Representation of the temporal order of visual objects in the primate lateral prefrontal cortex

Yoshihisa Ninokura, Hajime Mushiake, Jun Tanji

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

Recollecting a past episode involves remembering the temporal order of events. We studied cellular activity in the lateral prefrontal cortex (PFC) of two monkeys that were required to remember the temporal order in which visual objects appeared and to reach for each object in the same order after a delay. Here, we report the cellular activity in the lateral PFC, focusing on the delay period. We found that 43% of the delay-period activity was selective for the sequence in which the visual objects were presented during the cue period. While the majority of cellular activity was selective for multiple sequences, some cells (31%) were selective for only one of six sequences. Our findings show that PFC cells are involved in holding temporal order information when that information is necessary for planning forthcoming motor behavior.

Original languageEnglish
Pages (from-to)2868-2873
Number of pages6
JournalJournal of Neurophysiology
Volume89
Issue number5
DOIs
Publication statusPublished - 2003 May 1

ASJC Scopus subject areas

  • Neuroscience(all)
  • Physiology

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