Sentence structure modulates latency of PD response. A, PD in the HL condition across experiments. Significant differences between experiments are indicated by the gray horizontal lines. B, PD in the LL condition across experiments. Significant differences between experiments are indicated by the gray horizontal lines. C, HL-LL Difference between experiments. Green horizontal line, Experiment 2 difference when compared with zero. Purple horizontal line, Experiment 1 difference when compared with zero.