I
live in a very rural area, that experiences minimal traffic noise or
other urban disturbances. In fact, many friends consider it to be the
far-out boonies. I need the tranquility. Over the last few decades
researchers have documented many ill effects that society's noise has
on people. Epidemiologists have shown a high correlation between
noise and high blood pressure, heart disease, sleep loss, and immune
system damage. Five years ago the UN's World Health Organization
found that some 340 million Europeans (a bit more than the population
of the US) annually lose over a million years of healthy life, due to
noise. That's one hell of a toll!
Noise
pollution has been recognized for a couple of generations as having a
deleterious impact on human health and well being. As a person who
built a career on studying the mechanics of noise reduction, I'm not
at all surprised at the negative impact of noise on people. It's what
my career was all about! It's also a major reason why I took leave of
the urban life three decades ago and sought refuge and a healthier
(and quieter) life in the woods of Appalachia.
I
sought solace in the quiet I found out here. I avoid noisy
machines—rototillers, tractors, and other small engine devices—in
favor of doing as much by hand as possible. It is not only cheaper
and more peaceful, but gives my body the exercise that it needs.
I
have written before on this blog about my desire for tranquility and
solitude. In quiet moments I seek calmness, I tune into inner
thoughts, I can even come to sense the oneness of existence. I have
found quiet to be soothing and healing—especially knowing that
noise is unhealthy. The root of the word noise is the Latin word
nausea, meaning “seasickness.” (The Latin word naus
means “ship.”)
But
that reasoning suggests that quiet (or silence) is primarily an
escape from something. It's replacing a “thing” with “no
thing.” Quiet, in this sense, is just an absence of noise; silence
is just the lack of sound. Is silence really just a negative entity?
The
key here is what's going on in the brain—our ultimate sensory
response either to noise or quietness. The science of brain scans has
exploded in recent years and is providing lots of evidence of what's
going on in the brain, as it responds to various sensory inputs. Some
recent research is showing that activity in the brain is stimulated
by silence, just as much as when we hear sounds. A certain network of
neurons lights up when sounds are heard, but quite a different set of
neurons fires when quiet ensues. So the brain is just as active when
quiet prevails. To the brain, silence is not a negative entity.
Mental work is happening then too.
These
recent findings fuel my need for quiet even more. Where silence once
represented an escape from a clamorous world for me, I have come to
see that it's not an escape from, but a coming to
something: a state wherein my brain stays engaged—but no longer in
an unpleasant way. It's now active in an agreeable and even creative
way. In fact, it's doing the healthy work of silence. As Paul Simon
wrote over 50 years ago,
And
the vision that was planted in my brain
Still
remains
Within
the sound of silence.