PSYA01H3 Chapter Notes - Chapter 5: Ultradian Rhythm, Circadian Rhythm, Theta Wave
Document Summary
5. 1 biological rhythms of consciousness: wakefulness and sleep. Consciousness: a person"s subjective awareness, including thoughts, perceptions, experiences of the world, and self-awareness. Circadian rhythms: internally driven daily cycles of approx. Circannual rhythms: which are cycles that occur annunally (ie. hibernation) Infradian rhythm because it occurs over a period of time longer than a day. Ultradian rhythm occur as frequent biological rhytms. Light is the primary stimulus regarding the human circadian rhythm. Melatonin peaks in high at nighttime and is reduced during wakefulness; for blind people, they should be given melatonin (since light doesn"t affect them) during the evening when people are about to go to sleep. Entrainment: when biological rhythms become synchronized to external cues such as light, temperature or even a clock. Endogenous rhythms: biological rhythms that are generated by our body independent of external cues such as light. In teens and 20s, they prefer to work, study and play in later times of the day.
