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AP psych unit 3.1

TermDefinition
Sensation Detection of physical stimuli by sensory receptors.
Perception Interpretation of sensory information by the brain.
Bottom-Up Processing Building perception from sensory input data.
Top-Down Processing Using prior knowledge to interpret sensory information.
Selective Attention Focusing on specific stimuli while ignoring others.
Inattentional Blindness Failure to notice unexpected stimuli in focus.
Change Blindness Inability to detect changes in visual scenes.
Priming an individual's exposure to a certain stimulus influences their response to a subsequent prompt
Transduction Conversion of physical energy into neural signals.
Psychophysics Study of relationships between stimuli and perception.
Absolute Threshold Minimum stimulus intensity detectable 50% of time.
Signal Detection Theory the detection of a stimulus depends on both the intensity of the stimulus and the physical/psychological state of the individual
Subliminal Stimuli below conscious awareness threshold.
Difference Threshold Smallest detectable difference between two stimuli.
Weber's Law theory that states that in order to perceive a difference between two stimuli
Sensory Adaptation Reduced sensitivity to constant stimuli over time.
Wavelength Distance between the peaks of waves.
Hue Color attribute determined by light wavelength.
Frequency Number of wave cycles per second
Intensity Brightness or loudness of a stimulus.
Pupil Opening in the eye controlling light entry.
Iris Colored part of the eye regulating pupil size.
Lens Transparent structure focusing light onto retina.
Retina Layer of photoreceptors converting light to signals.
Accommodation Eye's adjustment for focusing on objects at various distances.
Rods Photoreceptors sensitive to low light levels.
Cones Photoreceptors responsible for color vision.
Optic Nerve Nerve transmitting visual information to the brain.
Blind Spot Area in retina lacking photoreceptors
Fovea Central region of retina with highest visual acuity.
Feature Detectors Neurons responding to specific visual features.
Young Helmholtz Trichromatic Theory Theory explaining color vision via three color receptors.
Opponent Process Theory Theory explaining color vision through opposing color pairs.
Created by: sarak8
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