PSYCH 104 Sleep and Dreams - PSYCH 104 1:06:00 PM SLEEP AND...

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PSYCH  104 19/09/2006 13:06:00 SLEEP AND DREAMS Rhythms of sleep and wakefulness (circadian rhythms) Brain Activity and sleep o Electroencephalogram o EEG Patterns in Sleep Stages and Cycles of Sleep o REM Sleep (rapid eye movements) Causes of Sleep  o Passively Running Down o Actively Turning off The Reticular Activating System and Wakefulness The Raphe System And Sleep PGO and REM Sleep o Pons produces electric activity and travels to the geniculate Explanations for Dreams o Nocturnal Thinking o Thoughts and Feelings from the Unconscious (Freud Theory) o Random Neurological Events (Activation-Synthesis Theory) Neurons become electrically stimulated by the pons by random These random memories get thrown together to make dreams,  impossible to interpret rationally Neurons that have been most recently fired, are more likely to  fire again in dreams, because the threshold to make them fire is  now less Sleep Disorders o Insomnia Electrical activity in brain from raphe system can’t be turned off  easily, too much brain activity
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