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Kenyon KH, Boonstra F, Noffs G, Morgan AT, Vogel AP, Kolbe S, Van Der Walt A. The characteristics and reproducibility of motor speech functional neuroimaging in healthy controls. Front Hum Neurosci 2024; 18:1382102. [PMID: 39171097 PMCID: PMC11335534 DOI: 10.3389/fnhum.2024.1382102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 07/22/2024] [Indexed: 08/23/2024] Open
Abstract
Introduction Functional magnetic resonance imaging (fMRI) can improve our understanding of neural processes subserving motor speech function. Yet its reproducibility remains unclear. This study aimed to evaluate the reproducibility of fMRI using a word repetition task across two time points. Methods Imaging data from 14 healthy controls were analysed using a multi-level general linear model. Results Significant activation was observed during the task in the right hemispheric cerebellar lobules IV-V, right putamen, and bilateral sensorimotor cortices. Activation between timepoints was found to be moderately reproducible across time in the cerebellum but not in other brain regions. Discussion Preliminary findings highlight the involvement of the cerebellum and connected cerebral regions during a motor speech task. More work is needed to determine the degree of reproducibility of speech fMRI before this could be used as a reliable marker of changes in brain activity.
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Affiliation(s)
- Katherine H. Kenyon
- Department of Neuroscience, School of Translational Medicine, Melbourne, VIC, Australia
| | - Frederique Boonstra
- Department of Neuroscience, School of Translational Medicine, Melbourne, VIC, Australia
| | - Gustavo Noffs
- Department of Neuroscience, School of Translational Medicine, Melbourne, VIC, Australia
- Redenlab Inc., Melbourne, VIC, Australia
| | - Angela T. Morgan
- Murdoch Childrens Research Institute, Royal Children's Hospital, Melbourne, VIC, Australia
- Department of Audiology and Speech Pathology, Faculty of Medicine, Dentistry and Health Sciences, Melbourne School of Health Sciences, University of Melbourne, Carlton, VIC, Australia
| | - Adam P. Vogel
- Redenlab Inc., Melbourne, VIC, Australia
- Department of Audiology and Speech Pathology, Parkville, VIC, Australia
| | - Scott Kolbe
- Department of Neuroscience, School of Translational Medicine, Melbourne, VIC, Australia
| | - Anneke Van Der Walt
- Department of Neuroscience, School of Translational Medicine, Melbourne, VIC, Australia
- Department of Neurology, Royal Melbourne Hospital, Melbourne, VIC, Australia
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Wu Y, Fang F, Li K, Jin Z, Ren X, Lv J, Ding C, Chen C, Han T, Zhang W, Wang N, Lin Z. Functional connectivity differences in speech production networks in Chinese children with Rolandic epilepsy. Epilepsy Behav 2022; 135:108819. [PMID: 35835716 DOI: 10.1016/j.yebeh.2022.108819] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 01/01/2023]
Abstract
Previous studies have demonstrated that language impairments are frequently observed in patients with benign epilepsy with centrotemporal spikes (BECTS). However, how BECTS affects language processing in the Chinese population remains unclear. With the use of functional magnetic resonance imaging (fMRI) in an overt picture-naming task, the present study examined functional connectivity in 27 children with BECTS and 26 healthy controls. The results indicated that children with BECTS showed altered functional connectivity associated with speech production between the left precuneus and the right cerebellum, between the right precuneus and the bilateral thalamus and the left superior temporal gyrus, between the right cuneus and the right postcentral gyrus and the right inferior parietal lobule, and between the right cerebellum and right middle frontal gyrus. Collectively, the findings in this study demonstrate the abnormal functional connectivity basis of speech production in Chinese children with BECTS, providing clues to understanding the brain mechanisms of language-related network in patients with BECTS.
