PSYC 1000 Chapter Notes - Chapter 5.1, 5.3: Barbiturate, Ketamine, Morphine

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Module 5. 1: biological rhythms of consciousness: wakefulness and sleep. Consciousness: person"s subjective awareness, including thoughts, perceptions, experiences of the world and self-awareness. Infradian rhythm- longer than a period of 24 hours. Ultradian rhythm- shorter than a period of 24 hours. Circadian rhythm: internally driven daily cycles of approximately 24 hours affecting physiological and behavioural processes. Superchiasmatic nucleus (scn- located in hypothalamus: controls biological rhythms, ex. We are more inclined to sleep at night because it is dark out. 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. Polysomnography: set of objective measurements used to examine physiological variables during sleep. Beta waves: high frequency, low amplitude, characteristic of wakefulness. Alpha waves: signal that a person may be daydreaming, meditating or starting to fall asleep.

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