Conducting Polymer?Ionic Liquid Electrode Arrays for High?Density Surface Electromyography

Surface electromyography (EMG) is used as a medical diagnostic and to control prosthetic limbs. Electrode arrays that provide large-area, high density recordings have the potential yield significant improvements in both fronts, but need remains largely unfulfilled. Here, digital fabrication techniques are make scalable electrode capture EMG signals with mm spatial resolution. Using electrodes made of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) composites biocompatible ionic liquid (IL) cholinium lactate, enable quality spatiotemporal from forearm volunteers. These allow identify motions index, little, middle fingers, directly visualize propagation polarization/depolarization waves underlying muscles. This work paves way for cutaneous electrophysiology personalized medicine highly articulate prostheses.