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Affiliation(s)
- Yun Wu
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Fang Fang
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Ke Li
- fMRI Center, The 306 Hospital of People's Liberation Army, Beijing, China
| | - Zhen Jin
- fMRI Center, The 306 Hospital of People's Liberation Army, Beijing, China
| | - Xiaotun Ren
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Junlan Lv
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Changhong Ding
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Chunhong Chen
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Tongli Han
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Weihua Zhang
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Nizhuan Wang
- School of Biomedical Engineering, ShanghaiTech University, Shanghai, China; Artificial Intelligence & Neuro-Informatics Engineering (ARINE) Laboratory, School of Computer Engineering, Jiangsu Ocean University, Lianyungang, China
| | - Zhenglong Lin
- Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, China; Center for Brain Disorders and Cognitive Science, Shenzhen University, Shenzhen, China.
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3
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Functional Activation and Connectivity of the Left Inferior Frontal Gyrus during Lexical and Phonological Retrieval. Symmetry (Basel) 2021. [DOI: 10.3390/sym13091655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Being language a paradigm of structural and functional asymmetry in cognitive processing, the left Inferior Frontal Gyrus has been consistently related to speech production. In fact, it has been considered a key node in cortical networks responsible for different components of naming. However, isolating these components (e.g., lexical, syntactic, and phonological retrieval) in neuroimaging studies is difficult due to the use of different baselines and tasks. In the present study, functional activation and connectivity of the left inferior frontal gyrus was explored using functional magnetic resonance imaging. Participants performed a covert naming task (pressing a button based on a phonological characteristic). Two conditions were compared: drawings of objects and single letters (baseline condition). Differences in activation and functional connectivity were obtained for objects and letters in different areas of the left Inferior Frontal Gyrus. The pars triangularis was involved in the retrieval of lexical-phonological information, showing a pattern of connectivity with temporal areas in the search for the name of objects and with perisylvanian areas for letters. Selection of phonological information seems to involve the pars opercularis both to letters and objects but recruiting supramarginal and superior temporal areas to letters, probably related to orthographic-phonological conversion. The results support the notion of the left Inferior Frontal Gyrus as a buffer forwarding neural information across cortical networks responsible for different components of speech production.
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Magon S, Pfister A, Laura G, Lüthi M, Papadopoulou A, Kappos L, Sprenger T. Short timescale modulation of cortical and cerebellar activity in the early phase of motor sequence learning: an fMRI study. Brain Imaging Behav 2021; 14:2159-2175. [PMID: 31352651 DOI: 10.1007/s11682-019-00167-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Motor learning is a multi-stage process, in which the involvement of different brain regions is related to the specific stage. We aimed at characterising short timescale changes of brain activity induced by motor sequence learning. Twenty healthy volunteers performed a serial reaction time task during an MRI session in a 3 T scanner. The task consisted of two conditions: repeated and random, that were compared over the whole fMRI run, as well as within sections, to investigate brain activity modulating related to the learning stage. The whole fMRI run analysis showed a stronger response for the repeated condition in fronto-parietal regions, cerebellum and thalamus. The analysis on sections showed initially increased right cerebellar activity. In the subsequent phase, bilateral cerebellar activity was observed, while no increased activity was seen in the last phase, when the learning was established. At the neocortical level, the repeated condition showed stronger activity at first in fronto-parietal regions bilaterally, then lateralized to the right hemisphere in the last learning phase. This study showed short time scale brain activity modulation in cortical and cerebellar regions with involvement of different brain regions over the learning process not restricted to the motor circuit.
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Affiliation(s)
- Stefano Magon
- Department of Neurology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland.
