PSYA01H3 Chapter Notes - Chapter 4.3: Basilar Membrane, Cochlear Implant, Sound
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Function of ear is to gather sound waves function of hearing is to extract some sort of meaning from those sound waves. Sound waves: changes in mechanical pressure transmitted through solids, liquids or gases. Figure 4. 29 compares the hearing ranges of several different species. We begin to feel pain at about 125 db. Regular exposure to sound over 100 db for more than one minute risks permanent hearing loss. No more than 15 minutes of unprotected exposure is recommended for sounds between 90 & 100db. Annoying; interferes with conversation; constant exposure may cause damage. Semicircular canal: one of three fluid-filled structures that play a role in. Converting sound vibrations into neural impulses is possible. Because of hair-like projections that line the basilar membrane of the. Sound localization: process of identifying where sound is coming from: handled by parts of brain stem and midbrain structure called inferior colliculus.
