Fig. 2From: Standardizing fatigue-resistance testing during electrical stimulation of paralysed human quadriceps muscles, a practical approachElectrode configurations. A graphical representation of the electrode placement for the individual electrode configurations. All configurations had a common anode (white “ + ” electrode) which served as reference electrode. Individual stimulation channels are marked by different colours. Numbers on the electrodes, indicate the sequential order of pulses delivered during distributed stimulation. The motor-points used for orientation of the electrode configuration are displayed with red-circlesBack to article page