PSYA01H3 Lecture Notes - Lecture 16: Rapid Eye Movement Sleep, Sleep Spindle, Swim Cap
Document Summary
Normal consciousness can be altered by sleep, hypnosis, drugs & sensory deprivation. Chapter 5. 1: biological rhythms of consciousness: wakefulness & sleep. Biological rhythms: patterns that cycle within days, weeks, months, or years. Infradian rhythm: any rhythm that lasts longer than a day ex. Menstrual cycle: circannual rhythm: a yearly cycle ex. Circadian rhythm: daily cycles affecting physiological & behavioural processes ex. Sleep, hunger, concentration: our circadian rhythms are regulated by daylight interacting with our nervous & endocrine systems. Entrainment: when biological rhythms become synched to external cues ex. light, temp. or a clock. Endogenous rhythms: biological rhythms that are generated by our body independent of external cues ex. Light: our sleep-wake cycles remains close to 24 hours throughout life, but the amount of rem sleep we need as get older decreases. Polysomnography: a set of objective measurements used to examine physiological variables during sleep ex. Wednesday october 28, 2015 resembles wakefulness even though we"re asleep where dreaming occurs.
