PSYC 211 Study Guide - Midterm Guide: Medium Frequency, Nigrostriatal Pathway, Fastigial Nucleus
11 Mar 2013
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The stimulus vigour range between 30-20 000 times per second, it becomes audible. Sounds are produced by objects that vibrate and set molecules of air into motion, producing waves, so that if the waves. Sound is funnelled by the pinna, or the shell of the outer ear, to the tympanic membrane, also known as the eardrum. Sound waves cause movement of the basilar membrane and bending of the cilia, which produces action potentials in the hair cells. High frequencies affect primarily the end nearest the oval window (the base), and low frequencies affect primarily the end nearest the round window (the apex) Auditory hair cells and the transduction of auditory information. Cilia: contain a core of acting laments surrounded by myosin laments and are linked adjacently by elastic tip links at the. Hair cells form synapses with dendrites of bipolar neurons whose axons bring auditory information to the brain.
