PSY100Y5 Chapter Notes - Chapter 4: Absolute Threshold, Limen, Near-Sightedness
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PSY100Y5 Full Course Notes
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Is the selection, organization, and interpretation of sensory input. Is a dividing point between energy levels that do and do not have a detectable effect: e. g. Hardware stores sell a gadget with a photocell that automatically turns a lamp on when a room gets dark. The level of light intensity at which the gadget clicks on is its threshold. Absolute threshold: for a specific type of sensory input is the minimum amount of stimulation that an organism can detect. Just noticeable difference (jnd: defines the boundaries of an organism"s sensory capabilities. Subliminal perception: the registration of sensory input without conscious awareness, limen is another term for threshold, so subliminal means below threshold. Sensory adaptation: a gradual decline in sensitivity due to prolonged stimulation, an automatic, built-in process that keeps people tuned in to the changes rather than the constant in their sensory input.
