RT Journal Article SR Electronic T1 YAWNING JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 203 OP 209 DO 10.1136/jnnp.21.3.203 VO 21 IS 3 A1 Barbizet, Jacques YR 1958 UL http://jnnp.bmj.com/content/21/3/203.abstract AB