Scientist and researchers have found the genetic variances for the first time related to left-handedness. They found this characteristic in about ten percent of the human population. The left-handedness comes with the variation in genetic, which resulted in brain structure difference. The study shows that left-handed individuals have better communication and verbal skills as compared to right-handed individuals.
The previous study about the twins resulted that the genes of the particular individual are at least moderately responsible for handedness controlling. Scientists from the University of Oxford conducted a new study. They identified that variations in genetics are responsible for the separation of left-handedness to right-handedness. An article published in the Journal of Brain by a Medical Research Council fellow Akira Wiberb from University of Oxford gave insights on this topic. This study suggested the best possible correlation between superior verbal skills and left-handedness in the individual.
The study also stated that all left-handers would not be similar as these differences only noticed in averages over a large number of sample size of people. This result leads to interesting possibilities for further studies regarding left-handers. Also, it leads to fascinating facts about verbal task performance. Mr. Gwenaëlle Douaud is a fellow at Oxford’s Wellcome Centre for Integrative Neuroimaging and joint senior author of the study. According to Mr. Douaud the analysis for potential benefit must be conducted further. In the study, scientist analyzed brain imaging of about 10,000 individuals. They concluded that left-handers genetic variants are associated with variances in the white matter tracts of the brain. The tracts which connect areas of the brain related to language are the white matter tracts. The study also specified a co-relation between the characteristics of brain development associated with handedness. Another study also stated that there is more probability of schizophrenia in the left-handers amongst patients as compared to general population. However, there is less probability of Parkinson’s disease in the left-handers amongst patients as compared to general population.