The Receptive Field of a Retinal Ganglion Cell Results from a Pattern

question 253

Multiple Choice

The receptive field of a retinal ganglion cell results from a pattern of synapses between photoreceptors, horizontal cells, amacrine cells, and bipolar cells.Which of the following demonstrates the balance between excitatory and inhibitory inputs to an on-center retinal ganglion cell?

• A) When light covers the entire receptive field, it has very little effect on the firing rate of the ganglion cell for that receptive field.
• B) When light falls only on the center of the receptive field, action potentials are maximally induced.
• C) Where there is no light exposure, action potentials are infrequent.
• D) When light reaches only the surround of the receptive field, action potentials are absent.
• E) When light covers the entire receptive field, action potentials are absent.

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