The sharpness or dullness of a
person's brain depends on the genetic make-up of the family, say
researchers from the University of Melbourne, Neuropsychiatry Centre.
Lead author, Alex Fornito said, "The
findings have a bearing on why some people are better at certain tasks than
others and also the genetic basis of mental illnesses. The brain is an
extraordinarily complex network of billions of nerve cells interconnected
by trillions of fibers. The brain tries to maximize its bang-for-buck by
striking a balance between making more connections to promote efficient
communication and minimizing the 'cost' or amount of wiring required to
make these connections."
Scientists hope that this
research may be helpful for uncovering the specific genes that are
important in explaining differences in cognitive abilities, risk for mental
illness and neurological diseases like schizophrenia and Alzheimer's