is caused due to impairment in the brainís ability to translate images received
from the eyes or ears into understandable language.
has been proved that the brain of a dyslexic person develops differently from
that of others. Studies have shown that the
inborn wiring system of the brain related to developing mental skills is
different in dyslexics and this is the base cause of dyslexia.
The wiring system of the brain or the neural pathway is the process that codes
the information the sensory organs receive and stores it in the brain for
future assimilation. This information is later used to assess situations and
develop response patterns to the situations, increase the muscular
co-ordinations according to the situations, or even help us in understanding
and comprehending the constant inputs our brain is getting in terms of everyday
activities, school procedures etc.
In a dyslexic child, even these minor acts of comprehension and usage may take
a lot more time and skill than a normal child.
Hence, one school of thought has concluded that
dyslexia is a condition that is largely inborn and not the result of poor
parenting or environment.
school of researchers strongly disagree and believe that while dyslexia may
sometimes be inborn, it is often due to lack of phonics training while learning
to read and the preponderance of the whole language system.
In one of the theories about dyslexia, researchers Geschwind and Galaburda had
suggested a link between raised
testosterone levels in pregnant mothers during the first trimester that may
lead to a variant brain structure, and dyslexia.
In other studies, dyslexia had been
linked to genetic reasons
. According to research conducted by M. M. Nothen
and others, the inability to learn
spellings can be linked to a gene called 15q21 of chromosome 15