11.2 Audition Flashcards
sound waves enter the outer ear through the 2. ______ to the 3. _____ to the 4. _____ to the 5. ______
- hearing
- auditory canal
- middle ear
- cochela
what are the three parts of the inner ear?
the hammer, anvil, and stimp
part of the inner ear
cochela
what is vibrated by incoming vibrations?
cochlea membrane
what fills the ear? and what does it do?
- fluids
2. it causes ripples in the basilar membrane
what is bending the hair-lining surface?
basilar membrane
the hair movement triggers what?
triggers adjacent nerve cells
axons go to the 1. ______ _____ to send 2. _______ messages to the 3. ________
- auditory nerve
- neural
- thalamus
from the thalamus, where do the neural messages go to?
it goes to the auditory cortex in the temporal lobe
what does the placement of our two ears allow us to do?
it allows us to interpret sound in a 3D world
hairs are only attuned to 1. _______ ________. which helps us determine what?
- certain frequencies
2. loudness
pitch (1._________) can be determined by 2. _________ and 3. __________
- high or low
- place theory
- frequency theory
only certain hair cells activate
place theory
neurons firing to match the frequency of the vibrations which is interpreted by the brain at the same rate, varying pitch
frequency theory
determines loudness
ampiltude
