Normal hypocretin-1 (orexin-A) cerebrospinal fluid level in a previously reported case of severe, life-long insomnia with motor hyperactivity Normal hypocretin-1 (orexin-A) cerebrospinal fluid level in a previously reported case of severe, life-long insomnia with motor hyperactivity Download Non-dreamers – Volume 4 Issue 3 Preliminary observations on the effects of sleep time in a sleep restriction paradigm