Why does this midline even exist?.....the neurological approach

Why does this midline even exist?.....the neurological approach

The body's midline is a concept of visualization and revolves around the structural and functional anatomy of brain. Our brain that we consider as a single organ is actually made up of two separate hemispheres: the left and the right hemispheres, separated by a structure called longitudinal fissure.

But the two hemispheres are not actually separable as they are connected by a structure called corpus callosum. It relays information from the left hemisphere to the right hemisphere and vice versa serving as a big information highway between the two hemispheres of brain.

So as an irony, we have two separate brain hemispheres which are actually not separate but connected.... why so? So the two hemispheres, or the left and right brain are actually responsible for proper functioning of the body. The left side of the brain is responsible for controlling the right side of the body. It also performs tasks that have to do with logic, such as in science and mathematics. On the other hand, the right hemisphere coordinates the left side of the body, and performs tasks that have do with creativity and the arts. Both hemispheres are connected by the corpus callosum and serve the body in different ways. 

Therefore, the entire body and brain actually have two interconnected halves. As in brain the corpus callosum serves the function of inter-connectivity and interdependence, on physical level, the midline crossing activities serve the function of connecting the two halves of body and stimulate integration of left brain with right body and vice versa. 

 Midline activities are important to help coordinate the two sides of the body together and encourage communication between the right and left sides of the brain. Bilateral coordination is an important step in developing midline crossing.

 Development of bilateral skills, both symmetrically and asymmetrically, helps in development of midline crossing begins. 

A child with midline crossing difficulty, finds it difficult to integrate the two halves of body and brain and as a result each side of the body tends to operate on its own. Children who avoid crossing the midline work the right side of the body with the right hand and the left side of the body with the left hand or they turn their body to avoid crossing the midline. This interferes with the normal development of a dominant hand and makes bilateral motor tasks very difficult.

More in the series... .Why does midline evolve?.... .Coming next Friday.....

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