Periodicities in physiological activity at puberty in the female rat

Gary C. Sieck, Ronald M. Harper, Anna N. Taylor

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Periodicities in physiological activity were examined in young female rats prior to and at puberty. At least three distinct periodicities in these data were observed: (i) light: dark differences in the occurrence of wakefulness (W) and quiet sleep (QS); (ii) a 90-min cycle between behavioral sleep and wakefulness; and (iii) a 10 to 20-min rhythm possibly reflecting an active sleep cycle. These periodicities included changes in EEG and EMG amplitude, somatic activity, heart rate, and variability in heart rate. The changes in sleep-waking states at puberty (either spontaneous or precociously induced) did not result in any marked changes in either the 10 to 20-min or 90-min rhythms.

Original languageEnglish (US)
Pages (from-to)421-431
Number of pages11
JournalExperimental Neurology
Issue number2
StatePublished - Sep 1 1978

ASJC Scopus subject areas

  • Neurology
  • Developmental Neuroscience


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