Abnormal task driven neural oscillations in multiple sclerosis: a visuomotor MEG study
Multiple sclerosis (MS) is a debilitating disease commonly attributed to degradation of white matter myelin. Symptoms include fatigue, as well as problems associated with vision and movement. Although areas of demyelination in white matter are observed routinely in patients undergoing MRI scans, suc...
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| Format: | Article |
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Wiley
2017
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| Online Access: | https://eprints.nottingham.ac.uk/40919/ |
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| author | Barratt, Eleanor L. Tewarie, Prejaas K. Clarke, Margareta A. Hall, Emma L. Gowland, Penny A. Morris, Peter G. Francis, Susan T. Evangelou, Nikos Brookes, Matthew J. |
| author_facet | Barratt, Eleanor L. Tewarie, Prejaas K. Clarke, Margareta A. Hall, Emma L. Gowland, Penny A. Morris, Peter G. Francis, Susan T. Evangelou, Nikos Brookes, Matthew J. |
| author_sort | Barratt, Eleanor L. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Multiple sclerosis (MS) is a debilitating disease commonly attributed to degradation of white matter myelin. Symptoms include fatigue, as well as problems associated with vision and movement. Although areas of demyelination in white matter are observed routinely in patients undergoing MRI scans, such measures are often a poor predictor of disease severity. For this reason, it is instructive to measure associated changes in brain function. Widespread white-matter demyelination may lead to delays of propagation of neuronal activity, and with its excellent temporal resolution, magnetoencephalography can be used to probe such delays in controlled conditions (e.g., during a task). In healthy subjects, responses to visuomotor tasks are well documented: in motor cortex, movement elicits a localised decrease in the power of beta band oscillations (event-related beta desynchronisation) followed by an increase above baseline on movement cessation (post-movement beta rebound (PMBR)). In visual cortex, visual stimulation generates increased gamma oscillations. In this study, we use a visuomotor paradigm to measure these responses in MS patients and compare them to age- and gender-matched healthy controls. We show a significant increase in the time-to-peak of the PMBR in patients which correlates significantly with the symbol digit modalities test: a measure of information processing speed. A significant decrease in the amplitude of visual gamma oscillations in patients is also seen. These findings highlight the potential value of electrophysiological imaging in generating a new understanding of visual disturbances and abnormal motor control in MS patients. |
| first_indexed | 2025-11-14T19:43:36Z |
| format | Article |
| id | nottingham-40919 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:43:36Z |
| publishDate | 2017 |
| publisher | Wiley |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-409192020-05-04T18:48:19Z https://eprints.nottingham.ac.uk/40919/ Abnormal task driven neural oscillations in multiple sclerosis: a visuomotor MEG study Barratt, Eleanor L. Tewarie, Prejaas K. Clarke, Margareta A. Hall, Emma L. Gowland, Penny A. Morris, Peter G. Francis, Susan T. Evangelou, Nikos Brookes, Matthew J. Multiple sclerosis (MS) is a debilitating disease commonly attributed to degradation of white matter myelin. Symptoms include fatigue, as well as problems associated with vision and movement. Although areas of demyelination in white matter are observed routinely in patients undergoing MRI scans, such measures are often a poor predictor of disease severity. For this reason, it is instructive to measure associated changes in brain function. Widespread white-matter demyelination may lead to delays of propagation of neuronal activity, and with its excellent temporal resolution, magnetoencephalography can be used to probe such delays in controlled conditions (e.g., during a task). In healthy subjects, responses to visuomotor tasks are well documented: in motor cortex, movement elicits a localised decrease in the power of beta band oscillations (event-related beta desynchronisation) followed by an increase above baseline on movement cessation (post-movement beta rebound (PMBR)). In visual cortex, visual stimulation generates increased gamma oscillations. In this study, we use a visuomotor paradigm to measure these responses in MS patients and compare them to age- and gender-matched healthy controls. We show a significant increase in the time-to-peak of the PMBR in patients which correlates significantly with the symbol digit modalities test: a measure of information processing speed. A significant decrease in the amplitude of visual gamma oscillations in patients is also seen. These findings highlight the potential value of electrophysiological imaging in generating a new understanding of visual disturbances and abnormal motor control in MS patients. Wiley 2017-05-31 Article PeerReviewed Barratt, Eleanor L., Tewarie, Prejaas K., Clarke, Margareta A., Hall, Emma L., Gowland, Penny A., Morris, Peter G., Francis, Susan T., Evangelou, Nikos and Brookes, Matthew J. (2017) Abnormal task driven neural oscillations in multiple sclerosis: a visuomotor MEG study. Human Brain Mapping, 38 (5). pp. 2441-2453. ISSN 1097-0193 multiple sclerosis; post-movement beta rebound; visual gamma; MEG; visuomotor abnormalities; neuronal oscillations http://onlinelibrary.wiley.com/doi/10.1002/hbm.23531/abstract doi:10.1002/hbm.23531 doi:10.1002/hbm.23531 |
| spellingShingle | multiple sclerosis; post-movement beta rebound; visual gamma; MEG; visuomotor abnormalities; neuronal oscillations Barratt, Eleanor L. Tewarie, Prejaas K. Clarke, Margareta A. Hall, Emma L. Gowland, Penny A. Morris, Peter G. Francis, Susan T. Evangelou, Nikos Brookes, Matthew J. Abnormal task driven neural oscillations in multiple sclerosis: a visuomotor MEG study |
| title | Abnormal task driven neural oscillations in multiple sclerosis: a visuomotor MEG study |
| title_full | Abnormal task driven neural oscillations in multiple sclerosis: a visuomotor MEG study |
| title_fullStr | Abnormal task driven neural oscillations in multiple sclerosis: a visuomotor MEG study |
| title_full_unstemmed | Abnormal task driven neural oscillations in multiple sclerosis: a visuomotor MEG study |
| title_short | Abnormal task driven neural oscillations in multiple sclerosis: a visuomotor MEG study |
| title_sort | abnormal task driven neural oscillations in multiple sclerosis: a visuomotor meg study |
| topic | multiple sclerosis; post-movement beta rebound; visual gamma; MEG; visuomotor abnormalities; neuronal oscillations |
| url | https://eprints.nottingham.ac.uk/40919/ https://eprints.nottingham.ac.uk/40919/ https://eprints.nottingham.ac.uk/40919/ |