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THE BEREITSCHAFTSPOTENTIAL IS ABNORMAL IN PARKINSON'S DISEASE
Abstract
The average Bereitschaftspotential (BP) preceding a rapid, self-paced voluntary extension movement of the index finger was recorded from 6 scalp locations in 14 patients with Parkinson's disease who had been withdrawn from their normal drug therapy for at least 12 h before testing. The amplitude of the potential was measured at the peak negativity (N1) and 650 ms prior to this (NS1), and compared with that recorded in a group of 12 age-matched control subjects. The N1 amplitude was the same as in the normals, but the NS1 component was smaller in the patients, especially in midline leads. As a result, the rise in the BP between the peak NS1 and N1 component (termed NS2) was larger in the patient group. The NS1 component of the BP is thought to reflect preparatory activity in the supplementary motor area (SMA) of cortex. Since the basal ganglia provide a major source of afferent input to SMA, the reduction in NS1 in the patients probably results from inadequate basal ganglia activation of SMA. The larger NS2 component may reflect extra activity in other brain areas to compensate for the reduced SMA activity.
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Citations
Cited by
What is the Bereitschaftspotential?
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Brunia, C. H. M., & van Boxtel, G. J. M. (2001) · International Journal of Psychophysiology · doi:10.1016/s0167-8760(01)00179-9 · Cited by 721
Williams, D. (2002) · Brain · doi:10.1093/brain/awf156 · Cited by 513
Event-related functional magnetic resonance imaging in Parkinson's disease before and after levodopa
Haslinger, B., Erhard, P., Kämpfe, N., Boecker, H., Rummeny, E., Schwaiger, M., Conrad, B., & Ceballos-Baumann, A. O. (2001) · Brain · doi:10.1093/brain/124.3.558 · Cited by 486
Metadata
- Authors
- DICK, J. P. R., ROTHWELL, J. C., DAY, B. L., CANTELLO, R., BURUMA, O., GIOUX, M., BENECKE, R., BERARDELLI, A., THOMPSON, P. D., & MARSDEN, C. D.
- Venue
- Brain
- Publisher
- Oxford University Press (OUP)
- Published
- 1989
- Volume
- 112
- Issue
- 1
- Pages
- 233-244
- ISSN
- 0006-8950 (ISSN-L)
- 1460-2156
- OpenAlex
- W2151875718
- Cited by
- 268
- References
- 0
- FWCI
- 7.48
- Type
- journal article
- Language
- en
- Open access
- closed
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- DICK, J. P. R., ROTHWELL, J. C., DAY, B. L., CANTELLO, R., BURUMA, O., GIOUX, M., BENECKE, R., BERARDELLI, A., THOMPSON, P. D., & MARSDEN, C. D. (1989). THE BEREITSCHAFTSPOTENTIAL IS ABNORMAL IN PARKINSON'S DISEASE. Brain. https://doi.org/10.1093/brain/112.1.233
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
