The Impact of Rectification on the Electrically Evoked Long-Latency Reflex of the Biceps Brachii Muscle

Introduction: For long latency reflex (LLR) recordings full wave rectification (FWR) is recommended [1], although its usefulness has not been proven. Objectives: (1) To investigate the impact of FWR on amplitude values of synthetic signals and original bioelectric signals (LLR). (2) To find out whether FWR is a necessary step before averaging LLR responses. Materials & Methods: LLR were elicited electrically and recorded simultaneously with FWR and without in 10 healthy subjects. After single or train stimuli (sensory radial nerve; interstimulus interval 3 ms), amplitude values were measured over the bent biceps…