chapter 6 - Consciousness Chapter 6 Consciousness...

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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 1. - Sleep - Meditation - Hypnosis - drugs The Influences of Circadian Rhythms Circadian Rhythm 1. - Regular fluctuation form 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: 1. - brain waves 2. - eye movements
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3. - chin muscle tension 4. - heart rate 5. - respiration rate Non-REM Sleep Cycles Stage 1 - Lightest sleep - “hypnogogic” stage o myoclonia (startle awake, feeling of falling) - A transition period between waking and sleeping - Theta wave occurs Stage 2 1. - Somewhat more deeply asleep (mid-sleep) 2. 3. - Sleep spindles occur 4. - K Complex occurs Stage 3 1. - Deep sleep 2. 3. - Delta waves 20% = slow waves/ deep sleep begins 4. - Heart and breathing is slow and regular Stage 4 1. - Deepest sleep 2. 3. - Delta waves reach 100% 4. - BP and brain activity at lowest points in 24 hour period
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REM Sleep Rapid Eye Movement sleep - Called “active sleep” or “paradoxical sleep” - 20-25% of a nights sleep Internally: - intense brain activity - breain temp rises fast - epinephrine release leads to increases in Externally: - Body appears calm - Large muscles become paralyzed - Eyes dart around - Dreaming occurs in 80% of people During REM sleep, the brain conducts - Consolidation of learning and memory (all might studying doesn’t
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This note was uploaded on 09/20/2011 for the course PSYCH 120 taught by Professor Lebrenton during the Fall '10 term at Purdue.

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chapter 6 - Consciousness Chapter 6 Consciousness...

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