PSC 100 Lecture Notes - Lecture 5: Orexin, Activation-Synthesis Hypothesis, Pineal Gland
Document Summary
E. g. cortisol is released early in the day. Melatonin is a hormone produced by the pineal gland and its production is stimulated in darkness. Bright light inhibits the release of melatonin. Dreaming is so important missing rem sleep on one night could lead to increased. Rem sleep in another night known as rem rebound. Freud theory of dreams; plotline of dreams (manifest content) are symbolic versions of the unconscious drives and wishes (latent content). Dreams are a way of understanding our inner conflicts. Threat-simulation theory; dreams are seen as an ancient biological defense mechanism there is an evolutionary advantage to dreaming as we can predict outcomes and stimulate possible future events. Expectation fulfillment theory; dreaming is needed to discharge emotional arousals that haven"t been expressed during the day. Activation synthesis theory; dreams are a byproduct of brain activation during rem sleep. Dreaming can also improve learning and problem-solving. Dyssomnias; abnormalities in the amount, quality or timing of sleep.
