Microcurrent Stimulation at Shenmen Acupoint Facilitates EEG Associated with Sleepiness and Positive Mood: A Randomized Controlled Electrophysiological Study

Figure 2

Reduced absolute alpha power in (a) the experimental group after stimulation as compared to the baseline but not (b) the placebo group. After stimulation at Shenmen acupoint, significant reduction occurred bilaterally in the superior frontal gyrus (BA 11, left: , , ; BA 10, right: , , ), medial frontal gyrus (BA 10, left: , , ; right: , , ), and inferior frontal gyrus (BA 47, left: , , ; right: , , ), as well as in the right superior temporal gyrus (BA 38, , , ), right middle temporal gyrus (BA 21, , , ), anterior cingulate (BA 32, , , ), and cingulate gyrus (BA 24, , , ). The most pronounced decrease was found in the left superior frontal gyrus (BA 11, , , ). Blue color indicates the locations of significantly reduced absolute alpha power in the experimental group.

(a)

(b)