PSYCH261 Lecture Notes - Lecture 40: Fundamental Frequency, Somatosensory System, Stirrup
29 Apr 2019
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Document Summary
Commonly told we have 5 senses, but not actually accurate or true. Audition, somatosensation, chemical (taste & smell), pain, etc. Second most important sense (allows for verbal communication, provides information about things that are hidden from view, etc. ) Sounds are produced by objects that vibrate and set molecules of air into motion (molecules alternately condense and rarefy producing waves that travel away from the object at approximately 700 miles/h. If the vibration ranges between 30 and 20,000 times per second, these waves will stimulate receptor cells in our ears and will be perceived as sounds. Pitch: a perceptual dimension of sound; corresponds to the fundamental frequency (similar to hue : hertz: cycles per second (hz, can have overtones/multiple fundamental frequencies (unlike hue) Loudness: a perceptual dimension of sound; corresponds to intensity (degree to which condensations and rarefactions of the air differ from each other (more vigorous = louder)
