metacontrast

n. a form of backward masking in which the perception of a visible stimulus (the target) is altered by the subsequent presentation of a second visual stimulus (the mask) in a different spatial location. The target is often a small dot, while the mask is a ring that surrounds it. Each stimulus is presented very briefly (10–100 ms), at intervals that are varied systematically, and the quality of the target’s percept is measured. Compare paracontrast.

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Psychology term of the day

February 19th 2025

fascia

n. (pl. fasciae) a sheet or band of fibrous tissue covering, separating, or binding together muscles, organs, and other soft-tissue structures of the body. —fascial adj.