cerebral hemisphere

either half (left or right) of the cerebrum. The hemispheres are separated by a deep longitudinal fissure, but they are connected by commissural, projection, and association fibers so that each side of the brain normally is linked to functions of tissues on either side of the body. See also hemispheric lateralization.

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Psychology term of the day

December 18th 2024

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.