HD-tDCS facilitated and enhanced training-induced increases in frontal task-related theta, alpha, beta, and gamma power¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r2 · q3 · i3 large
Currency · newest study 2023 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i3 The active group's EEG power measures increased faster and stronger than the sham group's, with significant group-by-time interactions in alpha (4-back) and alpha and gamma (6-back). → Yufeng Ke 2023 q3 i3 In the 6-back task, gamma power group effect was significant at Post21 (η2p = 0.462) but not at Post1. → Yufeng Ke 2023 (2)

Evidence¶

Yufeng Ke 2023¶

Yufeng Ke, Shuang Liu, Long Chen, Xiashuang Wang and Dong Ming. (2023). Lasting enhancements in neural efficiency by multi-session transcranial direct current stimulation during working memory training. npj Science of Learning 8:48. https://doi.org/10.1038/s41539-023-00200-y

q3 · i3 · causal · r2

Mixed ANCOVAs on frontal task-related EEG power at Post-tests (4- and 6-back, N = 34) found significant group effects in all four bands for 6-back and a significant 4-back alpha group-by-time interaction (η2p = 0.277, p = 0.002), with the active group's power rising "faster/stronge r than the sham group".

"These statistical findings incorporating the results shown in Fig. 4 suggest HD-tDCS over the left dlP FC facilitated and enhanced the training-induced rise of the active group ’s task-related EEG activity from the Pre- to Post21-test."

Yufeng Ke 2023 (2)¶

Yufeng Ke, Shuang Liu, Long Chen, Xiashuang Wang and Dong Ming. (2023). Lasting enhancements in neural efficiency by multi-session transcranial direct current stimulation during working memory training. npj Science of Learning 8:48. https://doi.org/10.1038/s41539-023-00200-y

q3 · i3 · causal · r2

Simple main effects analysis of 6-back gamma power showed no group effect at Post1 (p = 0.191) but a significant active-group advantage at Post21-test (η2p = 0.462), reported in the Results section of the randomized trial.

"the active group had a significantly higher gamma power t han the sham group at the Post21-test [F(1, 31) = 24.923, p < 0.0001, η2 p = 0.462]"

Discussion¶

Related Claims¶

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