PSYC 1010 Lecture Notes - Oval Window, Basilar Membrane, Auditory Cortex

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PSYC 1010 Full Course Notes
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PSYC 1010 Full Course Notes
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Frequency: # of cycles per second related to the pitch. Amplitude: amount of compression and expansion of molecules, related to loudness we perceive (decibels to measure; 1=10 fold increase 1 decimal = 10 db) Pinna: (part you use for earrings and sunglasses) Vibration causes malleus, incus, stapes (3 tiny bones) to vibrate. Causes oval window to move in an out (conduction hearing loss: when the middle ear isn"t conducting sound well to the cochlea) Houses basilar membrane which moves as oval window moves. On top of membrane is organ of corti. Send impulses to auditory relay station thalamus then to auditory cortex (temporal lobe) (sensorineural hearing loss: when the receptor cells aren"t sending messages through the auditory nerves) Exposure to sounds that are too loud to talk over can cause damage to the inner ear, especially hair cells. Structures of the middle and inner ear can also be damaged by disease.

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