Fig. 5: Fatigue modulates the neural effects of tRNS on prestimulus oscillatory power but not hemodynamic or behavioral outcomes. | Communications Biology

Fig. 5: Fatigue modulates the neural effects of tRNS on prestimulus oscillatory power but not hemodynamic or behavioral outcomes.

From: Enhancing visual perception by modulating prestimulus alpha and beta power with tRNS

Fig. 5: Fatigue modulates the neural effects of tRNS on prestimulus oscillatory power but not hemodynamic or behavioral outcomes.The alternative text for this image may have been generated using AI.

A Despite the visually larger HbO amplitude in low fatigue compared to high fatigue in Block 5 for tRNS (Pr < 97.5%, see Supplementary Table 10), no significant differences in HbO amplitude were observed between fatigue states under either condition. The inset plot with a gray background displays fitted individual data points. B Under tRNS, prestimulus alpha power was significantly lower in low-fatigue compared to high-fatigue states in Blocks 4 and 5; no such difference was found under sham. C Beta power showed a similar pattern, with significant fatigue-related suppression only under tRNS. D VCT did not differ between fatigue states in either condition. These results suggest that fatigue modulates neural responsiveness to tRNS in the oscillatory domain, while hemodynamic and behavioral measures remain stable.

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