoma de Barcelona Badalona, España
| | - Lorella Battelli
- Department of Neurology, Beth Israel Deaconess Medical Center, Berenson-Allen Center for Noninvasive Brain Stimulation, Harvard Medical School Boston, MA, USA ; Center for Neuroscience and Cognitive Systems@UniTn, Fondazione Istituto Italiano di Tecnologia Rovereto, Italy
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28
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Ticini LF. On the debated role of temporo-parietal dysfunction in patients with basal ganglia neglect. Front Behav Neurosci 2013; 7:168. [PMID: 24302901 PMCID: PMC3831090 DOI: 10.3389/fnbeh.2013.00168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 11/01/2013] [Indexed: 11/25/2022] Open
Affiliation(s)
- Luca F Ticini
- The Italian Society for Neuroaesthetics 'Semir Zeki' Trieste, Italy
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29
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Urner M, Sarri M, Grahn J, Manly T, Rees G, Friston K. The role of prestimulus activity in visual extinction. Neuropsychologia 2013; 51:1630-7. [PMID: 23680398 PMCID: PMC3702998 DOI: 10.1016/j.neuropsychologia.2013.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 05/02/2013] [Accepted: 05/06/2013] [Indexed: 11/23/2022]
Abstract
Patients with visual extinction following right-hemisphere damage sometimes see and sometimes miss stimuli in the left visual field, particularly when stimuli are presented simultaneously to both visual fields. Awareness of left visual field stimuli is associated with increased activity in bilateral parietal and frontal cortex. However, it is unknown why patients see or miss these stimuli. Previous neuroimaging studies in healthy adults show that prestimulus activity biases perceptual decisions, and biases in visual perception can be attributed to fluctuations in prestimulus activity in task relevant brain regions. Here, we used functional MRI to investigate whether prestimulus activity affected perception in the context of visual extinction following stroke. We measured prestimulus activity in stimulus-responsive cortical areas during an extinction paradigm in a patient with unilateral right parietal damage and visual extinction. This allowed us to compare prestimulus activity on physically identical bilateral trials that either did or did not lead to visual extinction. We found significantly increased activity prior to stimulus presentation in two areas that were also activated by visual stimulation: the left calcarine sulcus and right occipital inferior cortex. Using dynamic causal modelling (DCM) we found that both these differences in prestimulus activity and stimulus evoked responses could be explained by enhanced effective connectivity within and between visual areas, prior to stimulus presentation. Thus, we provide evidence for the idea that differences in ongoing neural activity in visually responsive areas prior to stimulus onset affect awareness in visual extinction, and that these differences are mediated by fluctuations in extrinsic and intrinsic connectivity. Prestimulus activity in visual extinction affects perception. The BOLD signal in two visual areas is indicative of perception in bilateral trials. Intrinsic and extrinsic connectivity is elevated prior to perceived trials.
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Affiliation(s)
- Maren Urner
- UCL Institute of Cognitive Neuroscience, London WC1N 3AR, UK.
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30
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Schmidt L, Utz KS, Depper L, Adams M, Schaadt AK, Reinhart S, Kerkhoff G. Now You Feel both: Galvanic Vestibular Stimulation Induces Lasting Improvements in the Rehabilitation of Chronic Tactile Extinction. Front Hum Neurosci 2013; 7:90. [PMID: 23519604 PMCID: PMC3602932 DOI: 10.3389/fnhum.2013.00090] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 03/03/2013] [Indexed: 11/16/2022] Open
Abstract
Tactile extinction is frequent, debilitating, and often persistent after brain damage. Currently, there is no treatment available for this disorder. In two previous case studies we showed an influence of galvanic vestibular stimulation (GVS) on tactile extinction. Here, we evaluated in further patients the immediate and lasting effects of GVS on tactile extinction. GVS is known to induce polarity-specific changes in cerebral excitability in the vestibular cortices and adjacent cortical areas. Tactile extinction was examined with the Quality Extinction Test (QET) where subjects have to discriminate six different tactile fabrics in bilateral, double simultaneous stimulations on their dorsum of hands with identical or different tactile fabrics. Twelve patients with stable left-sided tactile extinction after unilateral right-hemisphere lesions were divided into two groups. The GVS group (N = 6) performed the QET under six different experimental conditions (two Baselines, Sham-GVS, left-cathodal/right-anodal GVS, right-cathodal/left-anodal GVS, and a Follow-up test). The second group of patients with left-sided extinction (N = 6) performed the QET six times repetitively, but without receiving GVS (control group). Both right-cathodal/left-anodal as well as left-cathodal/right-anodal GVS (mean: 0.7 mA) improved tactile identification of identical and different stimuli in the experimental group. These results show a generic effect of GVS on tactile extinction, but not in a polarity-specific way. These observed effects persisted at follow-up. Sham-GVS had no significant effect on extinction. In the control group, no significant improvements were seen in the QET after the six measurements of the QET, thus ruling out test repetition effects. In conclusion, GVS improved bodily awareness permanently for the contralesional body side in patients with tactile extinction and thus offers a novel treatment option for these patients.
