PSYA01H3 Chapter Notes - Chapter 4.3: Sound, Temporal Lobe, Auditory Cortex
Document Summary
Joordens: sound & the structure of the ear, function of hearing: extracting some sort of meaning from sound waves, sound. Function of human ear: to detect sound waves and to transform that information into neural signals. Humans can detect sounds in frequency from 20 20 000 hz. We begin to feel pain at about 125 db. Regular exposure to sound over 100 db for more than a minute risks permanent hearing loss. No more than 15 minutes of unprotected exposure is recommended for sounds between 90-100 db. 85 db is the level at which hearing damage (after 8 hours) begins. Annoying; interferes with conversation; constant exposure may cause damage. Middle ear: ossicles: 3 moveable bones that move due to its attachment to eardrum, malleus (hammer, incus (anvil, stapes (stirrup, attached to cochlea. Cochlear implants: small microphone that detects sounds from outside world and electronically stimulates parts of membranes in cochlea: perception of sound, sound localization: finding the source.
