The Other Senses 7. Explain the auditory process, including the stimulus input, the structure and function of the ear, and the way sounds are located. According to the concept of visual capture, vision tends to dominate the other senses. However, audition, or hearing, is highly adaptive. The pressure waves we experience as sound vary in amplitude and frequency and correspondingly in perceived loudness and pitch. Decibels are the measuring unit for sound energy. Through a mechanical chain of events, sound waves traveling through the auditory canal cause minuscule vibrations in the eardrum. Transmitted via the bones of the middle ear (the hammer, anvil, and stirrup) to the fluid-filled cochlea in the inner ear, these vibrations create movement in tiny hair cells on the basilar membrane, triggering neural messages to the brain. Damage to the hair cells accounts for most hearing loss. If you cannot talk over a noise, it is potentially harmful. 8.
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