PSYC 110 Lecture Notes - Lecture 15: Hypothalamus, Sleep Hygiene, Pineal Gland
9 Nov 2016
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How do we study sleep: eeg. Monitors the brain waves throughout the various stages of sleep. If you deprive someone of sleep, you go into rem sleep faster: this shows that rem stages are particularly important, rem rapid eye movement. Makes up about 25% of total sleep. Eeg output looks like wakefulness beta waves. Characterized by lots of dreaming, but not the only stage. If you disrupt rem sleep you can disrupt the consolidation process of memory. But most often in rem: often forget dreams. ~70% that are remembered have negative emotional content: major theories on why we dream: Psychoanalytic theory: dreams are an opportunity to work through feelings and drives that are(cid:374)"t (cid:272)o(cid:374)s(cid:272)iousl(cid:455) e(cid:454)pressed. Information processing: dreams are an opportunity to process and consolidate information from the previous day. Threat stimulation: the brain gets practice handling threatening situations: your own nightly psychosis: Why do we need sleep: three major theories: We sleep because it is calorically efficient.
