PSYC CH.6 Flashcards
consciousness
our immediate awareness of our internal and external states.
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altered states of consciousness
a change in a person’s ability to be fully aware of their external surroundings and internal states.
-being awake, asleep, having a dream, drugs, anesthesia
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states of consciousness
the level of awareness we have of our external surroundings and internal states.
- being fully awake or asleep
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contents of consciousness
specific thoughts we are aware of about our internal states or external surroundings.
- being aware of ur dog or an itch you have
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The reticular formation
- brainstem=Reticular formation
- when it is damaged you can no longer maintain a state of wakefulness
- damage to R.F can cause coma or paralyzation
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The Thalamus and Hypothalamus
- both receive input from r.f and hindbrain
- damage to these structures can cause lack of awareness, disturbance of wakefullness, and can enter a deep coma
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The cerebral cortex
- damage to c.c can cause blindness
- c.c helps us be aware that we are attending to such stimuli
- right c.c = non-verbal forms of communication
- left c.c = verbal awareness
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what is blindsight?
- Blindsight is a psychological defense mechanism, caused by a self-protective need to deny visual information that might cause fear, anxiety, or shame. Visual information from the eye is being processed unconsciously, so people with blindsight don’t know that they are visually processing.
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Development and consciousness
- rouge test
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preconsciousness
level of awareness in which information can become readily available to consciousness if necessary.(can also be known as automatic behaviour)
-remebering w you ate for lunch last week
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unconscious state
state in which information is not easily accessible to conscious awareness.
-forgetting the name of someone then randomly remembering a couple dyas later
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Cognitive Views of the Unconscious
- implicit memory
- explicit memory
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Freud’s Views of the Unconscious
- having thoughts and memories too painful or disturbing for the consciousness
- Freudian slip - when unconscious materiall can enter cosciousness
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adaptive theory of sleep
theory that organisms sleep for the purpose of self- preservation, to keep away from predators that are more active at night.
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restorative theory of sleep
theory that we sleep to allow the brain and body to restore certain depleted chemical resources and eliminate chemical wastes that have accumulated during the waking day.
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circadian rhythm
pattern of sleep–wake cycles that in human beings roughly corresponds to periods of daylight and night.
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suprachiasmatic nucleus (SCN)
a small group of neurons in the hypothalamus responsible for coordinating the many rhythms of the body.
* having a sense of light and dark. helps w sleep-wake pattern
* invention of light bulb has negative impacts bcs it increases hours of light we are exposed to
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hypnagogic state(pre sleep period)
a pre-sleep period often characterized by vivid sensory phenomena.
* hypnagogic hallucination = we might feel like we are falling, floating, hear our name, or a loud crash, but its all a hallucination
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Stage 1
- we reach stage 1 when we doze off
- theta waves (slow waves)
- bridge between wakefulness and sleep; it lasts only a few minutes.
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Stage 2
- breathing becomes rhthmic
- body twitches
- muscles relax
- lasts around 15-20min
- delta waves(deep sleep)
- sleep spindles
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sleep spindles
bursts of brain activity lasting a second or two; occur during Stage 2 sleep.
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Stage 3 and 4
- deep and slow wave sleep
- in stage 4 h.r, b.p, and breathing drops to its lowest
- ppl are most prone to sleep walking