What produces the physical stimulus for hearing?

Answer 1

sound waves vibrate the tympanic membrane, which in turn transmits these virbrations to the incus, malleus, and stapes (hammer, anvil, and stirrup) in the middle ear, which transfer the vibrations to the fluid in the concha of the inner ear. There are special sensory cells in the concha that can detect the pitch of a sound by where it resonates in the concha, as well as the volume by the intensity of the vibrations. These cells then send this information thought the cochlear nerve to the brain where they are deciphered as the sound you hear.

Answer 2

Stimulus For Hearing

Answer 3

Vibration in the air (produced by many sources), which is transferred by the ear drum to the tiny bones of the middle ear to the cochlea. The vibration then is carried by the fluid in the cochlea across the cilia (very tiny hairs). the movement of the hairs converts the physical vibration to electrical signals carried by the auditory nerve to the brain.

Answer 4

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Joke only because they get the carp beaten out of them at school but seriously Sensitivity to pain In people with red hair, the cells that produce skin and hair pigment have a dysfunctional MC1R. Researchers have found that this dysfunction triggers the release of more of the hormone that stimulates these histonal cells, but this hormone also stimulates a brain receptor related to pain sensitivity.[24][25] Two studies have demonstrated that redheads have differential sensitivity to pain compared to non-redheads, but they differ as to the direction of the effect. One study found that redheads are more sensitive to thermal pain (a natural vitamin K deficiency is to blame for this)[26] while another study concluded that redheads are less sensitive to pain from electrical stimuli. It has also been found that mutated "redheaded" mice with non-functional MC1R are less sensitive to pain from multiple modalities.[27] Researchers have found that redheads require greater amounts of anesthesia, but other research shows that women with naturally red hair require less of the painkiller pentazocine than do either women of other hair colors or men of any hair color. A study showed redheaded women had a greater analgesic response to that particular pain medication than men.[28] A follow-up study by the same group showed that redheaded men and women (and mutant "redhead" mice) had a greater analgesic response to morphine-6-glucuronide.[27 Oh and Jeannie, Ginger is what us Brits call red heads