It is not easy to be a Vedic Pandit.
Professional Vedic Pandits undergo rigorous training in exact pronunciation and invariant content of these oral texts for 7 or more years, with 8–10 h of daily practice (totaling ~10,080 h over the course of the initial training), starting in their childhood, and mastering multiple 40,000 to 100,000 word oral texts (compared to ~ 38,000 in the book of Genesis). The training methods strongly emphasize traditional face- to-face oral learning, and the Yajurveda recitation practice includes right hand and arm gestures to mark prosodic elements.
There are special exercises to ensure that the Vedas are chanted without mistakes. Now a new study shows that such intensive study changes the brain both in the white matter and gray matter. Extensive memorization and verbal recital practice resulted in the following changes
We found massive gray matter density and cortical thickness increases in Pandit brains in language, memory and visual systems, including i) bilateral lateral temporal cortices and ii) the anterior cingulate cortex and the hippocampus, regions associated with long and short-term memory. Differences in hippocampal morphometry matched those previously documented for expert spatial navigators and individuals with good verbal working memory. The findings provide unique insight into the brain organization implementing formalized oral knowledge systems.