Central Auditory System (CAS)

Question 1

overview of CAS

Answer 1

carries electrical impluses along auditory nerves so they can be decoded and interpreted in the auditory cortex of the brain

Question 2

functions of CAS (2)

Answer 2

1. High-level Auditory Abilities

2. basic Auditory Abilities

Question 3

what are the high-level auditory abilities?

Answer 3

recognising, interpreting and intergrating sound signals

Question 4

what are the basic auditory abilities?

Answer 4

sound localisation and frequency analysis

Question 5

what is sound localisation?

Answer 5

the brain using the time differences, phrase difference and amplitude differences between signals received from L + R ears to determine the distance and direction of sounds

Question 6

what nerve do the hair cells of the organ of corti excite?

Answer 6

Vestibulocochlear nerve (1st nerve in CAS)

Question 7

what are the synpases found in the CAS? (3)

Answer 7

1. Coclear Nuclei
2. Superior Olivary Nerves
3. Inferior Colliculus

Question 8

Cochlear Nuclei

Answer 8

synpase of the brain stem

Question 9

Superior Olivary Nerves

Answer 9

synpase of the medulla oblongata

discursion (L+R cross)

Question 10

Inferior Colliculus

Answer 10

synpase of the thalamus