Exam 6: Sensation and Perception

Light receptors that see best at night are the

It is most difficult for humans to localize sounds that are coming from directly in back of them or directly above their heads.

Perceiving incomplete objects as complete defines

In a signal-detection task,Jenny tends to be a "yea-sayer." She will have

An increase in the frequency of sound waves will correspond most directly to an increase in

The stimulus for a sound is a wave of pressure created when an object vibrates or when compressed air is released.

Timbre is what makes a note played on a flute,which produces relatively pure tones,sound different from the same note played on an oboe,which produces very complex sounds.

After taking your friend to the airport,you stay to watch the plane take off.As you watch it,the plane's image on your retina becomes smaller and smaller.Explain why you don't you perceive the airplane (and thus your friend)as shrinking in size.

When two stimuli are compared,the smallest difference in stimulation that can be reliably detected by an observer is called the sensory threshold.

The gate-control theory of pain states that the experience of pain depends,in part,on whether pain impulses get past a neurological "gate."

The complexity of light is related to our perception of

According to signal-detection theory,an observer's response in a detection task involves a sensory process and a decision process.To separate these two components,a researcher may include some trials in which no stimulus is present and others in which a weak stimulus is present.Under these conditions,four kinds of responses are possible.Complete the table with the names of the responses that are possible.

All of the human senses evolved to help us survive.

Karen has suffered from phantom limb pain for several years.She visits a neurologist who proposes trying a therapeutic treatment developed by Vilayanur Ramachandran.Karen is surprised that this simple treatment uses

When we vigorously rub a banged elbow,we are applying the principle of

The optic nerve is formed of

The lens of the eye functions in the same way as does the lens of a camera.

Which of the following is a binocular cue to depth?

Perception is defined as the detection of physical energy emitted or reflected by physical objects.

When you enter a dim room,the pupil in your eye contracts.