PSYC 215 Lecture Notes - Lecture 7: Ear Canal, Middle Ear, Cerebral Cortex
5 Nov 2016
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Psyc 215 week 4 textbook notes. The outer ear is the only visible part of the peripheral auditory system. The peripheral auditory system includes the outer ear, the middle ear, and the inner ear. Neural responses generated by the inner ear are transmitted to the central auditory system which include populations of neurons in the brainstem and cerebral cortex. We know relatively little about how the central auditory system mediates perception of sound. The outer ear the outermost components of the auditory system: the pinna, meatus, and ear canal; gathers sound energy and focuses it down the ear canal (meatus) Ear canal s-shaped tube leading from the meatus to the tympanic membrane. Meatus the opening into the ear canal. A thin flexible membrane is stretched across the canal inside the skull tympanic membrane semitransparent cone-shaped membrane. Air pressure waves cause the membrane to vibrate, and three ossicles (tiny interconnected bones in the middle ear) transmit these vibrations to the cochlea.
