If You Could Monitor the Activity from the Photoreceptors of Rods

question 90

Multiple Choice

If you could monitor the activity from the photoreceptors of rods and cones in the retina during a dream, would you expect these cells to be producing electrical signals? Why?

• A)Yes, because people's eyes move during sleep, and this stimulates the rods and cones.
• B)Yes, because the rods and cones are reproducing images that are then sent to the brain.
• C)No, because rods and cones never produce electrical signals.
• D)No, because rods and cones only convert light energy into electrical signals.

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