- Medical Image Analysis Center, University Hospital Basel, Basel, Switzerland.
| | - Armanda Pfister
- Department of Neurology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
| | - Gaetano Laura
- Department of Neurology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
- Medical Image Analysis Center, University Hospital Basel, Basel, Switzerland
| | - Martin Lüthi
- Department of Neurology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
| | - Athina Papadopoulou
- Department of Neurology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
| | - Ludwig Kappos
- Department of Neurology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
| | - Till Sprenger
- Department of Neurology, DKD Helios Klinik Wiesbaden, Wiesbaden, Germany
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Ferré P, Jarret J, Brambati S, Bellec P, Joanette Y. Functional Connectivity of Successful Picture-Naming: Age-Specific Organization and the Effect of Engaging in Stimulating Activities. Front Aging Neurosci 2020; 12:535770. [PMID: 33250759 PMCID: PMC7674930 DOI: 10.3389/fnagi.2020.535770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 10/05/2020] [Indexed: 11/13/2022] Open
Abstract
Aging is a lifelong process that starts at birth. Throughout the course of their life, individuals are exposed to various levels of stimulating activities. A higher level of engagement in such activities is suspected to protect against the normal course of cognitive aging or the cognitive manifestations of age-related brain diseases. However, the exact mechanism underlying such protective action remains unclear. The concept of the neurocognitive reserve was introduced to refer to the hypothesis that engagement in stimulating activities shapes brain structure and function, thus indirectly allowing for better preserved cognitive abilities. Although it is known that word production is among the best-preserved cognitive abilities in aging, the underlying neurofunctional mechanisms that allow this relative preservation are still unknown, and it is still unclear how engagement in stimulating activities affects these processes. The objective of this study is to describe the brain functional connectivity patterns associated with picture-naming abilities in younger and older adults with varying levels of engagement in stimulating activities, as a proxy for neurocognitive reserve. A mediation analysis was applied to determine whether the association between reserve proxies and naming accuracy is dependent on task FC. Results show that naming accuracy depends on the posterior cingulate cortex (PCC) functional decoupling in both younger and older adults but through different pathways. While high-performing older adults rely on the asynchronization of this area from motor speech regions’ activity, the best-performing younger adults rely on the functional decoupling with language-related regions. Mediation analysis reveals that the PCC decoupling mediates the relationship between the level of engagement in stimulating activities and naming accuracy in younger adults, but not in older adults. These findings suggest that reserve-related mechanisms may be more critical for naming in early adult life, while older adults’ neurofunctional organization may benefit more from a lifetime of acquired knowledge.
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Affiliation(s)
- Perrine Ferré
- Centre de Recherche de l’institut de Gériatrie de l’Université de Montréal (CRIUGM), Montréal, QC, Canada
- Département de Psychologie, Université de Montréal, Montréal, QC, Canada
- *Correspondence: Perrine Ferré
| | - Julien Jarret
- Centre de Recherche de l’institut de Gériatrie de l’Université de Montréal (CRIUGM), Montréal, QC, Canada
- Département de Psychologie, Université de Montréal, Montréal, QC, Canada
| | - Simona Brambati
- Centre de Recherche de l’institut de Gériatrie de l’Université de Montréal (CRIUGM), Montréal, QC, Canada
- Département de Psychologie, Université de Montréal, Montréal, QC, Canada
| | - Pierre Bellec
- Centre de Recherche de l’institut de Gériatrie de l’Université de Montréal (CRIUGM), Montréal, QC, Canada
- Département de Psychologie, Université de Montréal, Montréal, QC, Canada
| | - Yves Joanette
- Centre de Recherche de l’institut de Gériatrie de l’Université de Montréal (CRIUGM), Montréal, QC, Canada
- Département de Psychologie, Université de Montréal, Montréal, QC, Canada
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Delikishkina E, Lingnau A, Miceli G. Neural correlates of object and action naming practice. Cortex 2020; 131:87-102. [PMID: 32818916 DOI: 10.1016/j.cortex.2020.05.005] [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: 05/09/2019] [Revised: 11/26/2019] [Accepted: 05/11/2020] [Indexed: 01/05/2023]
Abstract
Word retrieval deficits are a common problem in patients with stroke-induced brain damage. While complete recovery of language in chronic aphasia is rare, patients' naming ability can be significantly improved by speech therapy. A growing number of neuroimaging studies have tried to pinpoint the neural changes associated with successful outcome of naming treatment. However, the mechanisms supporting naming practice in the healthy brain have received little attention. Yet, understanding these mechanisms is crucial for teasing them apart from functional reorganization following brain damage. To address this issue, we trained a group of healthy monolingual Italian speakers on naming pictured objects and actions for ten consecutive days and scanned them before and after training. Although activity during object versus action naming dissociated in several regions (lateral occipitotemporal, parietal and left inferior frontal cortices), training effects for the two word classes were similar and included activation decreases in classical language regions of the left hemisphere (posterior inferior frontal gyrus, anterior insula), potentially due to decreased lexical selection demands. Additionally, MVPA revealed training-related activation changes in the left parietal and temporal cortices associated with the retrieval of knowledge from episodic memory (precuneus, angular gyrus) and facilitated access to phonological word forms (posterior superior temporal sulcus).
