[Laser] Interesting Question.

[Jim Deane]

Synesthesia is the phenomenon of sensory cross-wiring,
where you could "taste" or "feel" a color, or "see" or
"hear" a taste, etc.

In your case, it may be a simple synesthesia, but it
could also be an indicator of physical problems such
as a tumor or other neurological or psychological
problem.

If I were you, I would make an appointment with my
regular physician to discuss this and ask for a
referral to a neurolgist.

Jim


--- "KD7JYK, 49H7KR" <kd7jyk at earthlink.net> wrote:
> Well, it's pretty off the wall.
> 
> For several years I have heard a hum, fairly low in
> frequency, it can be
> likened to a diesel truck idling, and at times like
> a heavy truck lugging up
> a hill.  After several months of testing, it seems
> to be an nervous system
> interaction.  I hear it above certain light
> intensities, and closing my eyes
> makes it go away.  Different colors seems to create
> my "hearing" of a
> different tone, for example, looking at a red light
> is a nice pleasant low
> tone.  A yellow light is a higher tone, still
> musical in nature, and green
> lights create a hissing shrieking sound, like a
> cross between hissing steam
> and a whistle with a ball in it such as used by
> police.
> 
> To sleep I use earplugs.  This would indicate an
> unknown accoustic source,
> however the hum is heard world-wide which again
> points to nerve damage or
> interaction of some sort.
> 
> Also over the past few years, I have noticed in fair
> lighting, especially
> after watching TV, after I turn the TV off, I see a
> flickering in my eyes,
> such as is seen with older film porjectors.  I
> always assumed my eyes had a
> fairly fast response rate and were responding to the
> frame rate of the TV
> images.
> 
> This morning I awoke and heard the hum while still
> wearing the earplugs.
> This has never happened.  I closed my eyes, the hum
> went away, I covered my
> head with my eyes open and it went away.  I pulled
> the earplugs out and I
> heard the hum.  What is most interesting, is as I
> lay on my side looking at
> where the floor and wall come together, I saw the
> flickering which only
> occured after watching TV in the past.  The hum and
> the flicker I was
> coincided perfectly.  I think there is some sort of
> nerve damage or
> cross-wiring which creates the "hearing" of colors,
> but seeing the flicker
> at the same time caused me to ask if there is
> something out there in the
> light spectrum that is the equivelent of a low
> frequency hum that is most
> always there, sort of like in an office building,
> sometimes you always hear
> a hum from the HVAC equipment under the usual
> changing noises, just a
> constant background drone, nearly always the same
> frequency.
> 
> I am wondering since I most always hear this hum
> which interacts with the
> eyes being open, is there a constant pulsating light
> source that "hums",
> something from the sun or a constant manmade light
> "din"?
> 
> I had an idea, a PV cell or CDS cell wired to an
> audio amplifier, I could
> place it where I saw the flickers and see if
> anything can be heard.  This
> should narrow down the question of it being just
> nerve damage, but thought
> I'd ask here, just in case.
> 
> Just some ideas.
> 
> Kurt
> 
> Rosetta Proving Ground, Nevada
> Hell's Laboratory
> 
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