20 Consciousness (chapter 6) Flashcards
Consciousness & Dreaming - theories & purposes
Consciousness def
David Chalmers - discovery moment to moment awareness of selves and environment
Selective attention
Shifts in focus to stimuli/ exclusion to others
Means of measuring states of consciousness:
Self report measures: ask people of self insight into their consciousness - not verifiable (lying/ not fully aware), + simple, - language needed to communicate data
Behavioural measures: monitoring behaviour + verifiable, + useful on animals, young children, and others
Psychological measures: correspondence between body status and mental state eg recognition in a mirror/ corresponding brain imaging activity with sleep states
Combination of above methods to triangulate weakness of methods
levels of consciousness: Freudian viewpoint: psychoanalytic theory:
3 levels
Conscious mind: current aware thoughts
Preconscious mental events: events not currently aware of but easily recallable
Unconscious events: not easily brought to awareness/ subconscious biases - antisocial concepts
levels of consciousness: cognitive viewpoint
3 levels
Controlled processing:
conscious control - slow, more flexible
Automatice processing:
autopilot actions - fast, routine actions
Divided attention:
attend to + perform multiple activities at once
Blindsight
neural partial blindness, but can still respond to stimuli eg position of stimuli
Priming
subliminal stimuli presented, then influences later conscious perceptions
= our conscious thought can be influenced by subconscious stimuli
Consciousness use is to be selective of environment
purpose of a conscious mind
- learning for planning + decision making
- override dangerous impulses
- rationalise for new situations
Sleep waves types
Beta waves: wide awake alert - high freq, low amp.
Alpha waves: relaxed lower freq, higher amp
If alpha waves continue, sleep occurs
Sleep phases
stage 1: light sleep, irregular brain wave pattern, dream like images while feeling of awakeness
Stage 2: deeper sleep sleep spindles: periods of high brain wave activity
Stage 3: slow large rhythmic waves (slow waves)
Stage 4: deep sleep hard to wake - mostly delta waves (slow waves)
REM sleep (‘Paradoxical sleep’): dream state, High arousal as if awake - similar to beta wave activity, eyes move fast
- REM sleep paralysis: during rem, you are paralysed so don’t sleepwalk/ act out on dreams
- Paradoxical sleep: active/aroused, little movement
Progression through sleep phases
1, 2 , 3, 4, 3, 2, REM
REMs gets longer, 3,4 get shorter - more awake
when does dreaming happen
mostly during REM but also can during all other stages (25% in others)
Hypnagogic state
transition mindstate from awake to asleep - more delusional, lower consciousness. Still can see/ hear but slipping into stages 1,2
Purpose of dreaming: Freud’s Psychoanalytic theory
Purpose of dreams: Wish fulfilment: indulgent in our unconscious urges - often aggressive/ sexual/shunned = nightmares/bizarre
2 types of dream content:
1) Manifest Content: surface story that dream reports/ remember (ego)
2) Latent Content: hidden meanings of those events - fuelled by innate desires (id)
The translation of Latent content into Manifest content is called: Dream Work
What is Freud’s dream work concept?
The translation of Latent content into Manifest content by the ego to make acceptable sense of obscene subconscious thoughts.