Evidence for asynchronous development of sleep in cortical areas

Ivan N. Pigarev, Hans Christoph Nothdurft, Sabine Kastner

Research output: Contribution to journalArticlepeer-review

114 Scopus citations


We have recorded from extrastriate area V4 in monkeys performing a visual search task. When animals became tired or drowsy, responses to visual stimulation were often reduced or even completely blocked, and background activity changed to the burst-pause pattern typically seen in sleep. In spite of such neuronal sleep observed in V4, animals continued to perform the visual task, indicating that at least the primary visual cortex was still working. This observation shows that sleep does not develop simultaneously in all cortical areas but may affect some areas earlier than others. In particular conditions, local sleep of certain areas may be a stable and long-lasting phenomenon.

Original languageEnglish (US)
Pages (from-to)2557-2560
Number of pages4
Issue number11
StatePublished - 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Neuroscience


  • Area V4
  • Development of sleep
  • Monkey
  • Neuronal activity
  • Sleep
  • Visual cortex


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