"Ch6_Student

"Ch6_Student - Consciousness Chapter 6...

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Consciousness Chapter 6 Consciousness: Everything of which we are aware at any given time Thoughts Feelings Sensations External stimuli Altered State of Consciousness * Changes in awareness produced by Sleep Meditation Hypnosis The Influences of Circadian Rhythms * Circadian Rhythm *Regular fluctuation from high to low points of certain bodily functions and behaviors * Affects functions of * Blood pressure Heart rate Appetite Secretion of hormones and digestive enzymes Sensory acuity Elimination Body’s response to medication Sleep * Understanding of sleep increased by the study of: Brain waves Eye movements Chin muscle tension Heart Rate Respiration rate * Two types of sleep: REM(Rapid Eye Movement) and Non-REM (NREM)
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Non-REM Sleep Cycles (an hour and half) * Stage 1 (20min or so) Lightest sleep (easy to be awaken) Hypnogogic” state (startle awake, feeling of falling) A transition period between waking and sleeping Theta waves occur * Stage 2 Somewhat more deeply asleep (mid-sleep) Sleep spindles occur K complex occurs * Stage 3 Deep sleep Delta waves 20% = slow wave/deep sleep begins Heart and breathing slow and regular * Stage 4 Deepest sleep Delta waves reach nearly 100% Blood pressure and brain activity at lowest points in 24 hour period REM Sleep * Rapid Eye Movement slee p Called “active sleep” or “paradoxical sleep” 20-25% of a night's sleep * Internally: Intense brain activity Brain temperature rises rapidly Epinephrine release leads to increases in Blood pressure Heart rate Respiration * Externally: Body appears calm Large muscles become paralyzed Eyes dart around Dreaming occurs in 80% of people
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* During REM sleep, the brain conducts Consolidation of learning and memory (all night studying doesn't help)
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"Ch6_Student - Consciousness Chapter 6...

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