Circadian Rhythms (AQA A-Level Psychology): Flashcards
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Circadian rhythms definition
Circadian rhythms definition
Biological rhythms that follow ~24-hour cycles, regulating body processes
Endogenous pacemakers
Endogenous pacemakers
Internal body clocks
Exogenous zeitgebers
Exogenous zeitgebers
External environmental cues/changes
Latin origin of 'circadian'
Latin origin of 'circadian'
'Circa' (about) + 'diem' (day)
Free-running
Free-running
Biological clocks operating without external stimuli
Siffre's free-running rhythm length
Siffre's free-running rhythm length
Approximately 25 hours
Desynchronisation
Desynchronisation
Disruption of circadian rhythms
Circadian trough timing for night workers
Circadian trough timing for night workers
Around 6am - reduced concentration
Shift workers' heart disease risk
Shift workers' heart disease risk
Three times more likely
'Larks' vs 'owls'
'Larks' vs 'owls'
Early vs late sleep/wake preferences