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Affiliation(s)
- Lena Schmidt
- Clinical Neuropsychology Unit and Outpatient Service, Saarland University Saarbruecken, Germany ; International Research Training Group 1457 "Adaptive Minds," Saarbruecken, Germany
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31
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Common and distinct neural mechanisms of visual and tactile extinction: A large scale VBM study in sub-acute stroke. NEUROIMAGE-CLINICAL 2013; 2:291-302. [PMID: 24179784 PMCID: PMC3777674 DOI: 10.1016/j.nicl.2013.01.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 01/30/2013] [Accepted: 01/31/2013] [Indexed: 11/27/2022]
Abstract
Extinction is diagnosed when patients respond to a single contralesional item but fail to detect this item when an ipsilesional item is present concurrently. Extinction has been studied mainly in the visual modality but it occurs also in other sensory modalities (touch, audition) and hence can be considered a multisensory phenomenon. The functional and neuroanatomical relations between extinction in different modalities are poorly understood. Here, we used voxel-based mophometry (VBM) to examine the neuronal substrates of visual versus tactile extinction in a large group of sub-acute patients (n = 454) with strokes affecting different vascular territories. We found that extinction deficits in tactile and visual modalities were significantly correlated (r = 0.341; p < 0.01). Several lesions within the right hemisphere were linked to extinction including the inferior parietal lobule, the superior parietal lobule, the middle frontal and occipital gyri, while lesions involving the superior temporal gyrus, inferior temporal gyrus and putamen were associated with tactile extinction. Damage within the middle temporal gyrus and superior temporal sulcus was linked to both deficits. We conclude that extinction in different modalities emerges after damage to both common (supra-modal) and distinct (modality specific) brain regions, and that contrasting sites emerge after damage to different vascular territories. We discuss the implications for understanding extinction as a multisensory disorder.
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32
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Chechlacz M, Rotshtein P, Hansen PC, Deb S, Riddoch MJ, Humphreys GW. The central role of the temporo-parietal junction and the superior longitudinal fasciculus in supporting multi-item competition: Evidence from lesion-symptom mapping of extinction. Cortex 2013; 49:487-506. [DOI: 10.1016/j.cortex.2011.11.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Revised: 05/13/2011] [Accepted: 11/16/2011] [Indexed: 11/28/2022]
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33
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Impaired visual sensitivity within the ipsilesional hemifield following parietal lobe damage. Cortex 2013; 49:158-71. [DOI: 10.1016/j.cortex.2011.07.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Revised: 04/12/2011] [Accepted: 07/21/2011] [Indexed: 11/18/2022]
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34
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An anatomical account of somatoparaphrenia. Cortex 2012; 48:1165-78. [DOI: 10.1016/j.cortex.2011.06.012] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 04/22/2011] [Accepted: 06/09/2011] [Indexed: 11/18/2022]
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35
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Maravita A, Cigada M, Posteraro L. Talking to the senses: modulation of tactile extinction through hypnotic suggestion. Front Hum Neurosci 2012; 6:210. [PMID: 22822395 PMCID: PMC3398471 DOI: 10.3389/fnhum.2012.00210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Accepted: 06/27/2012] [Indexed: 11/13/2022] Open
Abstract
Following brain damage, typically of the right hemisphere, patients can show reduced awareness of sensory events occurring in the space contralateral to the brain damage. The present work shows that a hypnotic suggestion can temporarily reduce tactile extinction to double bilateral stimulation, i.e., a loss of contralesional stimuli when these are presented together with ipsilesional ones. Patient EB showed an improved detection of contralesional targets after a single 20-min hypnosis session, during which specific suggestions were delivered with the aim of increasing her insight into somatosensory perception on both sides of the body. Simple overt attention orienting toward the contralesional side, or a hypnotic induction procedure not accompanied by specifically aimed suggestions, were not effective in modulating extinction. The present result is the first systematic evidence that hypnosis can temporarily improve a neuropsychological condition, namely Extinction, and may open the way for the use of this technique as a fruitful rehabilitative tool for brain-damaged patients affected by neuropsychological deficits.
