Fig. 2.
(a) Typical transient characteristics of the FSCV total current before (dashed) and after (solid) introducing dopamine, indicating the presence of a large background current. (b) Concept of region of interest (ROI), in which a large potion of the background current is removed at about the redox potentials using a constant current. (c) Architecture of our FSCV readout channel. (d) We use a three-electrode configuration for applying the FSCV voltage waveform to the WE.