Frontal lateralization of classification-model activity differs by tDCS group: reversed (left-dominant) alpha-band lateralization after L+R− and reduced left prefrontal beta-band engagement after L−R+¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r2 · q3
Currency · newest study 2024 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? In the alpha band, the group×hemisphere interaction on frontal activity degree is significant, with L+R− showing a reversed (left > right) pattern relative to Sham. → Xie 2024 q3 i? In the beta band, a group×hemisphere interaction is confirmed, with left frontal activity lower in L−R+ than Sham. → Xie 2024 (2)

Evidence¶

Xie 2024¶

Xie, C., Zhang, S., Qiao, X., & Hao, N. (2024). Transcranial direct current stimulation targeting the bilateral IFG alters cognitive processes during creative ideation. npj Science of Learning, 9, 75. https://doi.org/10.1038/s41539-024-00285-z

q3 · i? · causal · r2

Mixed ANOVA on weighted frontal degrees across the 80 alpha-band models per group; the quote reports the significant group×hemisphere interaction with ηp 2 = 0.274. Post hoc, Sham showed right > left frontal activity while "L+R− exhibited a reversed pattern" (t237 = 9.17, pbonferroni < 0.001), and L−R+ showed no hemispheric difference.

"as Fig.4a depicts, for the alpha band, there was a signi ficant interaction between group and hemi- sphere ( F2,237 = 44.78, p < 0.001, ηp 2 = 0.274)"

Xie 2024 (2)¶

Xie, C., Zhang, S., Qiao, X., & Hao, N. (2024). Transcranial direct current stimulation targeting the bilateral IFG alters cognitive processes during creative ideation. npj Science of Learning, 9, 75. https://doi.org/10.1038/s41539-024-00285-z

q3 · i? · causal · r2

Mixed ANOVA on weighted frontal degrees across beta-band models; the quote reports the significant group×hemisphere interaction with ηp 2 = 0.109. Post hoc, Sham showed left > right activity, the stimulation groups showed no hemisphere effect, and "the degree of left frontal activity in the L−R+ group was significantly lower than that in the Sham group" (t237 = 5.84, pbonferroni < 0.001).

"For the beta band (Fig. 4b), an interaction between group and hemi- sphere was also confirmed (F2,237 = 14.40, p < 0.001, ηp 2 = 0.109)"

Discussion¶

Related Claims¶

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