Right and Left brain concept
In the cerebral cortex, the left hemisphere
is connected to the skin receptors in the right half of the body. It also
controls the muscles on the right side of the body.
The right hemisphere is connected to the
sensory receptors on the left half of the body. Further, it controls muscles on
the left side. Both the hemispheres are also connected to the eyes. The sensory
nerve tracts of the left eye is connected to the right hemisphere and the right
eye to the left hemisphere through the optic chiasma. Thus the left half sees
the right half of the world while the right half sees only the left half of the
The left and right hemispheres exchange
information through a set of axons called the corpus callosum, and also through
anterior commissure and hippocampal commissure. The two hemispheres have their
own specific functions and the above division of functions or labour between
the two hemisphere is called 'lateralization'.
The corpus callosum enables the right and
left half of the brain to operate cooperatively, instead of independently. The
anterior commissure plays an important role in unifying the emotional responses
of two sides of brain. Damage to the corpus callosum blocks the exchange of
information between the two hemispheres.
The left brain is concerned with language,
number skills, reasoning, spoken language, scientific skills and right hand
The right brain is concerned with art
awareness, imagination, visual functions, emotions, music awareness, 3D forms and
left hand controls. The left brain is meant for analytical tasks while the
right brain is for creative tasks.