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Affiliation(s)
- Angelo Maravita
- Department of Psychology, University of Milano-Bicocca Milano, Italy
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Heidler-Gary J, Pawlak M, Herskovits EH, Newhart M, Davis C, Trupe LA, Hillis AE. Motor extinction in distinct reference frames: a double dissociation. Behav Neurol 2012; 26:111-9. [PMID: 22713397 PMCID: PMC3459173 DOI: 10.3233/ben-2012-110254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Test the hypothesis that right hemisphere stroke can cause extinction of left hand movements or movements of either hand held in left space, when both are used simultaneously, possibly depending on lesion site. METHODS 93 non-hemiplegic patients with acute right hemisphere stroke were tested for motor extinction by pressing a counter rapidly for one minute with the right hand, left hand, or both simultaneously with their hands held at their sides, or crossed over midline. RESULTS We identified two distinct types of motor extinction in separate patients; 20 patients extinguished left hand movements held in left or right space (left canonical body extinction); the most significantly associated voxel cluster of ischemic tissue was in the right temporal white matter. Seven patients extinguished either hand held in left space (left space extinction), and the most significantly associated voxel cluster of ischemic tissue was in right parietal white matter. CONCLUSIONS There was a double dissociation between left canonical body extinction and left space motor extinction. Left canonical body extinction seems to be associated with more dorsal (parietal) ischemia, and left canonical body extinction seems to be associated with more ventral (temporal) ischemia.
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Affiliation(s)
- Jennifer Heidler-Gary
- Department of Neurology, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
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de Haan B, Karnath HO, Driver J. Mechanisms and anatomy of unilateral extinction after brain injury. Neuropsychologia 2012; 50:1045-53. [DOI: 10.1016/j.neuropsychologia.2012.02.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Revised: 02/14/2012] [Accepted: 02/20/2012] [Indexed: 11/24/2022]
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Molenberghs P, Sale MV, Mattingley JB. Is there a critical lesion site for unilateral spatial neglect? A meta-analysis using activation likelihood estimation. Front Hum Neurosci 2012; 6:78. [PMID: 22514528 PMCID: PMC3322487 DOI: 10.3389/fnhum.2012.00078] [Citation(s) in RCA: 123] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Accepted: 03/20/2012] [Indexed: 01/01/2023] Open
Abstract
The critical lesion site responsible for the syndrome of unilateral spatial neglect has been debated for more than a decade. Here we performed an activation likelihood estimation (ALE) to provide for the first time an objective quantitative index of the consistency of lesion sites across anatomical group studies of spatial neglect. The analysis revealed several distinct regions in which damage has consistently been associated with spatial neglect symptoms. Lesioned clusters were located in several cortical and subcortical regions of the right hemisphere, including the middle and superior temporal gyrus, inferior parietal lobule, intraparietal sulcus, precuneus, middle occipital gyrus, caudate nucleus, and posterior insula, as well as in the white matter pathway corresponding to the posterior part of the superior longitudinal fasciculus. Further analyses suggested that separate lesion sites are associated with impairments in different behavioral tests, such as line bisection and target cancellation. Similarly, specific subcomponents of the heterogeneous neglect syndrome, such as extinction and allocentric and personal neglect, are associated with distinct lesion sites. Future progress in delineating the neuropathological correlates of spatial neglect will depend upon the development of more refined measures of perceptual and cognitive functions than those currently available in the clinical setting.
