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23 Cards in this Set
- Front
- Back
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Signal Detection Theory |
a psychological theory that divides the detection of a sensory signal into a sensory process and a decision process |
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Absolute Threshold |
the smallest quantity of physical energy that can be reliably detected by an observer |
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Ernst Weber |
just noticeable difference theory/difference thresholds |
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Hermon Von Helmholtz |
depth perception, color vision, motion perception |
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Thomas Young |
RGB tri chromatic theory (young-helmholtz theory) opponent process theory- r/g b/y black/white colors work in opposition afterimage |
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Biological rhythms |
a periodic, more or less regular fluctuation in a biological system; it may or may not have psychological implications
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endogenous |
generated from within rather than by external cues |
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circadian rhythms |
biological rhythms that occur about every 24 hours (sleep/wake cycle) |
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suprachiasmatic nucleus |
an area of the brain containing a biological clock that governs circadian rhythms |
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melatonin |
a hormone secreted by the pineal gland; it is involved in regulation of circadian rhythms
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non-rem stage 1 |
brain waves are small and irregular, you feel yourself drifting away on the edge of consciousness. if awakened you may recall fantasies or some visual images |
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non-rem stage 2 |
brain emits short bursts of rapid, high peaking waves called sleep spindles. minor noises probably wont disturb you |
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non-rem stage 3 |
in addition to the characteristics of stage two the brain emits delta waves which are very slow waves with high peaks. at this point your breathing and pulse have slowed down and you are hard to awaken. decrease in release of serotonin, acetocholine, norepinephrine (slower heart rate/breathing) |
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Lucid dreams |
dreams in which the dreamer is aware of dreaming |
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REM Dreams |
weird, bizarre, colorful (nightmares occur in this stage dreams) |
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Non-Rem Dreams |
logical, black and white |
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sleep walking |
somnam bolism |
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sleep talking |
somniloquy |
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Activation synthesis theory |
dreaming results from the cortical synthesis and interpretation of neural signals triggered by activity in the lower part of the brain |
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Dissociation |
split in consciousness in which one part of the mind operates independently of the reset of consciousness |
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perception |
the process by which the brain organizes and interprets sensory information |
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Sensation |
the detection, by sense organs, of physical energy emitted or reflected by physical objects. |
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sense receptors |
specialized cells that convert physical energy in the environment or the body to electrical energy that can be transmitted as nerve impulses to the brain |
