RT Journal Article SR Electronic T1 Erector spinae muscle responses while standing. JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 73 OP 78 DO 10.1136/jnnp.44.1.73 VO 44 IS 1 A1 Ertekin, N A1 Ertekin, C YR 1981 UL http://jnnp.bmj.com/content/44/1/73.abstract AB In 55 normal adult subjects standing erect, stable EMG responses could be recorded from the lumbar erector spinae muscles in response to unilateral sudden are abduction produced by single electrical stimuli applied to the brachial plexus at Erb's point, or to knee and ankle movement produced by stimuli to the posterior tibial nerve in the popliteal fossa.