Roth G, Soichot P
Division of Clinical Neurophysiology, University Hospital, Geneva, Switzerland.
Electroencephalogr Clin Neurophysiol. 1995 Jun;97(3):155-8. doi: 10.1016/0924-980x(94)00296-j.
Single F waves evoked by stimulation with above threshold intensity are cancelled by a second shock, as was previously demonstrated with maximal or sub-maximal intensity. Double stimulation of any intensity thus makes it possible to detect a possible reflex component in the spinal response, by elimination of the F wave. As an H or a heteronymous H reflex may be a sign of a disordered central motor system state, this fast method has a direct clinical utility.
