Description

Heart rates for a sample of six tree shrews at each of three stages of sleep.

Format

A data frame with 18 observations on the following 4 variables.

ID

Row ID

Shrew

Shrew ID (A through F)

Phase

Phase of sleep (DSW=deep wave, LSW=light wave, or REM=dreaming)

Rate

Heart rate (beats per minute)

Details

Heart rates were recorded for a sample of six tree shrews at each of three stages of sleep.

Source

Berger, R. J. and Walker, J. M. (1972) "The Polygraphic Study of Sleep in the Tree Shrew," Brain, Behavior, and Evolution, v. 5, pp. 62