ACTUALLY THE CAUSES OF TINNITUS ARE NOT WELL KNOWN OR
UNDERSTOOD.

A million people suffer from tinnitus -- in province of Quebec alone

Université de Montréal Professor Sylvie Hébert is conducting a study
exploring the root causes of tinnitus, a condition that creates the
perception of sound in the absence of external stimulation. Tinnitus
affects 20 percent of Quebecers 55 and older in Quebec, which
represents one million people.

"The auditory sensations sound like buzzing or whistling in one or
both ears," says Professor Hébert of the Université de Montréal's
Faculty of Medicine School of Speech Therapy and Audiology and
researcher at both the Institut universitaire de gériatrie de
Montréal and the BRAMS.

"It is pretty hard to study because only the suffering patient can
describe the intensity. In addition, tinnitus isn't observable with
current clinical tools," says Hébert, noting the job may be difficult
but not impossible and she has devised a two-part study.

The first part subjected more than 20 subjects to a variety of
auditory perception tasks in order to measure the neural correlates
of tinnitus using magnetic resonance imaging (MRI). The second part
explored the physiological pathway. The objective is to study the
correlation between stress and tinnitus and demonstrate the role of
endocrinal processes in normal and abnormal auditory perception.

"Tinnitus can emerge after an ear infection, such as a poorly treated
ear inflammation (otitis), sound trauma such as a gun shot or loud
concert speakers, or hearing deterioration from aging known as
presbycusis, " says Hébert. "In certain cases, tinnitus could result
from a disorder of the auditory nerve fibers, which would send
auditory information to the central nervous system in the absence of
prior stimulation. "

Currently, no medication exists. However, according to Hébert,
classic hearing aids that increase external sounds can help. Also,
auditory prosthesis that create a sound comparable to a waterfall can
help mask the buzzing and whistling of tinnitus.

Source: University of Montreal
http://www.physorg.com/news14432609 9.html


On Nov 22, 6:56 am, Steve G <[EMAIL PROTECTED]> wrote:
> >>After 30 odd years of studying it, they still can't prove how or why this 
> >>label of tinnitus is coming about.  All they really know is, the theme is 
> >>ringing in the ears.
>
> <<
>
> Actually, the causes of tinitus are well-known and understood.
>
> Go here for an 
> explanation:http://hcd2.bupa.co.uk/fact_sheets/Mosby_factsheets/Tinnitus.html#3
>
> Steve
>
> On Nov 22, 8:58 am, dboots <[EMAIL PROTECTED]> wrote:
>
>
>
> > Matty  I hear birds and crickets too.  But the cricket sounds I hear,
> > is a bonavide
> > recording.  I suspect it is meant to try and cover up the the diesel
> > type engine noise and the rising static sounds of frequency noises
> > that is in the air of
> > where I live.  It's like a pulsed harmonic rythm recording of a
> > semblance of
> > the noise of crickets.  But it isn't real.
>
> >   I actually recorded the fake cricket sound one night. Of the other
> > observers, or hearers of the sound that night I recorded it, it seemed
> > to be coming from the higher branches of our frontyard tree.  And the
> > other observers, and hearers on that night all agreed crickets don't
> > live in trees, and then the cricket recording
> > paused on its last note, and the 3 other people standing there (who I
> > did not
> > know), as well as me, we all knew that last note that paused too long
> > was
> > no cricket.
>
> >   But this cricket recording that we were hearing, was like a looped
> > feedback or something like that.  I had heard it many times before
> > that night and felt it
> > was a recording.  But on that night, I knew it without a doubt.
>
> >   My belief is the ringing in the ears is just another form of the
> > hum, just a
> > different level of frequency.
>
> >   After 30 odd years of studying it, they still can't prove how or why
> > this
> > label of tinnitus is coming about.  All they really know is, the theme
> > is
> > ringing in the ears.
>
> > On Nov 21, 1:41 pm, Matty F <[EMAIL PROTECTED]> wrote:
>
> > > On Nov 21, 11:32 pm, Trev <[EMAIL PROTECTED]> wrote:
>
> > > > Dr. Geoffs' assuming we all have LF Tinnitus ( or should that be
> > > > Tinnytus for Oz?) is very patronising.
>
> > > Correct, and he's quite wrong in his assumption. A person with
> > > tinnitus would hear a similar noise wherever they went. The Hum is
> > > different in different locations around the world.
>
> > > > I have excellent hearing like you, Matty.
> > > > I have some technical expertise ,but not ehough resources or time
> > > > currently for the Hum work needed.
> > > > It is very elusive and also ,as you say, easily masked by random
> > > > extraneous noise of varying kinds.
> > > > That doesn't 'excuse' the Hum though.
> > > > The big question is do YOU hear anything other than the extraneous
> > > > noise that could be labled Hum?
>
> > > I don't understand what you are asking. Clearly I hear the sound of
> > > distant birds and crickets. I have not heard any Hum that is not
> > > explained by a ship's generator. I've camped the night out in the
> > > countryside where the silence at night is astounding.
>
> > > > I remember a poster from earlier days this forum mentioning a group in
> > > > the wilds all hearing a HUum that was persisting.
> > > > Could that REALLY have been a long distance motor and would they all
> > > > have SUCH good hearing co-incidently?
> > > > Not in my book ,Matty.
>
> > > That kind of hum is certainly hard to explain. But the low frequency
> > > part of the noise from a large motor could travel a very long way.
> > > Here in NZ, it's quite possible that someone has a generator within 20
> > > miles.
> > > I am able to detect the direction that sounds are coming from. It
> > > should be just a matter of going to a variety of locations and
> > > plotting the directions on a map.
>
> > > > c) You are assuming the Hum can be readily found. I think JD will
> > > > disagree there.
>
> > > The Hum that I heard was not easily found. At 2am I started by driving
> > > in the direction of the Hum. As I got closer the Hum was muffled by
> > > general noise at the port where the offending ship was moored.
> > > From a hill 200 metres from the port, I could hear the same noise that
> > > I was able to record at my home 2 kilometres away. There was a great
> > > deal of other higher frequency noise which made a recording close to
> > > the ship almost impossible.- Hide quoted text -
>
> - Show quoted text -
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