plexon inc, data acquisition, neural data acquisition, neural data analysis, hardware, software, neurotechnology, neuroscience, electrophysiology, neurophysiology, neural data visualization, spike sorting, multi-channel spike sorting, field potentials, offline spike sorting, electrode, electrode drives, headstages, headsets, preamplifiers, dsp, digital signal processing, extracellular spike and field potential signals, extracellular recording, harvey wiggins, harvey box, harveybox, sherman wiebe, craig patten, erik nilsen