Chapter 4-3

The main function of dendrites is to

receive information

The gate-control theory suggests that incoming pain sensations may be blocked at the

spinal cord

Petra looked directly into a very bright light and damaged her retina. The ophthalmologist has told her that she has sustained massive damage to her cones, but for the most part her rods have not been affected. one change that you could predict for Petra's vision is that she will now have

No color vision

Which statement about the gustatory statement is not accurate?

The physical stimulus for taste is any molecular substance

An action potential is

an electrical signal that travels along the axon of a neuron

When you walk into a dark room your vision gradually improves so you can see more of your surroundings. This is an example of

dark adaptation

When a clarinet plays a high C followed by a low C, these two notes are perceived differently because they differ in

frequency

Cells found in the nervous system that insulate, nourish, and direct the growth of neurons as well as remove the dead neurons and waste products are known as

glia

The primary visual cortex is located in the

occipital lobes

The sensory receptors for smell are referred to as

olfactory cilia

As a result of the pathway through which visual information travels from the eye to the visual cortex, images seen in the left visual field are received in

only the right visual cortex

After having your picture taken with a yellow flash, you momentarily see blue spots floating before your eyes. This phenomenon is best explained by

opponent-process theory

Our perception of the brightness of a color is affected mainly by

the amplitude of light waves

Ashlynn was listening to a tape recording of a famous speech that was being played backward. She just heard gibberish until a classmate said the phrase, "meet me in st. louis." was clearly spoken. the tape was rewound and as Ashylynn listened this time, she also clearly heard the same phrase. Ashylynn's ability to detect the phrase the second time through the tape illustrates

the top-down processing model of perception

Charlie's eyes function normally, but he is unable to recognize objects. Charlie is suffering from

visual agnosia