Auditory system - Slide 1 Auditory and Vestibular Systems

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Unformatted text preview: Slide 1 Auditory and Vestibular Systems ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 2 Sensory systems All sensory systems carry information from the environment to the brain, where it is processed. Sensory receptors in the periphery detect physical events Stimuli act on these receptors and alter their membrane potential Sensory transduction is the process of transferring stimuli into changes in the membrane potential Receptor cells lack an axon; no action potential Receptor potential ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 3 Auditory system Concerned with the detection, location and recognition of sound Sound is the vibration of air molecules Alternate compression/rarification of the air produces sound waves ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 4 Sound Three perceptual dimensions of sound The human ear perceives sound with a pitch between 30 and 20,000 Hz ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 5 Anatomy of the ear Outer ear Pinna Ear canal Tympanic membrane Middle ear Ossicles bones that conduct & magnify vibrations Malleus Incus Stapes ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 6 Anatomy of the ear Inner ear Oval window membrane between the stapes and cochlea Cochlea fluid-filled structure that conducts vibrations; contains: Organ of Corti sensory organ that receives vibrations; contains: Hair cel s auditory receptor cel s Basilar membrane membrane where hair cel s are attached...
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This note was uploaded on 10/01/2008 for the course PSYCH 202 taught by Professor Kim during the Winter '06 term at University of Washington.

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Auditory system - Slide 1 Auditory and Vestibular Systems

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