Chapter 6

If someone electrically stimulated the auditory receptors in your ear, what would you perceive?

What makes the blind spot of the retina blind?

You sometimes find that you can see a faint star on a dark night better if you look slightly to the side of the star instead of straight at it. Why?

If you found a species with a high ratio of cones to rods in its retina, what would you predict about its way of life?

When a television set is off, its screen appears gray. When you watch a program, parts of the screen appear black, even though more light is actually showing on the screen than when the set was off. What accounts for the black perception?

Most people can use varying amounts of three colors to match any other color that they see. Who would be an exception to this rule, and how many colors would they need?

Where does the optic nerve start and where does it end?

As we progress from bipolar cells to ganglion cells to later cells in the visual system, are receptive fields ordinarily larger, smaller, or the same size? Why?

What is an example of an unconscious visually guided behavior?

Suppose someone can describe an object in detail but stumbles and fumbles when trying to walk toward it and pick it up. Which is probably damaged, the dorsal path or the ventral path?

Area V4 is important for color constancy. What is color constancy?