PSY100H1 Chapter Notes - Chapter 6: Basilar Membrane, Cochlear Implant, Auditory Cortex
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PSY100H1 Full Course Notes
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Document Summary
The function of the ear is to father and detect sound waves and to transform these into neural impulses which are then transported to the brain. There are two characteristics of sound waves: frequency - the wavelength and is measured in hertz, amplitude - the number of cycles a sound wave travels per second. Pitch is the perceptual experience of sound wave frequencies. 20 hz to 20,000 hz detected by humans. Pinna - helps channel sound waves to the ear and allows you to determine the source of location of a sound: middle. Ossicles - tiny movable bones known as the malleus, incus, and stapes. The eardrum is attached to these bones, so any movement of the eardrum is due to the movement of these bones. Cochlea - has the ossicles attached to it. A fluid-filled membrane that is coiled in a snail-like shape and contains the structures that convert sound into neural impulses.
