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. 2012 Oct 24;109(4):1126–1139. doi: 10.1152/jn.00751.2012

Fig. 5.

Fig. 5.

Response to position perturbation. Adding feedback of only muscle spindles led to substantial end-point errors. The error depended on the gain that was set and the reference CE length that was set (see also discussion). With combined feedback of muscle spindles and GTOs, responses did not show end-point error and took >50% less time to arrive at the end point with zero velocity than without feedback. φ, Joint position.