case_images: PMC6759570_01
case_images: Experimental procedure outline.
case_images: fnhum-13-00314-g0001.jpg
case_images: PMC6759570_01_fnhum-13-00314-g0001.jpg
case_images: F1
case_images: This block of stimulations was practiced five times, thus covering a period of nearly 8 months (Figure 1).