People perceive continuously varying intensity or frequency as discrete ranges {categorical perception}. Sense processing divides continuous range into intervals and so discrete categories [Damper and Harnad, 2000] [Harnad, 1987]. For example, people perceive pitch as tones and half tones. People perceive tone durations as eighth notes, quarter notes, half notes, and whole notes.
Categorical perception detects musical intervals, animals, faces, and face expressions. People identify and label perceptual features and feature combinations with sharp boundaries, using many dimensions. Labeling/identifying and discrimination are two aspects of one mechanism.
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Date Modified: 2022.0224