Intermuscular coherence in Parkinson's disease: relationship to bradykinesia.
We hypothesised that bradykinesia may be partly due to the failure of the corticomuscular system to engage in high frequency oscillatory activity in Parkinson's disease (PD). In healthy subjects such oscillations are evident in coherence between active muscles at 15--30 Hz. We therefore investi...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2001
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| _version_ | 1826257988723146752 |
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| author | Brown, P Marsden, J Defebvre, L Cassim, F Mazzone, P Oliviero, A Altibrandi, MG Di Lazzaro, V Limousin-Dowsey, P Fraix, V Odin, P Pollak, P |
| author_facet | Brown, P Marsden, J Defebvre, L Cassim, F Mazzone, P Oliviero, A Altibrandi, MG Di Lazzaro, V Limousin-Dowsey, P Fraix, V Odin, P Pollak, P |
| author_sort | Brown, P |
| collection | OXFORD |
| description | We hypothesised that bradykinesia may be partly due to the failure of the corticomuscular system to engage in high frequency oscillatory activity in Parkinson's disease (PD). In healthy subjects such oscillations are evident in coherence between active muscles at 15--30 Hz. We therefore investigated the effects of therapeutic stimulation of the basal ganglia on this coherence and related it to changes in bradykinesia in the contralateral arm. Increases in coherence at 15--30 Hz and improvements in bradykinesia upon stimulation were correlated (r = 0.564, p < 0.001). This suggests that the basal ganglia modulate oscillatory activity in the corticomuscular system and that impairment of the motor system's ability to engage in synchronised oscillations at high frequency may contribute to bradykinesia in PD. |
| first_indexed | 2024-03-06T18:26:54Z |
| format | Journal article |
| id | oxford-uuid:08492e55-d610-4880-8706-c78c0439d882 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:26:54Z |
| publishDate | 2001 |
| record_format | dspace |
| spelling | oxford-uuid:08492e55-d610-4880-8706-c78c0439d8822022-03-26T09:12:04ZIntermuscular coherence in Parkinson's disease: relationship to bradykinesia.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:08492e55-d610-4880-8706-c78c0439d882EnglishSymplectic Elements at Oxford2001Brown, PMarsden, JDefebvre, LCassim, FMazzone, POliviero, AAltibrandi, MGDi Lazzaro, VLimousin-Dowsey, PFraix, VOdin, PPollak, PWe hypothesised that bradykinesia may be partly due to the failure of the corticomuscular system to engage in high frequency oscillatory activity in Parkinson's disease (PD). In healthy subjects such oscillations are evident in coherence between active muscles at 15--30 Hz. We therefore investigated the effects of therapeutic stimulation of the basal ganglia on this coherence and related it to changes in bradykinesia in the contralateral arm. Increases in coherence at 15--30 Hz and improvements in bradykinesia upon stimulation were correlated (r = 0.564, p < 0.001). This suggests that the basal ganglia modulate oscillatory activity in the corticomuscular system and that impairment of the motor system's ability to engage in synchronised oscillations at high frequency may contribute to bradykinesia in PD. |
| spellingShingle | Brown, P Marsden, J Defebvre, L Cassim, F Mazzone, P Oliviero, A Altibrandi, MG Di Lazzaro, V Limousin-Dowsey, P Fraix, V Odin, P Pollak, P Intermuscular coherence in Parkinson's disease: relationship to bradykinesia. |
| title | Intermuscular coherence in Parkinson's disease: relationship to bradykinesia. |
| title_full | Intermuscular coherence in Parkinson's disease: relationship to bradykinesia. |
| title_fullStr | Intermuscular coherence in Parkinson's disease: relationship to bradykinesia. |
| title_full_unstemmed | Intermuscular coherence in Parkinson's disease: relationship to bradykinesia. |
| title_short | Intermuscular coherence in Parkinson's disease: relationship to bradykinesia. |
| title_sort | intermuscular coherence in parkinson s disease relationship to bradykinesia |
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