day06 - Psychology 205 Perception 7 Feb 08 Day 06 Three...

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Psychology 205 Perception 7 Feb 08 Day 06
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     Three Kinds of Adaptation definition: "Modify to suit new conditions" biology:    Darwin -- change in the genome so that the phenome       better fits its ecological niche; better --> reproduction;       change random with selection perception:    1. Responding to constant stimuli  sensory neurons    2. Accommodating different ranges of stimulation sensory systems    3. Accommodating different patterns of stimulation     cortex
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1. Response to constant stimuli      neuronal touch, olfaction, gustation, vision not audition, pain, or kinesthesis response decrement, spontaneous recovery cross-adaptation adaptation (d') vs. habituation  (β29 stabilized images     Purkinje's tree saccades & fixations pursuit movements physiological nystagmus  (eye tremors)
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sensory systems like change without change they “adapt” sensation begins to go away sometimes complete; sometimes not neural response declines sensory organs fire less transient cells  can be thought of as rapidly adapting sustained cells  can be thought of as slowly adapting  
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slowly adapting rapidly adapting
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for convenience  look at rapidly  adapting systems
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how to test?
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1st test  interval
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2nd test  interval
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3rd test  interval
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Result by  connecting  data points
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no cross- adaptation adapt with  one stimulus test with a  different  stimulus
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some cross  adaptation
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adaptation (d') 
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day06 - Psychology 205 Perception 7 Feb 08 Day 06 Three...

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