Error-independent effect of sensory uncertainty on motor learning when both feedforward and feedback control processes are engaged
Fig 2
Experimental protocols: Example adaptation phase trial conditions.
(A) Experiment 1: Midpoint-only feedback (large uncertainty). (B) Experiment 2: Matched midpoint and endpoint feedback (low uncertainty). (C) Experiment 3: Unmatched midpoint (moderate uncertainty) and endpoint (low uncertainty) feedback. Bottom, middle and top slides represent start, middle and end of reach respectively. coloured panels represent the possible uncertainty conditions (blue: σL, orange: σM, green: σH, red: σ∞). The example condition applied is outlined in black. In all experiments, a no-feedback washout phase followed the adaptation phase.