Reminiscent of the works of the late British neurologist Oliver Sacks, Leschziner’s new book, The Nocturnal Brain: Nightmares, Neuroscience, and the Secret World of Sleep, explores how the brain functions through the remarkable stories of his patients, reports The Globe and Mail.

In some respects, people have a very delayed path to getting a diagnosis or treatment because they don’t necessarily come forward. And some of the delays of diagnoses have to lie at the feet of physicians because as a community, historically, we have been very, very poor about knowing anything about sleep. Even now, the average teaching in medical school about sleep is about two to four hours.