Exam 6: Exstintion: Sensation and Perception

The gate-control theory helps to explain our perception of _______________.

Swedish researchers recently found a new kind of nerve fiber that seems responsible for some types of itching.

Sound waves are collected by the outer ear and channeled down the auditory canal.Describe the major structures of the ear and describe the role each plays in the process of hearing.

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

The actual organ of hearing is the _______________ in the inner ear.

The eardrum is so sensitive it can respond to the movement of a single molecule.

The most common form of color blindness is:

Cones are more sensitive to light than are rods.

The sun produces a mixture of all the visible wavelengths.Describe what happens when drops of moisture in the air act like a prism.

Zoe is a participant in a psychophysical study and is having her absolute threshold for brightness measured.Describe the procedure for determining this measurement.

The frequency of a sound wave is related to the perceived _______________ of a sound.

An extreme version of pain without injury occurs in phantom pain.Explain the basic concepts of the gate-control theory and how the strange phenomenon of phantom pain might be explained in accordance with that theory.

Which of the following is the correct order in which light passes through the structures of the eye before getting to the retina?

The _______________ is a measure of the smallest amount of energy a person can reliably detect.

The oval window plays the same role in hearing that the retina plays in vision.

The eye is frequently compared with a camera,but in many ways the visual system is not like a camera.Explain why.

Too much stimulation can be bad for you because it can lead to:

_______________ is a set of mental operations that organize sensory impulses into meaningful patterns.

Sense receptors are specialized cells that convert physical energy in the environment or in the body into electrical energy that can be transmitted as nerve impulses to the brain.

Which of the following statements is true about white light?