Video 7. AIMs during reaching in a ‘ChR2 during’ rat during ‘laser on’ session 10 (same rat as in Video 6).

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The first segment shows an example of a non-dyskinetic reach. While the reach is hypometric, the motion is smooth. The last segment shows a reach during the same session in which dyskinesias interfered with the reach (limb amplitude score = 1). The red dot indicates moments when the rat is showing AIMs (paw is oscillating from left to right instead of moving towards or away from the pellet). Videos are shown at normal and 20% speed.