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Path: utzoo!watmath!clyde!cbosgd!ihnp4!houxm!vax135!cornell!uw-beaver!tektronix!hplabs!pesnta!amd!amdcad!cae780!weitek!mmm
From: mmm@weitek.UUCP (Mark Thorson)
Newsgroups: net.med
Subject: Re:  Uneven Hearing
Message-ID: <312@weitek.UUCP>
Date: Sun, 27-Oct-85 15:29:23 EST
Article-I.D.: weitek.312
Posted: Sun Oct 27 15:29:23 1985
Date-Received: Wed, 30-Oct-85 05:37:58 EST
Organization: Weitek Corp. Sunnyvale Ca.
Lines: 34
Keywords: Right-handed, left-eared

The posting about uneven hearing brought to mind an observation I had.
I was watching a PBS television pledge drive where they had many people
talking on phones.  As I am left-handed, I decided to count the lefties.
At first, it appeared they were all lefties.  But then I noticed that
people were using their left ears, but writing with their right hands.
There were a few lefties writing with their left hands, but they also used
their left ears.

Some months later I read an article in the Wall Street Journal where they
were discussing public phones and phone booths.  A Bell employee was quoted
as saying the booths are designed for people to use their left hand for holding
the receiver because people want to have their right hand free for writing.

From my previous observation, I knew this was incorrect.  The lefties I saw
propped the receiver up with their left shoulder and wrote with their left
hand.

I have sinced noticed a few people who use their right ear for the phone.
Many of these people are left-handed, and those who are right-handed are
very often people who were forced from left-handedness to right-handedness
as children.

Another observation I have had about the asymmetry of the nervous system
concerns color vision.  For a while, I did a lot of color photography.
This made me sensitive to subtle casts of color (called color temperature).
To make a "normal" looking photo, you have to adjust the color temperature
for the subject, the source of light, and the film.  If your color temperature
is too high, the photo has a bluish cast.  Too low, a yellowish cast.

My observation is that my eyes each have a very slightly different color
temperature.  If I switch between them, I notice my left eye has a lower
color temperature than my right.

Mark Thorson   (...!cae780!weitek!mmm)