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Affiliation(s)
- Ekaterina Delikishkina
- Center for Mind/Brain Sciences (CIMeC), University of Trento, Rovereto, TN, Italy; Department of Psychology, University of Arizona, Tucson, AZ, USA; International Doctorate for Experimental Approaches to Language and Brain (IDEALAB), Italy
| | - Angelika Lingnau
- Center for Mind/Brain Sciences (CIMeC), University of Trento, Rovereto, TN, Italy; Department of Psychology & Cognitive Science, University of Trento, Rovereto, TN, Italy; Institute of Psychology, University of Regensburg, Regensburg, Germany
| | - Gabriele Miceli
- Center for Mind/Brain Sciences (CIMeC), University of Trento, Rovereto, TN, Italy; Department of Psychology & Cognitive Science, University of Trento, Rovereto, TN, Italy; International Doctorate for Experimental Approaches to Language and Brain (IDEALAB), Italy; Centro Linceo Interdisciplinare 'Beniamino Segre', Accademia dei Lincei, Rome, Italy.
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7
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Paek EJ, Murray LL, Newman SD, Kim DJ. Test-retest reliability in an fMRI study of naming in dementia. BRAIN AND LANGUAGE 2019; 191:31-45. [PMID: 30807893 DOI: 10.1016/j.bandl.2019.02.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 12/18/2018] [Accepted: 02/12/2019] [Indexed: 06/09/2023]
Abstract
fMRI has been used as an outcome measure in dementia treatment studies, with many previous studies comparing only single pre- and post-treatment fMRI scans to determine treatment-induced neural changes, while utilizing single subject experimental designs. The purpose of the current study was to evaluate fMRI test-retest reliability in dementia patients and typical older adults using noun and verb confrontation naming to evaluate the validity of using a single pre/post-treatment scan comparison. Seven individuals with dementia and 9 control participants were tested three times over two months using the same fMRI procedures. Differences in individual and group level activation patterns were observed that varied across time. Additionally, the extent of variability fluctuated across individuals, groups, and the grammatical category of target words. Our findings suggested that one time fMRI scanning may inadequately represent an individual's typical brain activation pattern, particularly an individual with dementia. Thus, multiple imaging baselines are recommended.
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Affiliation(s)
- Eun Jin Paek
- Department of Audiology and Speech Pathology, University of Tennessee Health Science Center, Knoxville, TN 37996, United States.
| | - Laura L Murray
- School of Communication Sciences and Disorders, Western University, London, Ontario N6G 1H1, Canada.
| | - Sharlene D Newman
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47401, United States.
| | - Dae-Jin Kim
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47401, United States.
