Jeremy Schmahmann, then a neurology resident at Boston City Hospital, also developed a fascination for the cerebellum around that time. His interest stemmed from emerging evidence that another part of the brain once thought to be involved solely in motor control—the basal ganglia—also contributed to cognition. This led Schmahmann to wonder whether the same could be true of the cerebellum.
To address this question, Schmahmann set out on what he describes as an “archeological dig” through the stacks at Harvard’s Countway Library of Medicine. There, he discovered manuscripts dating to the 1800s documenting instances of cognitive, social, and emotional impairments in patients with cerebellar damage—and in rare cases where people were born without a cerebellum at all. “There was a little counterculture going back right to the beginning that was completely neglected,” says Schmahmann, now a neurologist at Massachusetts General Hospital