DISTANCE-RELATED AND ERROR-RELATED DISCHARGE OF CELLS IN PREMOTOR CORTEX OF RHESUS-MONKEYS

Citation
D. Flament et al., DISTANCE-RELATED AND ERROR-RELATED DISCHARGE OF CELLS IN PREMOTOR CORTEX OF RHESUS-MONKEYS, Neuroscience letters, 153(2), 1993, pp. 144-148
Citations number
25
Categorie Soggetti
Neurosciences
Journal title
ISSN journal
03043940
Volume
153
Issue
2
Year of publication
1993
Pages
144 - 148
Database
ISI
SICI code
0304-3940(1993)153:2<144:DAEDOC>2.0.ZU;2-C
Abstract
Previous work on the premotor cortex has emphasized its role in prepar ation for movement. In this study, we concentrated on the activity tha t occurs during a movement, particularly when the required movement am plitude is unexpectedly changed by introduction of a visuo-spatial err or. In two rhesus monkeys, discharge of premotor neurons was recorded during a multi-joint reaching movement. Units could be divided into tw o categories: (1) those whose discharge monotonically increased or dec reased with movement amplitude; and (2) those whose discharge was modu lated with the unexpected change in amplitude but not monotonically. W e suggest that the latter class of cells may be detecting or respondin g to a visuo-motor error. Thus, the premotor cortex is not only involv ed in preparation but plays a role in the ongoing control of movement execution.