NeuroTrac Simplex - Operation Manual NeuroTrac Simplex EMG Biofeedback - The NeuroTrac® Simplex is a single channel EMG [Electromyography] device that has been designed to use with a variety of applications in particular. https://biofeedback-neurofeedback-therapy.com/wp-content/uploads/Neurotrac-Simplex-Operators-Manual.pdf