Fig. 4From: Visual search under physical effort is faster but more vulnerable to distractor interferenceThe interaction effects and the difference in exerted grip force. The difference in the singleton distractor effect from low to high loads (i.e., the interaction effect in Fig. 3d) in τ (c), but not in μ (a) or σ (b), significantly correlated with the difference in exerted grip force from low to high loads (Δ%MVC: high–low load) across the participants. The solid and dashed lines represent the best linear fit and its 95% confidence interval. Pearson correlation coefficient (r) with 95% confidence interval and p value are presented in the figureBack to article page