Color plots illustrating forelimb (LF, left forelimb; RF, right forelimb) and hindlimb (LH, left hindlimb; RH, right hindlimb) paw speed (warmer colors indicate higher speed) in two example mice before, during and after PPN stimulation in D2-cre mice with a 470-nm laser (10-s train, 20 Hz, 10-ms pulses, K, 12% and L, 31% of laser power). On the left in (K) and (L), the dashed rectangles correspond to the magnifications on the right.
