Cognitive load-dependent effects of HD-tDCS on the executive vigilance decrement: insights from aperiodic EEG activity.

For the Baseline Offset, the EV Trials × Baseline Aperiodic Offset (1–35 Hz) interaction showed a trend toward the same effect observed for the exponent, χ 2 (1) = 3.13, p = 0.077, suggesting that larger values of the offset at baseline in the 1–35 Hz range could be associated with a steeper EV decrement (i.e., a decrement in accuracy in EV trials) with time-on-task, as shown in Figure 8C .

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