Studies of stimulus-evoked responses in single motoneurones in humans

Surface electromyography (EMG) has been a powerful technique for studying r eflex and other stimulus-evoked responses in the human nervous system. Howe ver, important additional insights can be gained into the operation of neur al circuits by studying the responses of single motor units to various stim uli. In this paper, some of the advantages of single motor unit recording w ill be canvassed, and some examples of the application to this method to th e study of reflex responses to sensory stimuli and brain stimulation will b e presented. (C) Elsevier, Paris.