Figure 1

Overview of system setup, movement generation and electrode placement. (a) Shows the system overview with the actual motion creation module presented as pressed on the arm. The lit LED indicates the applied force is in the desired range. (b) Depiction of how the servo rotation is translated into lateral movement of the electrode. Depicted are a back and forth servo rotation of 15 degrees and the x- and y-axis displacements of the electrode (c) The rotation/motion pattern applied by the servo. (d) A close up of the servo rotation pattern of the largest rotation magnitude. Of the shown peaks, the second peak has a one second pause at both ends; the last pause is not shown. (e) The graph shows how the rotational pattern of the servo shown in Figure 1d translates into x-axis and y-axis motion. Green line is the magnitude of x-axis displacement; red line is the y-axis displacement. (f) The electrode setup for the impedance measurement and the biopotential recording in solid outline and dashed outline, respectively.