Apparatus and Method for Polyphasic Multi-Output Constant-Current and Constant-Voltage Neurophysiological Stimulation

A stimulation module configured to generate and deliver an electrical stimulus comprising at least one stimulation pulse, the stimulation module comprising:

• a plurality of output ports adapted to connect to a plurality of stimulation electrodes;
• a controller, wherein the controller is configured to simultaneously activate any combination of the plurality of output ports and is configured to set any of the plurality of output ports to being either an anode or a cathode;
• an adjustable voltage converter, wherein the adjustable voltage converter is configured to raise or lower an output supply voltage;
• a pulse generator comprising:
• a constant current sink adapted to enable a setting of an intensity of an output current of the stimulation module;
• a current intensity digital-to-analog converter adapted to generate voltage for the current sink that is proportional to the set output current intensity;
• trigger logic adapted to enable the stimulation module to switch between a plurality of current intensities;
• and
• a current sense circuit to measure delivered current;
• and
• a constant voltage source adapted to enable a setting of an intensity of an output voltage of the stimulation module.