Parts of the Ear

(Including inner ear!!)

know order

what happens when each wave encounters each part

Conductive Impairments

Sensorineural Impairments

-usually concenr the outter/middle ear

- problem conducting sound energy where it can be received

• congenital malformations
• blockages
• tears in the eardrum
• misalignment of the ossicles
• infections

inner ear, problem with erceptors and/or the nerves

• tinnitus
• anoxia at birth (lack of oxygen)
• ototoxic drugs
• presbycusia ("old ear")
• noise-induced hearing loss

electrodes inserted into the cocholea electrically stimulate auditory nerve fibors

Device made up of

• microphone worn behind the ear
• sound processor
• a transmitter mounted on mastoid bone
• receiver surgically mounted on mastoid bone

Implants stimulate cochlea at different places according to specific frequencies in the stimulus

help individuas with hearing impairments

work best for thse to receive them early in life.

process by which sound sources in the auditory scene are separated into individual perceptions

does not happen in the cochlea

Heuristics to help perceptually organize stimuli

proximity in time

good continuation

similarity of timbre and pitch

proximity in time: sounds that occur in rapid succession usually come from the same source

good continuation: sounds that stay constant or change smoothly are usually from the same source

similarity of timbre and pitch: similar sounds are grouped together

When sounds trigger our speech analyzer, and seem speech-like.

ex. music played backwards