Exam 2: The First Steps in Vision: From Light to Neural Signals

When something strikes a surface, especially light, sound, or heat, and is redirected (usually back toward its point of origin), it is being

Photoreceptors that are specialized for daylight vision, fine acuity, and color are called

P ganglion cells are different than M ganglion cells in that P ganglion cells

Describe how the shape of the human lens and eyeball can cause blurry vision that requires correction. What are the differences between emmetropia, myopia, hyperopia, and astigmatism?

In aging-related macular degeneration (AMD) there is a _______ loss of _______ vision.

If the P ganglion cells in the retina suddenly disappeared, what would be the consequences for perception?

Which of the following sense light?

In retinitis pigmentosa, there is

In what ways is the human eye similar to a camera? In what ways does it differ from a camera? Compare and contrast camera functions to the physiology of the human eye.

Refer to the figure. Eye doctors use an instrument called an ophthalmoscope to look at the _______ of their patients' eyes, as seen in the image.

Light and dark adaptation can occur by pupil constriction or dilation and

A neuron will not fire if a stimulus does not activate its

Refer to the figure. This chart is used to test for

The part of the photoreceptor that contains photopigment molecules is called the

The vertical pathway in the retina consists of all the following except

Light can be described as a stream of photons or a(n)

This term refers to the process by which the eye changes focus.

_______ refers to the distance between the location of a retinal image and the fovea.

The structure that becomes thicker or thinner to allow images to be focused onto the back of the eye is called the

A neuron will not fire if a stimulus does not activate its