PSYCH 1XX3 Study Guide - Final Guide: Basilar Membrane, Sound, Oval Window
14 Jul 2018
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Document Summary
The auditory mechanisms of different species: auditory mechanisms vary across species (due to evolution) in water/land/air, whether they communicate long distances, or whether they need to be able to receive high or low frequency sounds. Like accordion: physical properties of transverse waves are easier to identify so sound waves are. Conceptualized as them: physical property (amplitude, wavelength, purity) corresponds to (loudness, tone/pitch, timbre) Sine waves: pressure changes in sound waves can be graphed as a sine wave, 3 psych. properties of sound waves = loudness, pitch, timbre in comparison to 3 phys. The ear: the ear is a sound detecting instrument divided into: external, middle, inner, each section conducts sound differently. Incoming changes in air pressure go from external ear to middle ear, and amplified so they can be detected as changes in fluid pressure by the inner ear which then convert to auditory neural impulses. All incoming sounds would sound very muted and be difficult to hear.