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Kurland J, Liu A, Stokes P. Effects of a Tablet-Based Home Practice Program With Telepractice on Treatment Outcomes in Chronic Aphasia. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2018; 61:1140-1156. [PMID: 29710115 PMCID: PMC6195077 DOI: 10.1044/2018_jslhr-l-17-0277] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 11/10/2017] [Accepted: 12/19/2017] [Indexed: 05/14/2023]
Abstract
Purpose The aim of this study was to determine if a tablet-based home practice program with weekly telepractice support could enable long-term maintenance of recent treatment gains and foster new language gains in poststroke aphasia. Method In a pre-post group study of home practice outcomes, 21 individuals with chronic aphasia were examined before and after a 6-month home practice phase and again at follow-up 4 months later. The main outcome measure studied was change in naming previously treated or untreated, practiced or unpracticed pictures of objects and actions. Individualized home practice programs were created in iBooks Author with semantic, phonemic, and orthographic cueing in pictures, words, and videos in order to facilitate naming of previously treated or untreated pictures. Results Home practice was effective for all participants with severity moderating treatment effects, such that individuals with the most severe aphasia made and maintained fewer gains. There was a negative relationship between the amount of training required for iPad proficiency and improvements on practiced and unpracticed pictures and a positive relationship between practice compliance and same improvements. Conclusion Unsupervised home practice with weekly video teleconferencing support is effective. This study demonstrates that even individuals with chronic severe aphasia, including those with no prior smart device or even computer experience, can attain independent proficiency to continue practicing and improving their language skills beyond therapy discharge. This could represent a low-cost therapy option for individuals without insurance coverage and/or those for whom mobility is an obstacle to obtaining traditional aphasia therapy.
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Affiliation(s)
- Jacquie Kurland
- Department of Communication Disorders, University of Massachusetts Amherst
| | - Anna Liu
- Department of Mathematics and Statistics, University of Massachusetts Amherst
| | - Polly Stokes
- Department of Communication Disorders, University of Massachusetts Amherst
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Kurland J, Liu A, Stokes P. Practice effects in healthy older adults: Implications for treatment-induced neuroplasticity in Aphasia. Neuropsychologia 2017; 109:116-125. [PMID: 29246487 DOI: 10.1016/j.neuropsychologia.2017.12.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 10/20/2017] [Accepted: 12/01/2017] [Indexed: 11/30/2022]
Abstract
In treating aphasic individuals with anomia, practice naming pictures leads to better performance as measured by accuracy and reaction time. The neurocognitive mechanisms supporting such improvements remain elusive, in part due to gaps in understanding the influence of practice on neurotypical older adults. The current study investigated the influence of practice naming one set of low frequency pictures of actions and objects in 18 healthy older adults, ten of whom were tested twice approximately one month apart. Both item and task practice effects were observed in improved accuracy and response latencies naming pictures in the scanner. This same facilitation effect was observed in neuroimaging results. For example, a significant main effect of practice was observed in bilateral precuneus and left inferior parietal lobule, characterized by greater activity for naming practiced vs. unpracticed pictures. This difference was significantly diminished in subsequent runs after exposure to unpracticed pictures. Whole brain analyses across two sessions showed that practice effects were specific to practice, i.e., there were not similar observable changes in contrasts examining actions vs. objects over time. These findings have important implications for understanding treatment-induced neuroplasticity in anomia treatment.
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Affiliation(s)
- Jacquie Kurland
- University of Massachusetts Amherst, Department of Communication Disorders, United States.
| | - Anna Liu
- University of Massachusetts Amherst, Department of Mathematics and Statistics, United States
| | - Polly Stokes
- University of Massachusetts Amherst, Department of Communication Disorders, United States
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10
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Vermeulen MCM, van der Heijden KB, Benjamins JS, Swaab H, van Someren EJW. Memory effects of sleep, emotional valence, arousal and novelty in children. J Sleep Res 2017; 26:309-317. [PMID: 28251722 DOI: 10.1111/jsr.12506] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 12/23/2016] [Indexed: 11/29/2022]
Abstract
Effectiveness of memory consolidation is determined by multiple factors, including sleep after learning, emotional valence, arousal and novelty. Few studies investigated how the effect of sleep compares with (and interacts with) these other factors, of which virtually none are in children. The present study did so by repeated assessment of declarative memory in 386 children (45% boys) aged 9-11 years through an online word-pair task. Children were randomly assigned to either a morning or evening learning session of 30 unrelated word-pairs with positive, neutral or negative valenced cues and neutral targets. After immediately assessing baseline recognition, delayed recognition was recorded either 12 or 24 h later, resulting in four different assessment schedules. One week later, the procedure was repeated with exactly the same word-pairs to evaluate whether effects differed for relearning versus original novel learning. Mixed-effect logistic regression models were used to evaluate how the probability of correct recognition was affected by sleep, valence, arousal, novelty and their interactions. Both immediate and delayed recognition were worse for pairs with negatively valenced or less arousing cue words. Relearning improved immediate and delayed word-pair recognition. In contrast to these effects, sleep did not affect recognition, nor did sleep moderate the effects of arousal, valence and novelty. The findings suggest a robust inclination of children to specifically forget the pairing of words to negatively valenced cue words. In agreement with a recent meta-analysis, children seem to depend less on sleep for the consolidation of information than has been reported for adults, irrespective of the emotional valence, arousal and novelty of word-pairs.
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Affiliation(s)
- Marije C M Vermeulen
- Department of Sleep and Cognition, Netherlands Institute for Neuroscience, Royal Netherlands Society for Arts and Sciences, Amsterdam, The Netherlands.,Department of Clinical Child and Adolescent Studies, Institute of Education and Child Studies, Leiden University, Leiden, The Netherlands
| | - Kristiaan B van der Heijden
- Department of Clinical Child and Adolescent Studies, Institute of Education and Child Studies, Leiden University, Leiden, The Netherlands.,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
| | - Jeroen S Benjamins
- Department of Sleep and Cognition, Netherlands Institute for Neuroscience, Royal Netherlands Society for Arts and Sciences, Amsterdam, The Netherlands.,Departments of Experimental Psychology and Social, Health and Organisational Psychology, Utrecht University, Utrecht, The Netherlands
| | - Hanna Swaab
- Department of Clinical Child and Adolescent Studies, Institute of Education and Child Studies, Leiden University, Leiden, The Netherlands.,Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands
| | - Eus J W van Someren
- Department of Sleep and Cognition, Netherlands Institute for Neuroscience, Royal Netherlands Society for Arts and Sciences, Amsterdam, The Netherlands.,Departments of Integrative Neurophysiology and Psychiatry, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, VU University & Medical Center, Amsterdam, The Netherlands
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11
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de Aguiar V, Bastiaanse R, Miceli G. Improving Production of Treated and Untreated Verbs in Aphasia: A Meta-Analysis. Front Hum Neurosci 2016; 10:468. [PMID: 27708568 PMCID: PMC5030301 DOI: 10.3389/fnhum.2016.00468] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 09/06/2016] [Indexed: 12/04/2022] Open
Abstract
Background: Demographic and clinical predictors of aphasia recovery have been identified in the literature. However, little attention has been devoted to identifying and distinguishing predictors of improvement for different outcomes, e.g., production of treated vs. untreated materials. These outcomes may rely on different mechanisms, and therefore be predicted by different variables. Furthermore, treatment features are not typically accounted for when studying predictors of aphasia recovery. This is partly due to the small numbers of cases reported in studies, but also to limitations of data analysis techniques usually employed. Method: We reviewed the literature on predictors of aphasia recovery, and conducted a meta-analysis of single-case studies designed to assess the efficacy of treatments for verb production. The contribution of demographic, clinical, and treatment-related variables was assessed by means of Random Forests (a machine-learning technique used in classification and regression). Two outcomes were investigated: production of treated (for 142 patients) and untreated verbs (for 166 patients). Results: Improved production of treated verbs was predicted by a three-way interaction of pre-treatment scores on tests for verb comprehension and word repetition, and the frequency of treatment sessions. Improvement in production of untreated verbs was predicted by an interaction including the use of morphological cues, presence of grammatical impairment, pre-treatment scores on a test for noun comprehension, and frequency of treatment sessions. Conclusion: Improvement in the production of treated verbs occurs frequently. It may depend on restoring access to and/or knowledge of lexeme representations, and requires relative sparing of semantic knowledge (as measured by verb comprehension) and phonological output abilities (including working memory, as measured by word repetition). Improvement in the production of untreated verbs has not been reported very often. It may depend on the nature of impaired language representations, and the type of knowledge engaged by treatment: it is more likely to occur where abstract features (semantic and/or grammatical) are damaged and treated.
