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The Feeling Of Sound
Reported December 15, 2011
NEW YORK (Ivanhoe Newswire) --We hear and touch, and always thought they
were separate and distinct senses. But now there’s proof you may be able to
hear with something other than your ears. Listen to this unique experiment
that shows just how much we still don’t know about the human brain.
It looks like the work of a mad scientist. First a cap is fitted on her
head. Next, what looks like torture. A syringe is pushing gel through the
holes where probes will be inserted to measure brain activity. All this, so
City College neuroscientist and psychologist Tony Ro can prove his theory.
“What we’re hoping to find and measure is how sound actually enhances the
way people feel information on their skin,” Dr. Tony Ro, a professor at City
College in New York City told Ivanhoe.
In a sound proof room graduate students set up. This student will hear
sounds (tones actually) while also getting faint touches to her skin. She
clicks when she feels something.
“What’s being shown is on the monitor is the electrical activity of the
subject’s brain,” Dr. Ro explained.
Professor Ro monitors from an adjacent room.
“In many experiments we’ve been finding that brain areas that are involved
with processing how we hear and how we feel are very heavily
interconnected,” Dr. Ro said.
Take a mosquito buzzing around your ear for an example. Just hearing the
sound heightens your sense of touch as you anticipate the bug landing on
your skin. Because of the way that our brains are cross wired, the loss of
one sense like hearing may be compensated with another.
“We may be able to vibrate their skin in replacement of sound,” Dr. Ro
explained.
Ro is working with a patient left disabled by a stroke. She lost the ability
to feel on one side of her body. Yet a new ability was awakened.
“It seems as though the hearing portions of her brain started to take over
the region of her brain that was normally feeling information,” Dr. Ro
concluded.
Exploring sound and touch on the journey to understanding the human brain.
Dr. Ro says tens of millions of people suffer from one form of sensory loss
or another. But if we can replace hearing loss with touch information, we
can use skin vibrations to convey information that is normally provided by
hearing.
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