Severance , which imagines a world where a persons work and personal lives are surgically separated, returns Friday for its long awaited second season. While the concept of this gripping piece of science fiction is far fetched, it touches on a question neuroscience has been trying to answer for decades: Can a persons mind really be split in two? Remarkably, “split brain” patients have existed since the 1940s . To control epilepsy symptoms, these patients underwent a surgery to separate the left...
