acuity grating

a stimulus used to measure an individual’s sharpness of visual perception. It consists of alternating black and white lines spaced closely together; the point at which the participant perceives the lines to be homogeneous gives an indication of visual acuity. When the contrast of the lines is varied, the acuity grating can be used to test contrast sensitivity.

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Psychology term of the day

December 18th 2024

functional pain

pain with no known physiological cause.