PSYC 1 Chapter Notes - Chapter 20: Clairvoyance, Semicircular Canals, Hypnosis
Document Summary
Psyc 1 textbook notes module 20: the nonvisual senses. Frequency: number of complete wavelengths that pass a point in a given time. Pitch: tone"s experienced highness/lowness; depends on frequency. Middle ear: chamber between eardrum and cochlea containing three tiny bones (hammer, anvil, stirrup) that concentrate vibrations of eardrum on cochlea"s oval window. Cochlea: coiled, bony, fluid-filled tube in inner ear; sound waves traveling through fluid trigger nerve impulses. Inner ear: innermost part of ear; cochlea, semicircular canals vestibular sacs. Sensorineural hearing loss: most common form of hearing loss; aka nerve deafness; damage to cochlea"s receptor cells/auditory nerves. Conduction hearing loss: damage to mechanical system that conducts sound waves to cochlea. Cochlear implant: device for converting sounds into electrical signals and stimulating auditory nerve through electrodes threaded into cochlea. Place theory: hermann von helmholtz; links the pitch we hear with place where cochlea"s membrane is stimulated: high pitches.
