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. Author manuscript; available in PMC: 2023 Oct 18.
Published in final edited form as: Neurobiol Aging. 2023 Apr 20;129:72–88. doi: 10.1016/j.neurobiolaging.2023.04.005

Table 1.

Average biomarker load detected in plasma (pg/mL) pre-tACS and post-tACS

Biomarker Pre-tACS Post-tACS W p Value rrb
Aβ40 132.02 (29.02) 135.05 (34.38) 37.5 0.600 −0.18
Aβ42 7.65 (2.40) 7.93 (2.75) 38.0 0.635 −0.17
Aβ42/40 0.058 (0.02) 0.059 (0.02) 31.0 0.340 −0.32
pTau181 3.38 (0.97) 3.60 (1.24) 30.0 0.305 −0.34
NfL 22.62 (7.48) 22.45 (8.71) 52.0 0.675 0.14
GFAP 232.62 (59.31) 248.54 (56.62) 22 0.108 −0.52

Nonparametric Wilcoxon sign-ranked test statistics (W) for each pre-post tACS biomarker comparison are listed along with significance (p) values and rank-biserial correlations (rrb). All parentheses represent standard deviation of the mean.