Figure 6.
Report errors in Experiments 2 and 3. A, In Experiment 2, participants completed a static estimation task in which the sensory cues were displaced orthogonal to the primary direction of movement. Data from a single subject performing unimodal V and P trials (left panel) and bimodal VPV and VPP trials (right panel) are shown. Thick lines reflect the average movement for each condition across trials. The cued endpoint location is indicated by a black x. B, The average reported endpoint positions for each participant in Experiment 2 (thin lines) are shown along with the group mean (thick lines), for visual (V and VPV, red) and proprioceptive (P and VPP, blue) trials. Overall, participants exhibited a bias in report error on bimodal trials relative to unimodal trials when reporting the location of both visual and proprioceptive cues. C, In Experiment 3, participants completed a dynamic estimation task in which the sensory cues were displaced on the same side of the midline, causing movement paths to be curved in the same direction. Single-subject data are shown for unimodal (left panel) and bimodal trials (right panel). The cued midpoint location is indicated by a black x. D, Average reported midpoints for each participant (thin lines) are shown along with the group mean (thick lines). Participants did not exhibit any significant bias in report error on bimodal trials relative to unimodal trials when responding to either the visual or proprioceptive cues. All units are in meters.