Movement-related potentials associated with single and repetitive movements recorded from human supplementary motor area.
To clarify the differences of movement-related potentials (MRPs) between single and repetitive movements, MRPs with finger movements were recorded from subdural electrodes chronically implanted on the supplementary motor area (SMA) in 2 patients, and MRPs with foot movements were recorded simultaneously from the SMA and the primary motor foot area in 1 patient. Repetitive movements did not elicit larger pre-movement potentials in the SMA as compared with single movements in all 3 patients. In the negative motor area, where electrical stimulation elicited inhibitory responses of voluntary movements and which is located at the rostral part of the SMA, pre-movement potentials to either single or repetitive movements were of approximately equal amplitude in 1 out of 3 patients. It is, therefore, most likely that the SMA plays an equally significant role in preparation for single and repetive voluntary movements.
Ikeda
A
A
Department of Neurology, Cleveland Clinic Foundation, OH 44106.
Lüders
H O
HO
Burgess
R C
RC
Shibasaki
H
H
D000328:Adult; D001931:Brain Mapping; D004576:Electromyography; D004827:Epilepsy / Q000503:physiopathology; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009044:Motor Cortex / Q000503:physiopathology*; D009068:Movement / Q000502:physiology*