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Brain tries to provide the best t of these internally

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Unformatted text preview: e similarities between waking and dreaming. THEORIES OF DREAMING 5. INTEGRATED MODEL OF DREAMING (Antrobus) During REM sleep, RAS stimulates various modules in the cortex. ( and these modules interact just as they do when we are awake) Perceptual modules Cognitive modules Emotional modules - produces images that the then interpret these may overlay an emotional theme. Brain tries to provide the "best fit" of these internally generated images. Motor modules are active, but their output is blocked by REM muscle paralysis. HYPNOSIS …… • Hypnosis = a systematic procedure that causes increased relaxatoin and suggestibility • Hypnotic susceptibility: • Effects produced through hypnosis: individual differences – – – – disinhibition sensory distortions/ hallucinations Posthypnotic suggestions and amnesia Anelgesia (dental and childbirth studies) • fMRI studies show <activity in pain centers THEORIES OF HYPNOSIS …… Altered State of Consciousness or Role Playing? Social Cognitive Theory expectations and role-playing produce "real "hypnotic expriences Dissociation Hypothesis holds that hypnosis splits consciousness into two streams ….divided consciousness How does hypnosis have its effects? currently no definitive answer. MEDITATION • Meditation = practices that train attention to heighten awareness and bring mental processes under greater voluntary control. • Yoga, transcendental meditation – potential physiological benefits • Similar to effective relaxation procedures. COMPLETE LOSS OF CONSCIOUSNESS …… COMA = Loss of motility, sensation, and consciousness with preservation of autonomic functions. COMA • CAUSES – Head Trauma • • • – Concussion-sudden trauma-induced alteration in alert state. Contusion-bruising of brain tissue. Whiplash-bruising/ stretching of axons Hypoxia-lack of sufficient oxygen/ tissue death. COMPLETE LOSS OF CONSCIOUSNESS …… • POTENTIAL TREATMENTS – Therapeutic hypothermia • – Oxygen therapy • – injuries involving swelling of brain tissue r...
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