Final pointing position observed in combined conditions (solid lines) and associated predicted data (black dotted line) by the body-centered model.

<p><b>a</b>) Combined condition <b>B_fwdS_fwd</b> and predicted data by the unweighted sum. <b>b</b>) Combined condition <b>B_fwdS_bwd</b> and predicted data by this unweighted sum. Vertical bars denote positive standard errors. *: p<.05; ‡: p<.01; †: p<.001.