Figure 3
Absolute power densities of the theta, alpha 1, and alpha 2 bands. Blue, red, and green lines indicate the power densities of each wave activity under sine-wave sound stimulation (SS), verbal sound stimulation (VS), and no sound stimulation (NS), respectively. There were significant differences in the power densities between baseline and the other segments (*P < .05, Dunnett’s test) and among the 3 types of stimulation (†P < .05, Bonferroni multiple comparison).