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AP Psych Ch 4

Sensation Neurons in a receptor create an internal pattern of nerve impulses that represent the conditions then stimulated in either inside or outside the body
Perception Brings meaning to sensation. A process that makes sensory patterns meaningful and more elaborate
Transduction Transformation of one form of energy into another (Stimulus to nerve impulses)
Sensory Adaptation Loss of responsiveness in receptor cells after stimulus has remained unchanged/constant for a while
Absolute Threshold Amount of stimulation necessary for a stimulus to be detected (50% of the time)
Difference Threshold Smallest amount by which a stimulus can be charged and the difference be detected (JND)
Weber's Law The JND increases with the magnitude of the stimulus
Signal Detection theory Perceptual judgement as combination of sensation and decision-making process
Negative Afterimages Sensations that linger after the stimulus is removed
Vestibular Sense Sense of body in relationship to gravity
Kinesthetic Sense Sense of body parts in relationship to each other
Olfaction Smell
Gustation Taste
Feature Detectors Cells in the cortex that specialize in extracting certain factors of a stimuli
Binding problem A major unsolved mystery in cognitive psychology concerning the physical process used by the brain to combine many aspects of sensation to a certain percept
Bottom-up Processing Analysis that begins with the sense receptors and works up to the brains integration of sensory info
Top-down processing Analysis guided by higher-level mental process
Perceptual Constancies Ability to recognize the same objects under different conditions, such as change in illumination, distance, or location
Created by: Uhniqua