Why are some people left
handed?
Most
of the people in the world do most of their work with the help of their right
hands; but 4% of the world population is left handed. If we go through the
history of mankind we find that many of the great men of the world have left
handed. The world famous sculptors Leonardo Ad Vinci and Michelangelo both were
left handed. Parents of the left handed children usually feel worried about
this habit and make efforts to correct it. But psychologists believe that if a
child is a left handed he should not be forced to hanger this habit.
People whose right hemisphere of the brain is dominant are left-handers
If we examine the constitution of the body carefully we
will notice that our body is not fully symmetrical. There is a little asymmetry
between the left and right side of the body. Generally right side of the body id
lightly heavier than the left parts. Even the functions of these parts are somewhat
different. Usually the left half of the brain is predominant over the right
half. In such cases, the nerves from the brain cross over at the level of the
neck and go to the right side of the body. Such persons are right handed. Most
people of the world fall under this category. But there are cases where right
half of the brain is predominant over the left, nerves coming our of the brain
pass on to the left parts of the body. Such people perform all their functions
with their left hands. That is why some children write and even eat food with
left hand.
Have you wondered why left hander’s are in such a
minority in comparison to the right hander’s? Scientists have not been able to
solve this riddle till now. Since the number of right hander’s is so large, the
door handles, locks, screwdrivers, and motorcars, musical instruments all are
designed keeping in view the convenience of the right hander’s. Even buttons
are fixed on the right side for the same reason. The left handed people
experience some difficulty in handling all these but get used to the functions
with a little effort.
No comments:
Post a Comment