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53 Cards in this Set
- Front
- Back
Agents of balanced anesthesia
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sedative, anesthesia, muscle relaxant, analgesia
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Clinical assessment of consciousness
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MAC (potency of inhaled anesthetic), PRST (autonomic nervous system index of consciousness), Central nervous system indices (ERPs = abolish late components; EEG power spectrum = keep between 2-3 Hz); BIS/bispectral index (computerized version of EEG, algorithm)
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Glasgow Coma Scale (what's it based on?)
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eye, verbal, motor response, best response patient can make
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What's damaged in coma?
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posterior brain stem
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What measures muscle relaxation?
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EMG (electromyogram)
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What measures eye movements?
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EOG (electrooculogram)
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Stage 2 sleep
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spindles, K-complexes
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Stage 1 descending
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alpha disappears, muscle relaxation, SREM, denial of sleep on awakening
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Stage 3
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appearance of delta activity, hard to wake
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Stage 4
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dominance of delta activity, awaken groggy
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REM
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no alpha activity, extreme muscle relaxation, rapid-eye movements, higher heart rate, awaken alert
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Hypnagogic reverie
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imagery in descending stage 1, myoclonic jerk
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Hypnopompic reverie
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ascending stage 1, sleep paralysis, static imagery
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Night terrors
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stages 3,4; return to peaceful sleep, no memory upon awakening
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Nightmare
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stage REM
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Somnambulism
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sleepwalking; stage NREM (unparalyzed)
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Somniloguy
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sleeptalking; REM (concordant with dream contexts, good semantic and syntax) or NREM (discordant with dream, aphasic)
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Wyatt study
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amnesia for items presented in minutes immediately preceding sleep onset
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Dreaming in stage REM vs. NREM
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Foulkes: either; actually, REM
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Freud
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dreams have hidden meanings, symbolically representing in repressed unconscious thoughts and memories
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AIM Model of consciousness
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3 elements to produce consciousness: cortical activation (level of alertness), input-output gating (input source internal vs. external), modulation (between aminergic neurons and cholinergic neurons)
-->dreams are meaningless |
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AIM and waking
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high activation, external information, aminergic > cholinergic
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AIM and NREM
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low activation, internal information, aminergic = cholinergic
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AIM and REM
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high activation, internal information, cholinergic > aminergic
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Foulkes
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dreams are a form of thinking, random samples of the mind of the dreamer; during REM and NREM
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Dormhoff
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dreaming is an achievement marking a certain stage of cognitive development
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Norman Malcolm
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the concept of dreaming really refers to the impressions and the reports of having dreamt, which occur immediately after awakening from sleep, not during sleep
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Dennett
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library of undreamed dreams in the brain, no conscious experience happening during sleep, just the unconscious insertion of a dream recollection into memory
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Activation-synthesis theory
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dream consciousness is seen as a disorganized and deficient form of consciousness
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Theories about why we dream
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side-effect of neuronal activities, solves problems, mental health, simulation of world to practice
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Dissociative disorders
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disruption in consciousness affecting patient's awareness of memory/identity; impairs explicit memory
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Psychogenic amnesia
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person cannot remember a certain period of life
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psychogenic fugue
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forgets part of life and who he/she is, also affects semantics
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multiple personality disorder (dissociate identity disorder)
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switches between identities
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Depersonalization
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experiences himself as different
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Derealization
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experiences world as different
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Conversion disorders
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disruption in consciousness affecting the patient's sensory and perceptual awareness, or ability to engage in voluntary motor activity (cannot feel, see, hear despite nothing wrong with nervous system); reversible
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4 criteria to distinguish between altered states of consciousness
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induction procedure, subjective experience, overt behavior, psychophysiological indices
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Views of development of consciousness
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Phylogenetic: evolution of a trait across species
Ontogenetic: emergence of a trait within an individual Cultural |
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Descartes
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animals behave due to unconscious, involuntary reflexes; humans have souls/free will/mind (highest stage of development)
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Darwin
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natural selection also applies to mental state, we can find qualities of humans in "higher" animals
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Romanes
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extends intelligence down to nonhuman animals (anecdotal evidence) (improbable that the body is continuous across species but not the mind)
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Morgan
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conservative about the attribution of mind to nonanimals
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Washburn
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we can draw analogies from humans to animals, criteria for attribution of mind to animals: anatomical resemblance to humans, rapid learning
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Watson
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consciousness and intelligence play no role in animal behavior --> humans this way also
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Griffin
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3 considerations for determining consciousness: complexity of behavior, similarity of nervouse systems, functionality of consciousness
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Anonsognosia
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unawareness of deficit (brain refuses to update the self-representation appropriately)
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Asomatognosia
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patient denies ownership of a limb
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Capgras delusion
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families faces do not elicit emotional reaction, makes the patient believe that people have been switched with identical doubles
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Fregoli
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almost all faces elicit strong, specific emotional reaction --> significant person is following around in different disguises
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left hemisphere roles
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self-representation, explanations about ourselves; construct an internally coherent narrative of all the experiences and behaviors of the person
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right hemisphere
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critically examine and question the narratives; damage --> confabulates
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Lloyd Morgan's canon
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we should not attribute mental activity to animals if simpler explanations will do
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