Overall, they found that the less fit people were, the weaker their brain's white matter connections, and the worse they did on the cognitive tests. (businessinsider.com)
Specifically, these men had altered development of white matter connections in the left side of the brain, the arcuate bundle, which is involved in language. (sciencedaily.com)
SSRI group infants also had «a significant increase» in white matter connections between those two regions, relative to the other groups. (health.com)