4. Sensation and Perception

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

Cones are the special cells responsible for

In opponent-process theory, there are _____ primary colors.

Mateo has trouble seeing colors because the cones in his eyes do not work properly. When Mateo does see color, he sees primarily in blues, yellows, and shades of gray and confuses reds and greens. Mateo suffers from