PSYC 211 Lecture Notes - Lecture 10: Basilar Membrane, Ventral Cochlear Nucleus, Cochlear Implant
27 Oct 2016
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Chapter#7: audition, the body senses, and the chemical senses: They are produced by objects that vibrate and set molecules of air into motion. If the air is vibrating anywhere between 30 and 20,000 times per second, these waves will stimulate receptor cells in our ears and will be perceived as sound. Disturbances in air pressure propagate through a set medium, which is air. So when you have the vibrating membrane, the change in air pressure will propagate through space at a set speed which is like. The way to convey a message- by changing air pressure- which is propagating through space and effecting the vibration of a second membrane. How fast that membrane is vibrating- we measure per second, and that is a frequency measured in hertz. This effect of how fast the membrane is vibrating is not ganna effect the speed of propagation of the sound wave- that is a fixed property of the air molecules.
