PSY100Y5 Chapter Notes - Chapter 4: Visual Acuity, Absolute Threshold, Receptive Field
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PSY100Y5 Full Course Notes
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Perception is the selection, organization and interpretation of sensory output. Sensation involves the absorption of energy (light or sound waves by sensory organs -> ears and eyes) Perception involves organizing and translating sensory input into something meaningful (ex. Your best friend"s face or other environmental stimuli) The study of how physical stimuli are translated into psychological experience. Sensation begins with a stimulus, any detectable input from the environment. A threshold is a dividing point between energy levels that do and do not have a detectable effect. An absolute threshold for a specific type of sensory input is the minimum amount of stimulation that an organism can detect. Define the boundaries of an organism"s sensory capabilities. As stimulus increases, subjects" probability of responding to stimuli gradually increases. The absolute threshold as the stimulus intensity detected 50 percent of the time. A just noticeable difference (jnd) is the smallest difference in the amount of stimulation that a specific sense can detect.
