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Heart rates for a sample of six tree shrews at each of three stages of sleep.
A data frame with 18 observations on the following 4 variables.
ID
Row ID
Shrew
Shrew ID (A through F)
A
F
Phase
Phase of sleep (DSW=deep wave, LSW=light wave, or REM=dreaming)
DSW
LSW
REM
Rate
Heart rate (beats per minute)
Heart rates were recorded for a sample of six tree shrews at each of three stages of sleep.