PSYCO104 Lecture Notes - Lecture 18: Animal Magnetism, Dental Extraction, Hypnosis
4 Dec 2014
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Interestingly, after 24-hours or so, sleep deprevation helps with depression. Also, used for indoctridation procedures - cults, etc. Rem sleep playes an important role in learning and brain development. Similar brain activity to as when awake. When animals are kept out of rem, learning decreases. Elevated heart rate / relaxtion of muscles to supress moter commands. Sleepwalking seems to happen in stage 3 & 4 sleep. Rats were trained to run a complex maze over numerous days. Rats prevented from entering rem didn"t learn to run the maze fast. As we get older, we spend proportionally less time in rem sleep. Infant: 70%, 6mo old: 30%, 8yr: 22%, adult: 15%. One theory is that rem sleep does not help consolidate, rather, helps reshape neurons, reconnect synapses. Rats were prevented from entering rem with drugs. Resulted in less brain mass, sparser connected neurons, Kittens were prevented from entering rem with drugs. Severe deficits in visual processing and moter control.
