Effects of Transcranial Micro-electric Current Physiological Training on Polysonograme Under Altitude Hypoxia

Objective To investigate the effects of transcranial micro-electric current physiological training (TMCPT) on polysomnograme (PSG) in order to provide technology and methods for maintaining and training cerebral function (CF) under altitude hypoxia. Methods Forty healthy volunteers served as subjects, who trained by TMCPT in the condition of altitude hypoxia (3700 m above sea level). Current intensity of TMCPT was limited within safety physiological band. Subjects were trained 1 times per day (before going to bed) and lasted 5 min. PSG were observed in resident phase (time lasted 3 month at least) Pittsburgh sleep quality index were investigated to evaluate the sleep quality. Results Compare to the results of pre-TMCPT, actual sleep time of PSG increased, sleep latency decreased, sleep efficiency improved significantly (F = 15.43-34.75, P < 0.05). S-2%, S3+4% and REM% of sleep construction in PSG increased but S-1% decreased (F = 12.59-14.57, P < 0.05). Subjects' sleep quality indexes had significant reduction as compared with those in pre-resident phase. Conclusions TMCPT can improve sleep quality under altitude hypoxia.