4. Sensation and Perception

When Consuela first put on her scarf, she could feel it quite easily. After a while, however, Consuela forgot that she was wearing a scarf at all; the sensation was gone. Which of the following processes is occurring?

Fenhua got into his car and turned on the radio. He turned the volume up to a comfortable level. After a few minutes of driving, however, the once-comfortable level seemed to be too low, so Fenhua turned up the volume. What has happened?

The term _____ refers to stimuli that are below the level of conscious awareness.

The _____ is the lowest level of stimulation that a person can consciously detect 50 percent of the time that the stimulation is present.

The tendency of the brain to stop attending to constant, unchanging information is known as

Many people believe that some stimuli act upon the unconscious mind and influence behavior, a process called

_____ is the way the brain deals with unchanging information from the environment.

If a researcher finds that one drop of perfume diffused through a three-room apartment is the minimum amount of stimuli needed to notice the scent, then this would be a test of one's

"Packets" of light waves are referred to as

Color is largely determined by the

Light bends as it passes through substances of different densities, a process known as

As your lens hardens through aging, you may have trouble with

The image projected on the retina is

Full dark adaptation, such as going from constant light to sudden darkness when turning out one's bedroom lights, takes about _____ minutes.

Thomas Young's theory of color vision