The New York Post reports on parasomnias.

The couple sought help from Dr. Guy Leschziner, a neurologist who leads the Sleep Disorders Center at Guy’s Hospital in London. As Leschziner recounts in his new book, “The Nocturnal Brain: Nightmares, Neuroscience, and the Secret World of Sleep,” (St. Martin’s Press), out Tuesday, Tom had “a remarkable propensity to exhibit both waking and sleeping activity at the same time.”