title: A method for detecting functional weakness.
abstract: A simple electrophysiological method is described for detecting weaknes of psychiatric origin. The method involves the interpolation of a single indirect stimulus to a muscle during the course of a supposedly maximal voluntary contraction. Incomplete motor activation is revealed by the presence of a twitch superimposed on the recording of voluntary torque.
mesh_terms: D000842:Ankle / Q000294:innervation; D003937:Diagnosis, Differential; D004558:Electric Stimulation; D004576:Electromyography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009046:Motor Neurons / Q000502:physiology*; D009119:Muscle Contraction; D009123:Muscle Hypotonia / Q000175:diagnosis / Q000523:psychology*; D009132:Muscles / Q000294:innervation; D010543:Peroneal Nerve / Q000503:physiopathology; D011602:Psychophysiologic Disorders / Q000175:diagnosis* / Q000523:psychology; D011999:Recruitment, Neurophysiological; D013979:Tibial Nerve / Q000503:physiopathology