1
Q
functions of sleep
A
Physical repair to return the body to a normal,
healthy state - healthy brain that functions normally
Emotional stability (feeling normal and
psychologically healthy)
Instinctive and necessary for survival (evolved behaviour)- keeps us safe at night
2
Q
sleep cycle
A
Stage 1 - 10%
Stage 2 - 50%
Stage 3 - 10%
Stage 4 - 10%
Rapid Eye Movement - 20%
3
Q
Endogenous pacemakers
A
internal biological clocks- manage circadian rhythms (e.g. Suprachiasmatic nucleus)
4
Q
Exogenous Zeitgebers
A
features of the environment that manage circadian rhythms (e.g. light)
5
Q
Hypothalamus
A
controls key bodily functions
6
Q
Melatonin
A
hormone that induces sleep. Released by
the pineal gland.
