Shining an Annulus ("Donut") of Light on the Surround Portion

question 20

Multiple Choice

Shining an annulus ("donut") of light on the surround portion of an on-center ganglion cell's receptive field will cause that ganglion cell to fire

• A) more action potentials compared to baseline.
• B) fewer action potentials compared to baseline.
• C) the same frequency of action potentials compared to baseline.
• D) more action potentials if the light is very bright.
• E) None of the above: Light in the surround does not change the firing rate of retinal ganglion cells.

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