PSYCH261 Chapter Notes - Chapter 7: Incus, Oval Window, Middle Ear
6 Nov 2018
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Audition, the body senses, and the chemical senses. Acoustic stimuli also provide info about things that are hidden from view. Our ears work just as well in the dark vs light. the stimulus: When an object vibrates, its movements cause molecules of air. Sounds vary in their pitch, loudness, and timbre. Pitch:a perceptual dimension of sound; corresponds to intensity. Auditory stimulus is determined by the frequency of vibration. Loudness:a perceptual dimension of sound; corresponds to intensity. Degree which the condensation and rarefactions of air differ from each other. More vigorous vibrations of an object produce more intense sound waves and hence louder ones. Timbre: a perceptual dimension of sound; corresponds to complexity. Provides information about the nature of the particular sound. Most natural acoustic stimuli are complex, consisting of several different frequencies of vibration. the particular mixture determines the sound"s timbre. Auditory system analyzes the vibrations that reach our ear. recognize the source of a sound is but its location.
