Distance- and error-related discharge of cells in premotor cortex of rhesus monkeys

Didier Flament, Donna Onstott, Qing Gong Fu, Timothy J. Ebner

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Previous work on the premotor cortex has emphasized its role in preparation for movement. In this study, we concentrated on the activity that occurs during a movement, particularly when the required movement amplitude is unexpectedly changed by introduction of a visuo-spatial error. In two rhesus monkeys, discharge of premotor neurons was recorded during a multi-joint reaching movement. Units could be divided into two categories: (1) those whose discharge monotonically increased or decreased with movement amplitude; and (2) those whose discharge was modulated with the unexpected change in amplitude but not monotonically. We suggest that the latter class of cells may be detecting or responding to a visuo-motor error. Thus, the premotor cortex is not only involved in preparation but plays a role in the ongoing control of movement execution.

Original languageEnglish (US)
Pages (from-to)144-148
Number of pages5
JournalNeuroscience Letters
Volume153
Issue number2
DOIs
StatePublished - Apr 30 1993

Bibliographical note

Funding Information:
Supported in part by BNS8707572 and the Human Frontier Science Program.

Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.

Keywords

  • Error correction
  • Motor control
  • Movement amplitude
  • Premotor cortex
  • Rhesus monkey
  • Visuo spatial integration

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