In a center-surround receptive field,lateral inhibition
A)is due to inhibitory signals sent from one photoreceptor to an adjacent photoreceptor.
B)is due to inhibitory signals sent from horizontal cells to photoreceptors.
C)is due to inhibitory signals sent from photoreceptors to horizontal cells.

Question

Quizplus · Accepted Answer

Lateral inhibition in a center-surround receptive field is due to inhibitory signals sent from horizontal cells to photoreceptors. Horizontal cells are located between photoreceptors and bipolar cells in the retina and can receive input from multiple photoreceptors. When the center of a photoreceptor's receptive field is stimulated, it sends an excitatory signal to its corresponding bipolar cell, which then sends a signal to the ganglion cell. However, the horizontal cells also receive input from the surrounding photoreceptors and send inhibitory signals back to them, reducing their activity. This lateral inhibition enhances the contrast and sharpness of edges in visual stimuli.

In a Center-Surround Receptive Field,lateral Inhibition