14. Which statement about center-surround receptive fields in the retina is fals

Question

14. Which statement about center-surround receptive fields in the retina is false? a. Cells that are inhibited by light in their center are excited by light in their surround. b. Cells that are excited by light in their center are inhibited by light in their surround. c. The surround portion of the receptive field is typically an annulus (or doughnut-shaped ring) that surrounds the circular center. d. Light in the center of an off-center cell will increase its firing rate. e. The best stimulus for an on-center cell is light in its center and darkness in its surround. 15. A photoreceptor cell is exposed to a flash of light. How does the membrane potential of this cell and its corresponding ON-center bipolar and ganglion cells change? a. Hyperpolarize, hyperpolarize, depolarize b. Depolarize, hyperpolarize, depolarize c. Hyperpolarize, depolarize, hyperpolarize d. Depolarize, hyperpolarize, hyperpolarize e. Hyperpolarize, depolarize, depolarize

Explanation / Answer

Ans 14 : a) Cells that are inhibited by light in their center are excited by light in their surround

Retina is the light sensitive layer of the eye of an organism . It has photoreceptor cells such as rods and cones that are responsible for the vision in low light intensities and color vision.

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