[Instant adjustive effect of auricular electroacupuncture on brain default model network of patients with primary insomnia].

To investigate the immediate brain effect of auricular electroacupuncture (EA) in the treatment of primary insomnia (PI).In this study, 15 subjects with PI who were diagnosed according to Pitsburgh Sleep Quality Index (PSQI), and other 15 age- and gender-matched subjects without insomnia were recruited in the present study. The PI patients received EA (4 Hz/20 Hz, a tolerable electrical current strength) of auricular concha for 30 min, and their...