PSYA01H3 Chapter Notes - Chapter 5: Reuptake, Peyote, Stroop Effect
Document Summary
5. 1 biological rhythms o consciousness: wakefulness and sleep. Biological rhythms have evolved: eg: bears are well known for hibernating during cold winter months. Circannual rhythm (a yearly cycle) example of the bears. Infradian rhythm any rhythm that occurs over a period of time longer than: eg: menstrual cycle. Ultradian rhythms more frequent biological rhythms a day: eg: heart rate, urination, hormonal activity. Circadian rhythms: internally driven daily cycles of approximately 24 hours affecting physiological and behavioural processes: include specific times to sleep and be awake, be hungry etc. We need much less sleep especially rem sleep as we move from infancy to early childhood into adulthood. Polysomnography: a set of objective measurements used to examine physiological variables during sleep eyes and other parts of the body that measures brain waves using sensors attached to the scalp. Electrical sensors attached to the skin measure muscle activity around the. Sleep cycles are most often defined by electroencephalogram (eeg) a device.
