Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ANAT2010 > Auditory Systems > Flashcards

Auditory Systems Flashcards

1
Q

What is the function of the pinna?

A

Funnels sound towards eardrum - amplifies

Direction-dependent filtering - localisation of sound - above/below or in-front/behind

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the function of the middle ear?

A

Increases pressure in ear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How does the middle ear increase pressure?

A

Lever action of ossicles - increases force

Footplate of stapes has smaller area than tympanic membrane - decreases area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the function of the middle ear reflex?

A

Dampens sounds - protective role

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the function of inner hair cells?

A

Detect sound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the function of outer hair cells?

A

Amplify basilar membrane movement - increases sensitivity - more frequency-selective

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the function of the semi-circular canals?

A

Detect rotation and angular acceleration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the function of the utricle and saccule?

A

Detect linear acceleration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the function of the cochlear nucleus?

A

First site of convergence/divergence of input from ipsilateral ear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the function of the superior olive?

A

Convergence of input from 2 ears - sound localisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the function of the lateral superior olive?

A

Extracts interaural level difference

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the function of the medial superior olive?

A

Extracts interaural time difference

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the function of the inferior colliculus?

A 
Integrates ascending and descending pathways
Integrates MSO (low frequency ITD) and LSO (high frequency ILD) input
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the function of the superior colliculus?

A

Map of auditory space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the function of the medial medial geniculate nucleus (MGN)?

A

Auditory attention and arousal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the function of the dorsal medial geniculate nucleus (MGN)?

A

Plasticity and learning

17
Q

What is the function of the ventral medial geniculate nucleus (MGN)?

A

Primary auditory information transmission

18
Q

What is the function of the auditory cortex?

A

Contains multiple tonotopic frequency maps

19
Q

What is the effect of a primary auditory cortex lesion?

A

Impairs localisation in horizontal and vertical space

20
Q

What is the function of descending connections?

A

Plasticity and learning

21
Q

What is the function of lateral olivo-cochlear fibres?

A

Modulate sensitivity of auditory nerve fibres

22
Q

What is the function of medial olivo-cochlear fibres?

A

Modulate cochlear amplification

ANAT2010 (21 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions