mammalsleep {faraway} | R Documentation |
Sleep in Mammals: Ecological and Constitutional Correlates
Description
The mammalsleep
data frame has 62 rows and 10 columns.
Sleep in Mammals: Ecological and Constitutional Correlates
Usage
data(mammalsleep)
Format
This data frame contains the following columns:
body
- body weight in kg
brain
- brain weight in g
nondream
- slow wave ("nondreaming") sleep (hrs/day)
dream
- paradoxical ("dreaming") sleep (hrs/day)
sleep
- total sleep (hrs/day) (sum of slow wave and paradoxical sleep)
lifespan
- maximum life span (years)
gestation
- gestation time (days)
predation
- predation index (1-5) 1 = minimum (least likely to be preyed upon) to
5 = maximum (most likely to be preyed upon)
exposure
- sleep exposure index (1-5)
1 = least exposed (e.g. animal sleeps in a
well-protected den)
5 = most exposed
danger
- overall danger index (1-5)
(based on the above two indices and other information)
1 = least danger (from other animals)
5 = most danger (from other animals)
Source
"Sleep in
Mammals: Ecological and Constitutional Correlates" by Allison, T. and
Cicchetti, D. (1976), Science, November 12, vol. 194, pp. 732-734.
[Package
faraway version 1.0.4
Index]