PSY 101 Lecture 1: Psychology Notes Part 1
Document Summary
The psychology of sleep & dreaming: circadian rhythms: biological rhythms experienced by humans and many other species. Other instruments: emg (muscles), eog (eyes), ekg (heart rate) Some study erectile dysfunction (physical or psychological?: retina detects light, sends message to hypothalamus (particular: suprachiasmic nucleus, scn sends message to pineal gland, pineal gland releases melatonin, melatonin adjusts clock, natural sleep, resetting the biological clock (necessary. Artificial melatonin does not tend to help this process: there are sleep labs that help do research on sleeping/dreaming, sleep cycles. Awake: beta waves (low voltage, high frequency) Stage 1: theta waves (light sleep, lasts 5-7 minutes) Stage 2: mixture of waves (lasts about 20 minutes) Sleep spindles: random burst of brain activity. Stage 3 & 4: delta waves (high voltage, low frequency. Rem: brain waves look like you are awake (low voltage, high frequency) Rapid eye movements (r. e. m. ) and rapid brain waves. Motor cortex center of brain very active, but brain stem blocks efferent messages.
