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15 Cards in this Set

  • Front
  • Back
-Measuring sleep
-Brain waves
-Eye movements
-Muscle activity
Stage 2 sleep
-Sleep spindles
-K complex
Stages 3 and 4 sleep
-Slow wave sleep
-Delta activity
-Looks more like awake/early stages
-Brain waves unsynchronized again
-Most dreams
-Eye movements
-Easily awakened
Sleep patterns
-REM cycle after 90 minutes
-More REM at end of night
-More slow wave sleep at beginning of night
-Based on time, not amount of time asleep
Sleep for Recuperation
-REM helps you consolidate memories (needed for learning)
-Brain rests during slow-wave sleep
-More stage 4 sleep after mental exertion
-Not related to physical exertion
Sleep for Survival
-Grazing animals sleep less
-More time to feed
-Prey animals sleep less
-Less vulnerable to predators
Sleep Deprivation
-Increased stress and immune response
Slow wave sleep deprivation
-more slow wave sleep in subsequent nights after total deprivation
-Less sleep=less 1 and 2, same amount of slow wave
-if woken during slow wave, feel sleepy during day
REM sleep deprivation
-REM rebound in subsequent nights after REM deprivation
-No impaired functioning
-No daytime sleepiness
-antidepressants decrease REM
-Some experiments show no REM rebound
-May just be a break from slow wave sleep
-May be to allow oxygen to eyes
Activation-Synthesis Hypothesis
-Cortex tries to make sense of random brain stem activity from pons
-External stimuli incorporated
Clinico-Anatomical Hypothesis
-No sensory information from V1, so other parts of brain make up info
-No censoring by prefrontal cortex
-Builds on Activation-Synthesis Hypothesis