Approximately 50-70% of very preterm (VPT) born infants are affected by diffuse white matter abnormalities such as loss of white matter volume, corpus callosum thinning, and delayed myelination. A recent study showed that the mean score on language tests at the age of 4 and 6 years significantly declined as the severity of white matter abnormalities increased. This is mainly because corpus callosum plays a crucial role in exchange of interhemispheric information, thus a deviation impacts the cognitive performance