The slight turn out of the wall is sometime smaller than the animal body size, and may reflect no more then turning the head or the front part of the body, as in this example by a SOD1 mutant rat. This is hard to determine since the tracking system can only track the center of the rat image (center of dark blue circle).
		Another example by a SOD1 mutant rat that probably includes a turn of only part of the body.
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