Entrainment of the circadian rhythm of wheel-running activity is phase shifted by ablation of the intergeniculate leaflet

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Abstract

The phase angle of entrainment of golden hamster wheel-running activity was determined before and after bilateral destruction of the intergeniculate leaflet (IGL). Animals were maintained under continuous dim light which rhythmically varied in intensity (10-5 lux) in the form of a sine wave with a 24 h period. The phase angle of entrainment changed significantly following IGL ablation suggesting a role for the IGL in entrainment.

Original languageEnglish (US)
Pages (from-to)151-154
Number of pages4
JournalBrain Research
Volume494
Issue number1
DOIs
StatePublished - Aug 7 1989

Keywords

  • Entrainment
  • Intergeniculate leaflet
  • Sinusoidal light cycle

ASJC Scopus subject areas

  • Neuroscience(all)
  • Molecular Biology
  • Clinical Neurology
  • Developmental Biology

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