Circadian Rhythm & Sleep Flashcards
Melatonin
Hormone manufactured by pineal gland that produces sleepiness.
Electroencephalogram or EEG
Graphic rep of brain activity
REM sleep
Rapid eye movement
Dreaming and voluntary muscle activity is suppressed
Beta brain waves
Waves produced during alert wakefulness
Alpha brain waves
Relaxed wakefulness and drowsiness
Hypnagogic hallucinations
Vivid sensory phenomena during onset of sleep
Sleep paralysis
Temporary condition where one cannot move in the morning or during night
Sleep spindles
Bursts of brain activity in stage 2 sleep
K complex
Single but high voltage spike of brain activity that characterizes stage 2 sleep
Sleep thinking
Vague, bland, thought like rumination a about real life events typically occur during NREN sleep.
Dream or nightmares
Occur in REM sleep
Manifest content
Freud:
Elements of dream consciously remembered and experienced
Latent content
Freud:
Unconscious wishes/thoughts/urges that are concealed in manifest content of dreams
Activation-synthesis model of dreaming
Theory that brain activity during sleep produces dream images which are combined by the brain into a dream story
Neurocognative model of dreaming
Emphasized continuity of waking and framing cognition and states that framing is like thinking under conditions of reduced sensory input and absence of control