Fig. 3. Customizable and reconfigurable DoS multielectrode arrays.
a High density DoS MEA on the wrist flexors of a human subject (left) and motor unit propagation from one row of the MEA (right). b The heatmaps of the root mean square (Vrms) of EMG signals obtained from DoS electrodes arranged in a 8 × 2 array alongside the FPC grid are shown to cover the forearm in both lateral and medial directions, aiming to concentrate the center of activity during three different hand gestures, including (1) hand closed, (2) middle and ring finger flexion, and (3) ring and little finger flexion. These gestures are displayed at the bottom of the entire figure. c The heatmaps of the Vrms of EMG signals obtained from DoS electrodes arranged in a 2 × 8 array beside the FPC grid are shown to cover the forearm in the proximal and distal directions. d The heatmaps of the Vrms of EMG signals obtained from DoS electrodes arranged in a 4 × 8 array beside the FPC grid are shown to cover the forearm in the distal direction. Reprinted with permission from Yu et al.9. Copyright 2023 National Academy of Sciences.