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Flashcards in 12 Deck (17):
1

The auditory brainstem and forebrain are apart of the:

Central Auditory System

2

What is in the auditory brainstem?

Cochlear Nuclei
Superior Olivary Complex
Lateral LemNiscus
Inferior Colliculus

3

What is in the auditory forebrain?

Medial geniculate body
Auditory Cortex

4

What is the primary function of the CN?

Unknown

5

The CN has _ divisions

3

6

_ organization carries through to the CN

Tonotopic

7

What is believed to be the first stage of binaural processing?

Superior Olivary Complex

8

What percent of pathways cross over to the contralateral side? Ipsilateral?

80% - contralateral
20% - ipsilateral

9

What do the lateral and medial superior olive do?

Detect and encode interaural level and time differences to localize sound

10

What controls the acoustic reflex?

Superior Olivary Complex

11

Acoustic reflex is the contraction of the:

Stapedius and tensor tympani muscle in response to loud sound

12

Acoustic reflex is more effective for _ frequency sounds (below _)

Low frequency sounds below 2000 Hz

13

Acoustic reflex can cause a _ _ reduction

10-30dB

14

What is the reflex pathway? (8 steps)

Outer
Inner
Middle
Auditory Nerve
Cochlear Nucleus
Superior Olivary Complex
Facial Nerve
Stapedius Muscle

15

What is the auditory pathway? (3 main steps)

Sensory System
-Outer
-Middle
-Inner
Peripheral Nervous System
-Auditory Nerve
Central Nervous System
-Auditory Brainstem
---Cochlear Nucleus
---Trapezoid Body
---Superior Olivary Complex
---Lateral Lemniscus
---Inferior Colliculus
-Auditory Forebrain
---Medial Geniculate Body
---Auditory Cortex

16

What is characteristic delay?

Neurons in the medial geniculate body are highly sensitive interaural time delays

17

The superior olivary complex is the first stage of:

Binaural processing