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Affiliation(s)
- Vânia de Aguiar
- Department of Clinical Speech and Language Studies, Trinity College DublinDublin, Ireland; Center for Language and Cognition Groningen, University of GroningenGroningen, Netherlands; Center for Mind/Brain Sciences, University of TrentoRovereto, Italy
| | - Roelien Bastiaanse
- Center for Language and Cognition Groningen, University of Groningen Groningen, Netherlands
| | - Gabriele Miceli
- Center for Mind/Brain Sciences, University of Trento Rovereto, Italy
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12
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Magon S, Donath L, Gaetano L, Thoeni A, Radue EW, Faude O, Sprenger T. Striatal functional connectivity changes following specific balance training in elderly people: MRI results of a randomized controlled pilot study. Gait Posture 2016; 49:334-339. [PMID: 27479219 DOI: 10.1016/j.gaitpost.2016.07.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 07/12/2016] [Accepted: 07/15/2016] [Indexed: 02/08/2023]
Abstract
BACKGROUND Practice-induced effects of specific balance training on brain structure and activity in elderly people are largely unknown. AIM In the present study, we investigated morphological and functional brain changes following slacking training (balancing over nylon ribbons) in a group of elderly people. METHODS Twenty-eight healthy volunteers were recruited and randomly assigned to the intervention (mean age: 62.3±5.4years) or control group (mean age: 61.8±5.3years). The intervention group completed six-weeks of slackline training. Brain morphological changes were investigated using voxel-based morphometry and functional connectivity changes were computed via independent component analysis and seed-based analyses. All analyses were applied to the whole sample and to a subgroup of participants who improved in slackline performance. RESULTS The repeated measures analysis of variance showed a significant interaction effect between groups and sessions. Specifically, the Tukey post-hoc analysis revealed a significantly improved slackline standing performance after training for the left leg stance time (pre: 4.5±3.6s vs. 26.0±30.0s, p<0.038) as well as for tandem stance time (pre: 1.4±0.6s vs. post: 4.5±4.0s, p=0.003) in the intervention group. No significant changes in balance performance were observed in the control group. The MRI analysis did not reveal morphological or functional connectivity differences before or after the training between the intervention and control groups (whole sample). However, subsequent analysis in subjects with improved slackline performance showed a decrease of connectivity between the striatum and other brain areas during the training period. CONCLUSION These preliminary results suggest that improved balance performance with slackline training goes along with an increased efficiency of the striatal network.
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Affiliation(s)
- Stefano Magon
- Department of Neurology, University Hospital Basel, Switzerland; Medical Image Analysis Center, University Hospital Basel, Switzerland.
