17 Auditory System Flashcards Preview

Vision Science I > 17 Auditory System > Flashcards

Flashcards in 17 Auditory System Deck (26)
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1
Q

Where is the superior olive nucleus located and how fast is the response?

A

brainstem; 1000x per second

2
Q

There are 3 neurons in the superior olive nucleus. Which one respond to only the left ear?

A

neuron 1

3
Q

What is type EI neuron?

A

It is mononaural, and it is activated by one ear but inhibited by the other ear.

4
Q

What technique can you use to test the hearing of an infant that is 6 months of age?

A

The use of electrodes to follow the e-volt potential.

5
Q

What is the central auditory pathway?a. dorsal stria -> trapezoid body -> lateral lemniscus -> intermediate stria -> S. olivary N. -> I. Colliculus ->MGNb. intermediate stria -> trapezoid body -> dorsal stria -> S. Olivary N. -> I. colliculus -> lateral lemniscus -> MGNc. dorsal stria -> intermediate stria -> trapezoid body -> S. olivary N. -> lateral lemniscus -> I. colliculus -> MGN

A

c. dorsal stria -> intermediate stria -> trapezoid body -> S. olivary N. -> lateral lemniscus -> I. colliculus -> MGN

6
Q

Adult brainstem responses are stronger with early musical training. T/F

A

True

7
Q

At how much milliseconds of wave form is where you hear the differences of similar sounding words?

A

At first 40ms

8
Q

There are tonotopic mappings in the auditory cortex. T/F

A

True

9
Q

True/False: Hair cells move with sound waves

A

True

10
Q

Hair cell transduction is sensitive to ______ changes in sound pressure.

A

Small

11
Q

Mechanically gated K+ channels respond to _____

A

Cilia bends

12
Q

Where does most of the input to spiral ganglion cells come from?

A

Inner hair cells (95%)

13
Q

At what frequency is the highest peak of response to high and low intensity sound?

A

1500Hz

14
Q

Sound travels at ____ miles per hour.

A

760

15
Q

The ear can pick up oscillations from ___ to _____ Hz.

A

20 to 20,000 Hz

16
Q

Anything that can move air molecules create sound. T or F?

A

True

17
Q

What are the three bones that make up the ossicles?

A

Malleus, Incus, Stapes

18
Q

Which portion of the inner ear is full of fluid and converts air pressure into vibrations?

A

Cochlea

19
Q

The Middle Ear does not amplify sound. T or F?

A

False. Middle Ear DOES amplify sound

20
Q

How do the Middle Ear muscles reduce sound?

A

By contraction

21
Q

At higher alititudes, babies tend to cry because their ____ is not fully developed.

A

Eustachian tube

22
Q

Vibrations at different frequencies are absorbed at different parts of the basilar membrane. T/F?

A

True

23
Q

Where are high frequency vibrations absorbed in the basilar membrane?

A

Absorbed first, near the Stapes

24
Q

Where does the movement of the basilar membrane get translated into a synapse?

A

Organ of Corti

25
Q

There are about 3500 inner hair cells in a single row and 15000-20000 outer hair cells that are in three rows. T/F

A

True

26
Q

Hair cells that break can be replaced. T/F

A

False. They cannot be replaced