Pre‐ and postcentral cortical somatosensory evoked potentials in hemiparkinsonism
- 1 January 1993
- journal article
- research article
- Published by Wiley in Movement Disorders
- Vol. 8 (4) , 430-436
- https://doi.org/10.1002/mds.870080403
Abstract
We recorded cortical frontal, central, and parietal somatosensory evoked potentials (SEPs) in 9 patients with hemiparkinsonism and in a group of 25 healthy volunteers. No differences were observed in the SEPs recorded after stimulation of the asymptomatic and symptomatic sides in the patients. Likewise, comparison with the healthy controls did not reveal significant group differences or abnormal waveforms in the patients. Even frontal N30 deflection, which has been reported to be diminished in Parkinson's disease (PD), was normal and symmetric in the patients. Therefore, no evidence was found for altered sensory input to the motor or premotor and supplementary motor cortices in PD.Keywords
This publication has 25 references indexed in Scilit:
- Recovery functions of somatosensory evoked potentials in parkinsonian patientsJournal of the Neurological Sciences, 1992
- Gating of the early components of the frontal and parietal somatosensory evoked potentials in different sensory-motor interference modalitiesElectroencephalography and Clinical Neurophysiology/Evoked Potentials Section, 1991
- Mapping study of somatosensory evoked potentials during selective spatial attentionElectroencephalography and Clinical Neurophysiology/Evoked Potentials Section, 1991
- Modification of cortical somatosensory evoked potentials during tactile exploration and simple active and passive movementsElectroencephalography and Clinical Neurophysiology/Evoked Potentials Section, 1991
- Age-dependent decline in motor evoked potential (MEP) amplitude: with a comment on changes in Parkinson's diseaseElectroencephalography and Clinical Neurophysiology/Evoked Potentials Section, 1991
- Abnormalities of short-latency somatosensory evoked potentials in parkinsonian patientsElectroencephalography and Clinical Neurophysiology/Evoked Potentials Section, 1989
- Centrifugal and centripetal mechanisms involved in the ‘gating’ of cortical SEPs during movementElectroencephalography and Clinical Neurophysiology/Evoked Potentials Section, 1988
- Defective Utilization of Sensory Input as the Basis for Bradykinesia, Rigidity and Decreased Movement Repertoire in Parkinson’s Disease: A HypothesisCanadian Journal of Neurological Sciences, 1984
- Topography of somatosensory evoked potentials after stimulation of the median nerveElectroencephalography and Clinical Neurophysiology/Evoked Potentials Section, 1984
- Evidence for abnormal long-loop reflexes in rigid Parkinsonian patientsBrain Research, 1975