Final Exam

A bundle of fibers that uses chemical and electrical signals to transmit sensory and motor information from one body part to another.

 sends signals to the brain (afferent) and also sends signals from the brain back out to the cochlea (efferent).

Auditory nerve fiber signals stimulate cells in a structure called the brainstem, specifically in a structure the brainstem 

Cells in the cochlear nucleus then send signals to other structures in the brain; important in our ability to localize sound in space because they allow comparison of information coming in from the two ears.

Differences in the time of arrival of a sound to the two ears 

Differences in the magnitude of the sound to the two ears 

Both ___________________ and __________________ can be used by the brain to localize sound along the horizontal plane.

The smallest separation between two sequential sounds that can be detected

In order for us to determine ________ position, we can actually take advantage of the different ways sounds strike the pinna.

The superior olives send signals along a pathway called the ____________________ to another structure further “upstream” called the ______________.

The neurons in the inferior colliculus send signals onward to the _____________________________. 

The cells in the medial geniculate nucleus send signals to specific areas on the surface of the brain (the cortex) called ________________ .

The different frequencies of sound are represented in different parts of the auditory cortex; the systematic organization within an auditory structure on the basis of characteristic frequency

Continued intense exposure to sound produces changes in the responsiveness of the auditory system. One effect can be that the system is temporarily or permanently less sensitive to sound. If this effect is temporary, it is called a _________________________. If this effect is permanent, it is called a _________________________.

our ability to detect changes over time such as gaps between stimuli (gap detection) or changes in intensity over time.

refers to hearing with two ears

refers to detection of sound with only one ear. 

When the sound to the two ears is identical, it is called __________. 

When the sound to the two ears is different. it is called ________.