simple cell

a neuron, most commonly found in the striate cortex, that has a receptive field consisting of an elongated center region and two elongated flanking regions. The response of a simple cell to stimulation in the center of the receptive field is the opposite of its response to stimulation in the flanking zones. This means that a simple cell responds best to an edge or a bar of a particular width and with a particular direction and location in the visual field. Also called simple cortical cell. Compare complex cell.

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Psychology term of the day

February 23rd 2025

Ballet’s disease

a disorder marked by the loss of movements of the eye and pupil while autonomic responses remain normal. The condition is associated with hyperthyroid disorders, such as exophthalmic goiter (see exophthalmos). Also called Ballet’s sign; ophthalmoplegia externa. [Gilbert Ballet (1853–1916), French neurologist]