A hair cell that was triggered by Brownian motion would be useless. All inner hair cells are tuned to certain vibrations in the endolymph that are greater than those caused by Brownian motion.
Brownian motion is motion of air that, considered as vibrations, has a broad range of frequencies in it. Which means that an ear exposed to air experiencing a sufficiently high level of brownian motion will have many or all of its inner hair cells excited. If your statement was correct, humans would not be able to hear white noise, whereas obviously (to any hearing person who has ever been exposed to white noise) we can.
If your statement was correct, humans would not be able to hear white noise, whereas obviously (to any hearing person who has ever been exposed to white noise) we can.
White noise requires that we hear a number of frequencies, but also requires that the frequencies are of sufficient amplitude to move the ear drum.
But that is just the TLDR. I am trying to keep this simple, but it is not simple, so here is the next level of complexity.
The issue is not only frequency, but also amplitude and duration.
Since Brownian motion is not sufficient to significantly...
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