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Affiliation(s)
- Pascal Molenberghs
- School of Psychology, The University of Queensland, Brisbane QLD, Australia
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Auditory extinction and spatio-temporal order judgment in patients with left- and right-hemisphere lesions. Neuropsychologia 2012; 50:892-903. [DOI: 10.1016/j.neuropsychologia.2012.01.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 11/28/2011] [Accepted: 01/19/2012] [Indexed: 11/23/2022]
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Jacobs S, Brozzoli C, Farnè A. Neglect: a multisensory deficit? Neuropsychologia 2012; 50:1029-44. [PMID: 22465475 DOI: 10.1016/j.neuropsychologia.2012.03.018] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 03/12/2012] [Accepted: 03/16/2012] [Indexed: 11/29/2022]
Abstract
Neglect is a neurological syndrome characterised by a lack of conscious perception of events localised in the contralesional side of space. Here, we consider the possible multisensory nature of this disorder, critically reviewing the literature devoted to multisensory manifestations and processing in neglect. Although its most striking manifestations have been observed in the visual domain, a number of studies demonstrate that neglect can affect virtually any sensory modality, in particular touch and audition. Furthermore, a few recent studies have reported a correlation in severity between visual and non-visual neglect-related deficits evaluated in the same patients, providing some preliminary support for a multisensory conception of neglect. Sensory stimulation and sensorimotor adaptation techniques, aimed at alleviating neglect, have also been shown to affect several sensory modalities, including some that were not directly affected by the intervention. Finally, in some cases neglect can bias multisensory interactions known to occur in healthy individuals, leading to abnormal behaviour or uncovering multisensory compensation mechanisms. This evidence, together with neurophysiological and neuroimaging data revealing the multisensory role played by the areas that are most commonly damaged in neglect patients, seems to speak in favour of neglect as a multisensory disorder. However, since most previous studies were not conducted with the specific purpose of systematically investigating the multisensory nature of neglect, we conclude that more research is needed to appropriately assess this question, and suggest some methodological guidelines that we hope will help clarify this issue. At present, the conception of neglect as a multisensory disorder remains a promising working hypothesis that may help define the pathophysiology of this syndrome.
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Affiliation(s)
- Stéphane Jacobs
- INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center, ImpAct Team, Lyon F-69000, France.
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41
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Abstract
Whereas contralesional spatial neglect is usually caused by right temporo-parietal lesions, ipsilesional spatial neglect is induced primarily by right frontal lesions. This report describes a 73-year-old woman with a right inferior parietal lesion who on 'where' tasks (line bisection and midline pointing) demonstrated ipsilesional neglect, but on 'what' tests (gap vs. no-gap detection cancellation and clothing tape removal) demonstrated contralesional neglect. This 'what' and 'where' directional dissociation provides evidence for independent 'what' and 'where' attentional networks; however, the reason this parietal lesion causes this contralesional vs. ipsilesional spatial attentional 'what' and 'where' dichotomy remains to be determined.
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Affiliation(s)
- Jay Cheol Kwon
- Department of Neurology, Changwon Fatima Hospital, Changwon, South Korea.
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42
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Mancini F, Bricolo E, Mattioli FC, Vallar G. Visuo-haptic interactions in unilateral spatial neglect: the cross modal judd illusion. Front Psychol 2011; 2:341. [PMID: 22164149 PMCID: PMC3222222 DOI: 10.3389/fpsyg.2011.00341] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Accepted: 11/01/2011] [Indexed: 11/13/2022] Open
Abstract
Unilateral spatial neglect (USN) has been mainly investigated in the visual modality; only few studies compared spatial neglect across different sensory modalities, and explored their multisensory interactions, with controversial results. We investigated the integration between vision and haptics, through a bisection task of a cross modal illusion, the Judd variant of the Müller-Lyer illusion. We examined right-brain-damaged patients with (n = 7) and without (n = 7) left USN, and neurologically unimpaired participants (n = 14) in the bisection of Judd stimuli under visual, haptic, and visuo-haptic presentation. Neglect patients showed the characteristic rightward bias in the bisection of the baseline stimuli in the visual modality, but not in the haptic and visuo-haptic conditions. The illusory effects were preserved in each group and in each modality, indicating that the processing of the cross modal illusion is independent of the presence of deficits of spatial attention and representation. Spatial neglect can be modality-specific, but visual and tactile sensory inputs are properly integrated.
