[sdiy] The eardrum and brownian motion

[phillip m gallo]

Back in the '70's i was able to spend a good deal of time in a studio that
was light tight and proof to external sound to a very great degree.  My
experience was that your hearing is adaptive.

Initially when external sound is removed you immediately deal with the
"emotional" issues involved with the omission of audio "cue's" as to the
locations of walls and the depth of a room.  Your (or at least my) ear
starts to "auto-range" as if it is "searching" for sound.  As time goes by
you hear the rushing of blood (through your ear i am guessing) and your
heartbeat at very loud levels.  Continued time spent this way causes you to
either accept and "intellectually" cancel this sound or your ear ramps the
volume down again to where it no longer seems so predominate.  Interestingly
you eyes seem to do something quite similar in that at first you see "black"
soon followed by short "flashes" of pin point color.  This also slowly
attenuates until you start to see black.

An hour spent in this condition is very restful and contemplative with
familiarity not really changing the above sensory reactions but allow
comfort to be achieved more quickly.


Notably, i did not hear a "high pitched" squeal or tone.  Anyone subject to
this may consider being tested for tinnitus.


regards,
p

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