Ch. 3 Part 3

Ch. 3 Part 3 - Chapter 3 Part II The Other Senses Auditory...

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Chapter 3 Part II: The Other Senses
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Auditory Transduction Environmental Stimulus: Pressure waves of mechanical energy relayed through a medium such as air, water, rock, etc
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Auditory Transduction Honing of Mechanical Energy by the Body: These mechanical energy waves cause the tympanic membrane (eardrum) to expand and contract. The mechanical vibrations of the eardrum, in turn, relay mechanical energy waves through the ossicles (bones of the middle ear).
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Auditory Transduction Creating Action Potentials: Movement of the ossicles causes vibrations in the cochlea (in the inner ear). Vibrations within the cochlea open up ion channels on stereocilia (hair cells), which depolarize, generating action potentials.
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The Physics of Sound Amplitude : the difference in pressure from the baseline to the peak of the wave Corresponds to loudness Frequency : the number of cycles per second. 1 cycle per second = 1 hertz (1 Hz) Corresponds to pitch
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Wavelength is the distance from one wave peak to the next. In a given medium (such as air), the speed of sound is constant. Therefore, wavelength and frequency are related.
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Ch. 3 Part 3 - Chapter 3 Part II The Other Senses Auditory...

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