Hearing (2) Flashcards
1
Q
What is the frequency range of human hearing?
A
20Hz to 20kHz
2
Q
How does the middle ear increase pressure?
A
Eardrum has larger SA than stapes footplate
Lever arm of stapes slightly increases force
3
Q
Which frequency type does the apex of the basilar membrane encode and what are its characteristics?
A
Low frequencies
High mass, low stiffness
4
Q
Which frequency type does the base of the basilar membrane encode and what are its characteristics?
A
High frequencies
Low mass, high stiffness
5
Q
What is the role of inner hair cells?
A
Sense sound
6
Q
What is the role of outer hair cells?
A
Amplify sound-induced motions
