Figure 2.

MoCA-K and CNSVS scores (mean ± SD) for 5 participants with mild cognitive impairment. MoCA-K scores were assessed at baseline and post-NF training (sessions 8 and 16). CNSVS scores were assessed at baseline and following NF training (session 16). MoCA-K scores were significantly different (Friedman test, χ²(2) = 8.32, P = .016). MoCA-K scores at sessions 8 and 16 were not significantly different compared with those at baseline (Wilcoxon signed-rank tests with a Bonferroni correction; ^∗P < .025, session 0 versus session 16; ^†P < .025, session 0 versus session 8). Wilcoxon signed-rank tests were used for CNSVS scores (∗P < .05, session 0 versus session 16). Error bars represent SD. CNSVS = Central Nervous System Vital Signs; MoCA-K = the Korean version of the Montreal Cognitive Assessment; NF = neurofeedback; SD = standard deviation.