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Sound Wave
Vibrations that the ear can hear
Amplitude (Hearing)
Affects loudness (higher amplitude = louder sound)
Wavelength (Frequency)
Affects pitch (short wavelength = high pitch)
Place Theory
Pitch is determined by where the basilar membrane vibrates
Frequency Theory
Pitch is determined by how fast hair cells fire
Auditory Localization
Ability to tell where a sound is coming from
Sensorineural Deafness
Damage to hair cells or auditory nerve
Conductive Deafness
Problem with sound traveling through the outer or middle ear
Cochlear Implant
Device that directly stimulates the auditory nerve