Locally introduced rules, based on discussions among the SRC staff and outside consultations are indicated by an (*).
Scoring sleep stages
Scoring sleep stages is based on the guidelines specified by Rechtshaffen and Kales. When guidelines were adopted from other sources, the source is marked in parenthesis. M.C. & A.R refers to Section 7, Chapter 73: Monitoring and Staging Human Sleep, written by M.A. Carskadon and A. Rechtschaffen, in Principles and Practice of Sleep Medicine ed. by M.H. Kryger, T.Roth and W. Dement; W.B. Saunders Co, 1989 (1st edition).