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psych U4M20
auditory input
| Question | Answer |
|---|---|
| sound | ability to pick up vibrations in air |
| pitch | high/low frequency/cycles |
| decibles | unit of measurement for the loudness of sounds |
| tympanic membrane | receives soundwaves and transmits the vibrations through the ossicles to the cochlea. |
| middle ear/ossicles | 3 bones vibrate to sound (middle ear) |
| oval window | membrane that conducts vibrations to the cochlea. |
| cochlea | sound waves that travel thru the cochlear fluid trigger nerve impulses |
| basilar membrane/organ of corti | structure on the surface of the basilar membrane that has receptor cells for hearing |
| conductive deafness | caused by damage to the mechanical system that conducts sound waves to the cochlea |
| sensorineural deafness | caused by damage to the cochlea's receptor cells or to the auditory nerves |
| place theory | the theory that links the pitch we hear with the place where the cochlea's membrane is stimulated |
| frequency theory | hair cells fire at different rates in the cochlea (for low pitches) |
| volley theory | neurons fire in sequence (more rapid impulses) |
| hearing direction and distance | how far away and where a sound is coming from |
| two remedies for hearing loss? | cochlear implant, hearing aid |
| monaural | loudness of sound and changes relate to distance and direction |
| binaural | difference of sound perceived by the 2 ears gives a cue to direction (better than monaural) |
Created by:
allyson.lee
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