Sensations during stimulation did not differ across groups except for metallic/iron taste, which was lower in the Sham group than the Parietal Theta group¶

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

Subclaims¶

q3 i? Itching, pain, burning, warmth/heat, fatigue/decreased alertness, and general feeling did not differ across the four groups, but metallic/iron taste did, with Sham significantly lower than Parietal Theta (p = 0.006). → Limor Shtoots 2024

Evidence¶

Limor Shtoots 2024¶

Limor Shtoots, Asher Nadler, Roni Partouche, Dorin Sharir, Aryeh Rothstein, Liran Shati & Daniel A. Levy. (2024). Frontal midline theta transcranial alternating current stimulation enhances early consolidation of episodic memory. npj Science of Learning 9:8. https://doi.org/10.1038/s41539-024-00222-0

q3 · i? · causal · r2

Adverse-effects questionnaire completed after 20 min of tACS/Sham in the four-group experiment. Univariate GLM analyses found no group differences on most sensations (e.g., itching F(3,68) = 1.507, p = 0.221), but "Sham group participants reported significantly lower levels of metallic/iron taste in comparison to the Parietal Theta tACS group, p = 0.006." No effect size is printed.

"Sham group participants reported significantly lower levels of metallic/iron taste in comparison to the Parietal Theta tACS group, p = 0.006; which aligns with the fact that metallic/iron taste is a known side effect of transcranial electrical stimulation 33"

Discussion¶

Related Claims¶

• Frontal theta tACS yields strong memory advantages over all other stimulation conditions at 2-hour, 24-hour, and 1-week delayed free recall tests — related
• Participants were successfully blind to stimulation condition assignment across all four groups — related