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Psych October - Haley Celovsky PSY 101 October 2008...

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Haley Celovsky PSY 101 October 2008 Sensation and Perception Hearing Physical vs. Psychological Dimensions Amplitude loudness Frequency pitch From sound waves to hearing… (How is this transition perceived?) Transduction is the conversion of a stimulation into a nerve impulse (within the cochlea) Nerve impulses produced within the cochlea are sent through auditory nerve to brain Vision Sensory receptors (rods and cones) are stimulated and produce nerve impulses that are sent to the brain Rods: black and white Cones: color Color vision: Rods are critical for night vision, enable one to see in low levels of light o Peripheral on the retina Cones are critical for day vision o Concentrated on the center of each retina Trichromatic theory o 3 types of photoreceptors: red, green, and blue are the colors the eye responds to most Blue has the longest wavelength, red the shortest Different hues/shades of color are produced by the convergence of
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