One of the more mysterious and less-explored observations about human anatomy is also one of the oldest, going all the way back to the Father of Medicine.
"If the wound be situated on the left side [of the head], the convulsion attacks the right side of the body," Hippocrates noted in the 4th century B.C. The Greek physician recognized that trauma on one side of the head could cause a seizure limited to or, more likely, starting in the limbs on the opposite side of the body.
Why does the right brain control everything on your left and vice versa?
Was wondering about this Q when I read about decussation (or decussatio)(used in biological contexts to describe a crossing) of nerve/tract in medulla oblongata.
from my quick search using uncle google, two possible explanation :
1. the physics of optical lenses
2. the emergence of limbs as a means of locomotion
number one is easy to explain. when an optical lens forms an image of an object, it inverts and reverses it. Bottom becomes top, right becomes left. When the lens of the eye projects an image on the retina, it depicts a world 180-degrees reversed from reality. The brain must compensate if it wants to get an image of the world as it exists. so, we have the right brain controlling the left etc.
second one is a little hard to explain but i have located a site that do the explanation here.
since they are not going to test me on this, why waste my time on this right?
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