Development of sleep and wakefulness patterns in the infant rhesus monkey

Experimental NeurologyPublished 1 July 1965

Gilbert W. Meier, Ralph J. Berger

DOI10.1016/0014-4886(65)90071-3

Source URL

Citations72

SJR quartileQ1

SJR score1.50

SNIP1.05

TL;DR

The uniqueness of the seventh day of postnatal life for the development of the infant monkey is further emphasized by the initial appearance at this age of a number of important behavioral responses.

Abstract

The sleep and wakefulness patterns of five neonatal rhesus monkeys were monitored by continuous polygraphic recording and compared with the animal's behavior until the infants were 1 month old. Similar observations and recordings were made for comparative purposes on three juveniles of 9–13 months of age. The three states of vigilance: wakefulness; high voltage, slow wave sleep (HVS); and low voltage, fast wave sleep (LVF) exist in the same form as characterized by the established polygraphic and behavioral patterns of the adult, although in varying temporal relations. For example, the rise from birth in the total sleep time and that proportion of it occupied by LVF persists until the seventh day of life. Thereafter, the total sleep time remains constant while the proportion of LVF declines into juvenile life. In addition, the mean durations of periods of wakefulness, sleep, HVS, and LVF show marked changes on this day. The uniqueness of the seventh day of postnatal life for the development of the infant monkey is further emphasized by the initial appearance at this age of a number of important behavioral responses.

Keywords

Neuroscience

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