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15. The Special Senses

Rods, Cones, and Light

15. The Special Senses

Rods, Cones, and Light

Guided videos.

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Sensation of Light by Rods and Cones

Sensation of Light by Rods and Cones

Rods, Cones, and Light Example 1

Rods, Cones, and Light Example 1

Rods, Cones, and Light Example 2

Rods, Cones, and Light Example 2

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Neuroscience: The Retina

Neuroscience: The Retina

Neuroscientifically Challenged

The Eye Phototransduction

The Eye Phototransduction

Practice this topic

Multiple Choice

A light hits your retina with a wavelength of 610 nm. Which cones will be stimulated, and what color will you perceive? Use the figure to help you answer.

Has a video solution.

Multiple Choice

Imagine that you are walking in the woods at night in very low light. A red flower and a green leaf are both reflecting the same total amount of light. Which would appear brighter to you and why? The image is provided for reference.

Has a video solution.

Multiple Choice

Which sequence follows the correct passage of light entering the cornea?

Multiple Choice

Which of the following shows the correct order of light transmission from the air to the retina?

Multiple Choice

The optic disc on the retina is __________.

Textbook Question

How do rods and cones differ functionally?

Has a video solution.

Textbook Question

Describe the response of rhodopsin to light stimuli. What is the outcome of this cascade of events?

Has a video solution.

Textbook Question

Why can you see an object better in dim light by looking to the side of it instead of directly at it?

Has a video solution.

Textbook Question

Each of the following statements is false. Correct each statement to make it true.

a. Photons are absorbed by rhodopsin in retinal ganglion cells.

Has a video solution.

Textbook Question

Each of the following statements is false. Correct each statement to make it true.

b. Rods and cones are found in the fovea centralis.

Has a video solution.

Textbook Question

Each of the following statements is false. Correct each statement to make it true.

c. In the dark, rods and cones produce action potentials.

Has a video solution.

Textbook Question

You are at a park watching some deer 35 feet away from you. A friend taps you on the shoulder to ask a question. As you turn to look at your friend, who is standing just 2 feet away, what changes would your eyes undergo?

Has a video solution.

Textbook Question

Your friend Shelly suffers from myopia (nearsightedness). You remember from your physics class that concave lenses cause light waves to spread or diverge and that convex lenses cause light waves to converge. What type of corrective lenses would you suggest to your friend? (a) concave lenses, (b) convex lenses.

Has a video solution.

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