States Of Consciousness Flashcards
Characteristics of Consciousness
Subjective, private, dynamic, self reflective, linked to attention
Consciousness
Our moment to moment awareness of ourselves and our environment
Measures of Consciousness
Self reporting, physiological measures, behavioral measures
Levels of Consciousness
(Freud)
Conscious: present in material being
Preconscious: material that can be immediately called into conscious
Unconscious: harder to pull out into conscious thought, cannot be done immediately
Iceberg Analogy
(Freud)
The mind is like an iceberg, the tip is your conscious, while the preconscious and unconscious are what lie below the water
The Cognitive Unconscious
Reisberg’s idea that the conscious and unconscious are complimentary and work in harmony.
(Unconscious is when things are easier to show than tell, like riding a bike, conscious is controlled processing of attention and effort)
Sleep (circadian rhythms)
Daily 24 hour vilification cycles made up of five stages every 90 minutes which affects body temperature, hormones secretions, and other bodily functions
Superchiasmatic Nucleus
Region of the hypothalamus which regulates the circadian rhythms through regulation of information concerning light
Pineal Gland
Secretes melatonin, a chemical which causes drowsiness and helps regulate sleep cycles
5 stages of sleep
Stages 1, 2, 3, 4, and REM sleep
Stage 1 (sleep)
Lasts 5-10 minutes, eyes closed and muscles may contract, resulting in a feeling of falling. Can be woken easily/without detriment. Characterized by change from wakeful Beta Waves or relaxed Alpha Waves to the slower resting Theta Waves
Stage 2 (sleep)
Mixed periods of muscle tone and relaxation, heart rate slows and body temperature increases. Body prepares to enter a deep sleep, although sleep remains light. Characterized by continuing Theta Waves with the occasional Sleep Spindles (an increase in wave frequency) and K Complexes (an increase on wave amplitude).
Stage 3 (sleep)
The beginning of deep sleep. Characterized by shift to Delta Waves, the slowest and highest amplitude brain waves. Stage 3 is delta sleep where less than 50% of the brain waves are Delta Waves
Stage 4 (sleep)
Continuation of deep sleep. Characterized by continuing Delta Waves, and delta sleep in which more than 50% of brain waves are Delta Waves.
REM Sleep
Associated with areas near visual cortex, decreased activity in prefrontal cortex, high arousal, increase in limbic system activity, motor cortex active but blocked (REM sleep paralysis). 20-25% of adult sleep is REM, babies have 50%. Characterized by similarity to waking sleep with Alpha, Beta, and Desynchronous waves
