Sleep Flashcards
polysomnography
multimodal technique to measure physiological processes during sleep
PSG
polysomnography
What is included in PSG
EEG, EMG, EOG
alpha waves characteristics
low amplitudes, high frequencies. first sign person is ready to drift to sleep
Stage 1 Sleep characterisitics
theta waves. low to moderate intensity and intermediate frequency. person less responsive to stimuli and fleeting thoughts. no eye movement
Stage 2 Sleep characteristics
theta waves change intermixed as K-complex and sleep spindles. decreased heart rate, respiration, and temperature. no eye movement
K complex
in stage 2 sleep. large and slow. occur as single wave among theta waves
Sleep spindles
in stage 2 sleep. bursts of waves
Stage 3 sleep characteristics
slow wave sleep. delta waves which are high amplitude, low frequency waves. deepest level of sleep. no eye movement. Growth hormones secreted, heart rate and digestion slow
REM Sleep
quick eye movement bursts. resemble beta waves when individuals are awake. waves are low intensity and variable frequency. low skeletal muscle movement. dreams occur
pineal gland
produces melatonin
manifest content
plotlines of dreams
latent content
unconscious drives and wishes that are difficult to express
activation-synthesis theory
dreams are byproducts of brain activation during REM sleep