RT Journal Article SR Electronic T1 Electrical Activity of the Nervous System JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 1030 OP 1030 DO 10.1136/jnnp.40.10.1030-a VO 40 IS 10 A1 Ballantyne, J. P. YR 1977 UL http://jnnp.bmj.com/content/40/10/1030.2.abstract AB