A construction of H-reflex detectable instrument and the recording program

A construction of stimulation, capture, and display device for the Hoffmann reflex (H-reflex), which has applications in assessment of nervous system pools, is presented. The devices have been designed to be an easy approach for eliciting and measuring the H-reflex. Constant-current stimulator using low-cost standard high voltage components have been constructed to evoke the H-reflex response and to be incorporated into a computer based reflex data acquisition system. LabVlEW program is then used for sending the appropriate commands to control acquirement, display and record of the H-reflex.