Fig. 6: Alpha power increased over two months for the tACS treatment group. | Schizophrenia

Fig. 6: Alpha power increased over two months for the tACS treatment group.

From: Alpha transcranial alternating current stimulation reduces depressive symptoms in people with schizophrenia and auditory hallucinations: a double-blind, randomized pilot clinical trial

Fig. 6

(a) shows the group average of alpha power change from the baseline (Day 1) to four main follow-up visits by the treatment condition (top row: 10Hz-tACS, bottom row: sham). Solid dots mark the clusters with a statistically significant increase in alpha power (p < 0.05); open circles mark the clusters with a marginally significant increase in alpha power (p < 0.1). Only the tACS group exhibited significantly increased alpha power from baseline. Area enclosed by the gray curve is the target region, a predefined region of interest (ROI) based on the simulated electric field (c) with field strength greater than 0.15 V/m. (b) shows the average alpha power change (mean ± standard error shown as solid lines and shaded areas) within the target region for the tACS treatment group and the sham treatment group. (*p < 0.05 significant increase from baseline for the tACS group, FDR-corrected).

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