A clinical trial to investigate the different efficacy according to acupuncture treatment method on mild cognitive impairment

INTERVENTION: Medical Device : different acupuncture treatment once per day, 3 days per week (excluding Saturday and Sunday) for 8 weeks Basic methodgroup : acupuncture treatment at Baihui(GV20), Sishencong(EX‐HN1), Fengchi(GB20), and Shenting(GV24) for 30 minutes once per day, 3 days per week (excluding Saturdayand Sunday) for 8 weeks. acupoint specificity group : acupuncture treatment at Baihui(GV20), Sishencong(EX‐HN1), Fengchi(GB20), Shenting(GV24), Taixi(KI3) for 30 minutes once per day, 3 days per week (excluding Saturdayand Sunday) for 8 weeks. needle duration group : acupuncture treatment at Baihui(GV20), Sishencong(EX‐HN1), Fengchi(GB20), and Shenting(GV24) for 20 minutes once per day, 3 days per week (excluding Saturdayand Sunday) for 8 weeks. electroacupuncture group : electroacupuncture treatment at Baihui(GV20), Sishencong(EX‐HN1), Fengchi(GB20), Shenting(GV24), Taixi(KI3) for 30 minutes once per day, 3 days per week (excluding Saturdayand Sunday) for 8 weeks. CONDITION: Diseases of the nervous system PRIMARY OUTCOME: Alzheimer's Disease Asessment Scale‐Korean version‐cognitive subscale (ADAS‐K‐cog) SECONDARY OUTCOME: Center for Epidemiological Studies‐Depression Scale( CES‐D) European Quality of Life Five Dimension. Five Level Scale(EQ‐5D‐5L) Korean Activities of Daily Living( K‐ADL), Korean Instrumental Activities of Daily Living( K‐IADL) Korean version of the Montreal Cognitive Assessment(MoCA‐K) INCLUSION CRITERIA: Participants meeting all of the following criteria will be included in this trial. The inclusion criteria are as follows: 1) participants(males and females) aged 55 to 85 ; 2) participants who meet the Peterson diagnostic criteria for MCI, with memory impairments for at least 3 months; 3) Score in K‐MMSE was 20‐23; 4) Score in MoCA‐K was 0‐22;5) fluency in language sufficient to reliably complete all study assessment; 6) voluntarily signed the informed consent form.