Table 2. Oxy-Hb measurement in DLPFC during verbal working memory task.

	Group	N	Week 0	q	Week 6	q	Δ	ANOVA q
CH11	Placebo	24	0.50 ± 0.65	0.456	0.40 ± 0.66	0.991	-0.11 ± 1.09	0.493
	β-lactolin	24	0.19 ± 0.90		0.40 ± 0.75		0.21 ± 1.13
CH13	Placebo	25	0.61 ± 0.89	0.701	0.82 ± 0.79	0.889	0.21 ± 1.18	0.493
	β-lactolin	23	0.49 ± 0.71		0.94 ± 1.17*		0.46 ± 0.92
CH14	Placebo	23	-0.14 ± 0.94	0.456	0.04 ± 0.70	0.889	0.18 ± 1.23	0.493
	β-lactolin	24	0.13 ± 0.78		-0.02 ± 0.57		-0.15 ± 0.81
CH20	Placebo	24	0.31 ± 1.37	0.701	0.34 ± 1.22	0.889	0.03 ± 2.07	0.72
	β-lactolin	24	0.15 ± 1.44		0.21 ± 1.16		0.06 ± 1.50
CH22	Placebo	25	0.47 ± 0.75	0.456	0.63 ± 0.86	0.889	0.16 ± 1.03	0.493
	β-lactolin	24	0.09 ± 0.86		0.49 ± 0.73		0.40 ± 1.34
CH23	Placebo	25	0.14 ± 0.65	0.456	0.10 ± 0.61	0.889	-0.05 ± 1.03	0.493
	β-lactolin	24	-0.05 ± 0.67		0.25 ± 0.73		0.30 ± 1.09

The Z-score of Oxy-Hb measurement at weeks 0 and 6, and changes between weeks 0 and 6 in six channels (CH11, CH13, CH14, CH20, CH22, and CH23) during the verbal working memory task. Data are presented as means ± SD. The number of participants in each channel was represented. Group differences were identified using ANOVA and FDR correlation. Statistically significant differences between baseline and week 6 were identified using paired t-tests.

ANOVA, analysis of variance; CH, channel; Hb, hemoglobin; FDR, false discovery rate; DLPFC, dorsolateral prefrontal cortex