| | - Lars Donath
- Department of Sport, Exercise and Health, University of Basel, Switzerland
| | - Laura Gaetano
- Department of Neurology, University Hospital Basel, Switzerland; Medical Image Analysis Center, University Hospital Basel, Switzerland
| | - Alain Thoeni
- Medical Image Analysis Center, University Hospital Basel, Switzerland
| | | | - Oliver Faude
- Department of Sport, Exercise and Health, University of Basel, Switzerland
| | - Till Sprenger
- Department of Neurology, University Hospital Basel, Switzerland; Department of Neurology, DKD Helios Klinik Wiesbaden, Wiesbaden, Germany
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Grey Matter Density Predicts the Improvement of Naming Abilities After tDCS Intervention in Agrammatic Variant of Primary Progressive Aphasia. Brain Topogr 2016; 29:738-51. [DOI: 10.1007/s10548-016-0494-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 05/07/2016] [Indexed: 12/22/2022]
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14
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This is your brain on Scrabble: Neural correlates of visual word recognition in competitive Scrabble players as measured during task and resting-state. Cortex 2016; 75:204-219. [DOI: 10.1016/j.cortex.2015.03.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 12/16/2014] [Accepted: 03/23/2015] [Indexed: 11/20/2022]
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15
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MacDonald AD, Heath S, McMahon KL, Nickels L, Angwin AJ, van Hees S, Johnson K, Copland DA. Neuroimaging the short- and long-term effects of repeated picture naming in healthy older adults. Neuropsychologia 2015; 75:170-8. [PMID: 26071256 DOI: 10.1016/j.neuropsychologia.2015.06.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 05/18/2015] [Accepted: 06/05/2015] [Indexed: 11/15/2022]
Abstract
Repeated attempts to name pictures can improve subsequent naming for aphasic individuals with anomia, however, the neurocognitive mechanisms responsible for such improvements are unknown. This study investigated repeated picture naming in healthy older adults over a period of minutes (short-term) after one repetition and a period of days (long-term) after multiple repetitions. Compared to unprimed pictures, both repeated conditions showed faster naming latencies with the fastest latencies evident for the short-term condition. Neuroimaging results identified repetition suppression effects across three left inferior frontal gyrus regions of interest: for both the short- and long-term conditions in the pars orbitalis, and for long-term items in the pars triangularis and pars opercularis regions. The whole brain analysis also showed a repetition suppression effect in bilateral pars triangularis regions for the long-term condition. These findings within the inferior frontal gyrus suggest that effects of repeated naming may be driven by a mapping mechanism across multiple levels of representation, possibly reflecting different levels of learning, and lend support to the idea that processing may be hierarchically organised in the left inferior frontal gyrus. The whole brain analysis also revealed repetition suppression for the long-term condition within the posterior portion of bilateral inferior temporal gyri, which may reflect attenuation of integration processes within this region following the learning of task-relevant information.
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Affiliation(s)
- Anna D MacDonald
- The University of Queensland, UQ Centre for Clinical Research, Brisbane, Australia; NHMRC Centre for Clinical Research Excellence in Aphasia Rehabilitation, Australia.
| | - Shiree Heath
- Macquarie University, ARC Centre of Excellence in Cognition and its Disorders, Department of Cognitive Science, Sydney, Australia.
| | - Katie L McMahon
- The University of Queensland, Centre for Advanced Imaging, Brisbane, Australia.
| | - Lyndsey Nickels
- NHMRC Centre for Clinical Research Excellence in Aphasia Rehabilitation, Australia; Macquarie University, ARC Centre of Excellence in Cognition and its Disorders, Department of Cognitive Science, Sydney, Australia.
| | - Anthony J Angwin
- NHMRC Centre for Clinical Research Excellence in Aphasia Rehabilitation, Australia; The University of Queensland, School of Health and Rehabilitation Sciences, Division of Speech Pathology, Brisbane, Australia.
| | - Sophia van Hees
- The University of Queensland, UQ Centre for Clinical Research, Brisbane, Australia; NHMRC Centre for Clinical Research Excellence in Aphasia Rehabilitation, Australia; The University of Queensland, School of Health and Rehabilitation Sciences, Division of Speech Pathology, Brisbane, Australia.
| | - Kori Johnson
- The University of Queensland, Centre for Advanced Imaging, Brisbane, Australia.
| | - David A Copland
- The University of Queensland, UQ Centre for Clinical Research, Brisbane, Australia; NHMRC Centre for Clinical Research Excellence in Aphasia Rehabilitation, Australia; The University of Queensland, School of Health and Rehabilitation Sciences, Division of Speech Pathology, Brisbane, Australia.
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16
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de Aguiar V, Paolazzi CL, Miceli G. tDCS in post-stroke aphasia: The role of stimulation parameters, behavioral treatment and patient characteristics. Cortex 2015; 63:296-316. [PMID: 25460496 DOI: 10.1016/j.cortex.2014.08.015] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Revised: 07/30/2014] [Accepted: 08/10/2014] [Indexed: 10/24/2022]
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