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Affiliation(s)
- Flavia Mancini
- Department of Psychology, University of Milano-BicoccaMilano, Italy
- Neuropsychological Laboratory, IRCCS Italian Auxological InstituteMilano, Italy
| | - Emanuela Bricolo
- Department of Psychology, University of Milano-BicoccaMilano, Italy
| | | | - Giuseppe Vallar
- Department of Psychology, University of Milano-BicoccaMilano, Italy
- Neuropsychological Laboratory, IRCCS Italian Auxological InstituteMilano, Italy
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Umarova RM, Saur D, Kaller CP, Vry MS, Glauche V, Mader I, Hennig J, Weiller C. Acute visual neglect and extinction: distinct functional state of the visuospatial attention system. Brain 2011; 134:3310-25. [DOI: 10.1093/brain/awr220] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Jacobs S, Brozzoli C, Hadj-Bouziane F, Meunier M, Farnè A. Studying Multisensory Processing and Its Role in the Representation of Space through Pathological and Physiological Crossmodal Extinction. Front Psychol 2011; 2:89. [PMID: 21687458 PMCID: PMC3110341 DOI: 10.3389/fpsyg.2011.00089] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Accepted: 04/26/2011] [Indexed: 11/23/2022] Open
Abstract
The study of crossmodal extinction has brought a considerable contribution to our understanding of how the integration of stimuli perceived in multiple sensory modalities is used by the nervous system to build coherent representations of the space that directly surrounds us. Indeed, by revealing interferences between stimuli in a disturbed system, extinction provides an invaluable opportunity to investigate the interactions that normally exist between those stimuli in an intact system. Here, we first review studies on pathological crossmodal extinction, from the original demonstration of its existence, to its role in the exploration of the multisensory neural representation of space and the current theoretical accounts proposed to explain the mechanisms involved in extinction and multisensory competition. Then, in the second part of this paper, we report recent findings showing that physiological multisensory competition phenomena resembling clinical crossmodal extinction exist in the healthy brain. We propose that the development of a physiological model of sensory competition is fundamental to deepen our understanding of the cerebral mechanisms of multisensory perception and integration. In addition, a similar approach to develop a model of physiological sensory competition in non-human primates should allow combining functional neuroimaging with more invasive techniques, such as transient focal lesions, in order to bridge the gap between works done in the two species and at different levels of analysis.
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Affiliation(s)
- Stéphane Jacobs
- ImpAct Team, INSERM U1028, Lyon Neuroscience Research Center Lyon, France
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Liu C, Veldhuijzen D, Ohara S, Winberry J, Greenspan J, Lenz F. Spatial attention to thermal pain stimuli in subjects with visual spatial hemi-neglect: extinction, mislocalization and misidentification of stimulus modality. Pain 2011; 152:498-506. [PMID: 21111534 PMCID: PMC3403741 DOI: 10.1016/j.pain.2010.10.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Revised: 09/09/2010] [Accepted: 10/13/2010] [Indexed: 11/27/2022]
Abstract
One approach to the study of disordered spatial attention is to carry out tests of extinction, in which stimuli are detected on the left when they are presented on the left alone, but not when both sides are stimulated simultaneously in a dual simultaneous stimulation (DSS) protocol. Extinction has been documented for multiple sensory modalities, but not for thermal pain stimuli, to our knowledge. We now test the hypothesis that subjects with visual spatial neglect (hemi-neglect) will have alterations in thermal pain sensation which are related to abnormal spatial attention. The results demonstrate that thermal pain extinction of hot and cold pain stimuli occurs in a proportion of subjects with hemi-neglect. In the subjects with visual spatial hemi-neglect but without thermal pain extinction, the sensation of the thermal pain stimulus on the affected (left) side was not extinguished but was often localized to the unaffected (right) side, and the submodality of the stimulus (cold or hot) was often misidentified. Ratios indicating the magnitude of extinction, mislocalization and misidentification were significantly larger on the left side of subjects with visual spatial neglect than in healthy controls or in controls with stroke but without hemineglect. The proportion of subjects with thermal pain extinction, mislocalization, or misidentification was significantly higher in subjects with hemi-neglect than those in either control group. These results demonstrate that disordered attention exerts a powerful effect upon the perception of both the location and the quality of thermal pain stimuli.
