exogenous zeitgabers Flashcards
1
Q
define exogenouse zeitgabers
A
– external factors that affect or entrain our biological rhythms, such as the influence of light on the sleep/wake cycle.
2
Q
what do zeitgabers do
A
reset the sleep/wake cycle: an interaction of internal and external factors.
3
Q
what is a key exogenous zeitgaber
A
Light
reset the body’s main endogenous pacemaker (SCN)
4
Q
who studied light affecting exogenous zeitgabers
A
Campbell and Murphy (1998)
woke 15 participants at various times and shone a light on the backs of their knees
5
Q
what dose Campbell and Murpheys study suggest
A
that light is a powerful exogenous zeitgeber detected by skin receptor sites and does not necessarily rely on the eyes to influence the SCN.
