Fig. 2

Pseudo-colored maps of the electrical stimulation-evoked changes in APC over the cortical surface at 530 nm. a Spatial distribution of APC overlaid with the initial cortex image as estimated at the beginning of the pre-stimulation phase (10th s of the trial). b APC mapping during stimulation (30th s of the trial). The color bar on the right shows APC as a percentage, which is the same for both panels (a) and (b). Colored squares show the position of selected regions (big regions of interest) in which changes in mean APC were assessed to monitor the parameter’s dynamics