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Affiliation(s)
- C.C. Liu
- Neurosurgery Dept., Johns Hopkins Hospital, Baltimore, MD, USA
| | - D.S. Veldhuijzen
- Division of Perioperative Care and Emergency Medicine, Rudolf Magus Institute of Neuroscience, Pain Clinic, University Medical Center Utrecht, Utrecht, The Netherlands
| | - S. Ohara
- Neurosurgery Dept., Johns Hopkins Hospital, Baltimore, MD, USA
| | - J. Winberry
- Neurosurgery Dept., Johns Hopkins Hospital, Baltimore, MD, USA
| | - J.D. Greenspan
- Department of Neural and Pain Sciences, University of Maryland Dental School, Program in Neuroscience, Baltimore, USA
| | - F.A. Lenz
- Neurosurgery Dept., Johns Hopkins Hospital, Baltimore, MD, USA
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Kerkhoff G, Hildebrandt H, Reinhart S, Kardinal M, Dimova V, Utz KS. A long-lasting improvement of tactile extinction after galvanic vestibular stimulation: Two Sham-stimulation controlled case studies. Neuropsychologia 2011; 49:186-95. [DOI: 10.1016/j.neuropsychologia.2010.11.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Revised: 10/15/2010] [Accepted: 11/12/2010] [Indexed: 10/18/2022]
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Bonifazi S, Farnè A, Rinaldesi L, Làdavas E. Dynamic size-change of peri-hand space through tool-use: Spatial extension or shift of the multi-sensory area. J Neuropsychol 2010; 1:101-14. [DOI: 10.1348/174866407x180846] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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48
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Ticini LF, de Haan B, Klose U, Nägele T, Karnath HO. The Role of Temporo-parietal Cortex in Subcortical Visual Extinction. J Cogn Neurosci 2010; 22:2141-50. [DOI: 10.1162/jocn.2009.21315] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Abstract
Visual extinction is an intriguing defect of awareness in stroke patients, referring to the unsuccessful perception of contralesional events under conditions of competition. Previous studies have investigated the cortical and subcortical brain structures that, when damaged or inactivated, provoke visual extinction. The present experiment asked how lesions of subcortical structures may contribute to the appearance of visual extinction. We investigated whether lesions centering on right basal ganglia may induce dysfunction in distant, structurally intact cortical structures. Normalized perfusion-weighted MRI was used to identify structurally intact but abnormally perfused brain tissue, that is, zones that are receiving enough blood supply to remain structurally intact but not enough to function normally. We compared patients with right basal ganglia lesions showing versus not showing visual extinction. In the extinction patients, the contrast revealed cortical malperfusion that clustered around the right TPJ. It seems as if malfunction of this area is a critical aspect in visual extinction not only after cortical lesion but also in the case of subcortical basal ganglia damage. Our results support the idea that a normally functioning TPJ area plays a decisive role for the attentional network involved in detecting of visual stimuli under conditions of competition.
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Eramudugolla R, Boyce A, Irvine DR, Mattingley JB. Effects of prismatic adaptation on spatial gradients in unilateral neglect: A comparison of visual and auditory target detection with central attentional load. Neuropsychologia 2010; 48:2681-92. [DOI: 10.1016/j.neuropsychologia.2010.05.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2009] [Revised: 05/04/2010] [Accepted: 05/09/2010] [Indexed: 11/30/2022]
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Vangkilde S, Habekost T. Finding Wally: Prism adaptation improves visual search in chronic neglect. Neuropsychologia 2010; 48:1994-2004. [DOI: 10.1016/j.neuropsychologia.2010.03.020] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 03/03/2010] [Accepted: 03/23/2010] [Indexed: 10/19/2022]
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