Exam 6: Exstintion: Sensation and Perception

Perceptual illusions usually are harmless,in fact,we may find them amusing.Other times,however,illusions have led to tragic accidents.Explain why visual illusions occur.Describe two different illusions,one that is entertaining and one that could lead to dangerous consequences.

When you enter a dim room,the _______________ widens to let more light in.

The person in the most hazardous environment in regard to sound intensity would be:

Although the human senses are very sensitive:

The human tongue is divided into four sections and each section detects either salty,sour,bitter,or sweet.

The visual receptors are located in the back of the eye,or _______________.

Even when the spinal cord had been completely severed,amputees often continue to report pain from areas below the break.

Kevin watches as his wife Denise walks toward the house.Even though the retinal image of Denise grows larger as Denise approaches,she does not appear to be growing larger as she moves closer and closer to Kevin.This illustrates:

Neurons in the retina of the eye that gather information from receptor cells are called:

When measuring absolute threshold,reliable detection is said to occur when a person can detect a signal 99 percent of the time.

Sensory adaptation spares us from having to respond to unimportant sensory information.

What procedure did Rene Descartes use in order to demonstrate that retinal images are upside-down.

In order to infer an object's location we estimate its distance from us through binocular and monocular cues.

In dark adaptation,cones adapt slowly,taking 20 minutes or longer.

There are two levels of processing involved in color vision.The first occurs in the retina and the second in the ganglion cells and in neurons in the brain.Analyze the reasons that we see the world in living color according to these two theories.What causes color blindness? How can color deficiency be explained? Describe the frequency of color deficiency based on gender and race.

Cones are much more sensitive than are rods in darkness.

The detection of physical energy emitted or reflected by physical objects is called:

The dimension of auditory experience related to the frequency of the sound wave and,to some extent,its intensity is called:

Interposition is one of the binocular cues to depth.

In signal detection tasks,naysayers will have more correct rejections than yea-sayers