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Imaging Studies in Focal Dystonias: A Systems Level Approach to Studying a Systems Level Disorder
Focal dystonias are dystonias that affect one part of the body, and are sometimes task-specific. Brain imaging and transcranial magnetic stimulation techniques have been valuable in defining the pathophysiology of dystonias in general, and are particularly amenable to studying focal dystonias. Over...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Bentham Science Publishers
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3580788/ https://www.ncbi.nlm.nih.gov/pubmed/23814533 http://dx.doi.org/10.2174/157015913804999513 |
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author | Blood, Anne J |
author_facet | Blood, Anne J |
author_sort | Blood, Anne J |
collection | PubMed |
description | Focal dystonias are dystonias that affect one part of the body, and are sometimes task-specific. Brain imaging and transcranial magnetic stimulation techniques have been valuable in defining the pathophysiology of dystonias in general, and are particularly amenable to studying focal dystonias. Over the past few years, several common themes have emerged in the imaging literature, and this review summarizes these findings and suggests some ways in which these distinct themes might all point to one common systems-level mechanism for dystonia. These themes include (1) the role of premotor regions in focal dystonia, (2) the role of the sensory system and sensorimotor integration in focal dystonia, (3) the role of decreased inhibition/increased excitation in focal dystonia, and (4) the role of brain imaging in evaluating and guiding treatment of focal dystonias. The data across these themes, together with the features of dystonia itself, are consistent with a hypothesis that all dystonias reflect excessive output of postural control/stabilization systems in the brain, and that the mechanisms for dystonia reflect amplification of an existing functional system, rather than recruitment of the wrong motor programs. Imaging is currently being used to test treatment effectiveness, and to visually guide treatment of dystonia, such as placement of deep brain stimulation electrodes. In the future, it is hoped that imaging may be used to individualize treatments across behavioral, pharmacologic, and surgical domains, thus optimizing both the speed and effectiveness of treatment for any given individual with focal dystonia. |
format | Online Article Text |
id | pubmed-3580788 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Bentham Science Publishers |
record_format | MEDLINE/PubMed |
spelling | pubmed-35807882013-07-01 Imaging Studies in Focal Dystonias: A Systems Level Approach to Studying a Systems Level Disorder Blood, Anne J Curr Neuropharmacol Article Focal dystonias are dystonias that affect one part of the body, and are sometimes task-specific. Brain imaging and transcranial magnetic stimulation techniques have been valuable in defining the pathophysiology of dystonias in general, and are particularly amenable to studying focal dystonias. Over the past few years, several common themes have emerged in the imaging literature, and this review summarizes these findings and suggests some ways in which these distinct themes might all point to one common systems-level mechanism for dystonia. These themes include (1) the role of premotor regions in focal dystonia, (2) the role of the sensory system and sensorimotor integration in focal dystonia, (3) the role of decreased inhibition/increased excitation in focal dystonia, and (4) the role of brain imaging in evaluating and guiding treatment of focal dystonias. The data across these themes, together with the features of dystonia itself, are consistent with a hypothesis that all dystonias reflect excessive output of postural control/stabilization systems in the brain, and that the mechanisms for dystonia reflect amplification of an existing functional system, rather than recruitment of the wrong motor programs. Imaging is currently being used to test treatment effectiveness, and to visually guide treatment of dystonia, such as placement of deep brain stimulation electrodes. In the future, it is hoped that imaging may be used to individualize treatments across behavioral, pharmacologic, and surgical domains, thus optimizing both the speed and effectiveness of treatment for any given individual with focal dystonia. Bentham Science Publishers 2013-01 2013-01 /pmc/articles/PMC3580788/ /pubmed/23814533 http://dx.doi.org/10.2174/157015913804999513 Text en ©2013 Bentham Science Publishers http://creativecommons.org/licenses/by/2.5/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.5/), which permits unrestrictive use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Article Blood, Anne J Imaging Studies in Focal Dystonias: A Systems Level Approach to Studying a Systems Level Disorder |
title | Imaging Studies in Focal Dystonias: A Systems Level Approach to Studying a Systems Level Disorder |
title_full | Imaging Studies in Focal Dystonias: A Systems Level Approach to Studying a Systems Level Disorder |
title_fullStr | Imaging Studies in Focal Dystonias: A Systems Level Approach to Studying a Systems Level Disorder |
title_full_unstemmed | Imaging Studies in Focal Dystonias: A Systems Level Approach to Studying a Systems Level Disorder |
title_short | Imaging Studies in Focal Dystonias: A Systems Level Approach to Studying a Systems Level Disorder |
title_sort | imaging studies in focal dystonias: a systems level approach to studying a systems level disorder |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3580788/ https://www.ncbi.nlm.nih.gov/pubmed/23814533 http://dx.doi.org/10.2174/157015913804999513 |
work_keys_str_mv | AT bloodannej imagingstudiesinfocaldystoniasasystemslevelapproachtostudyingasystemsleveldisorder |