A New Look At Einstein’s Brain (2012)

"It’s possible that the increased number of folds and fissures in Einstein’s prefrontal cortex contributed to his ability to carry out his famous thought experiments, such as imagining himself traveling alongside a beam of light."

"The photos also showed a part of Einstein’s right somatosensory cortex was enlarged. The area, which processes sensory information from the left hand, is thought to have overdeveloped due to his extensive violin playing."

In one paragraph, they assume that the 'shape' of his brain was responsible for his abilities, in the next paragraph they talk about how his learned abilities changed the shape of his brain...