Objective:To investigate the efficacy and safety of transcranial alternating current stimulation (tACS) in treating migraine without aura.Methods:A prospective study was performed. From June 2021 to June 2022, 40 migraine without aura patients treated at Vertigo Center, Department of Neurology, Second Affiliated Hospital of Zhengzhou University were enrolled; they were randomly assigned to true group ( n=20) and pseudo group ( n=20); treatment was given for 4 consecutive weeks and follow-up was given for 4 weeks. Pseudo group did not receive current stimulation, while true group received stimulation by 77.5 Hz, 15 mA alternating current through electrodes placed on the forehead and bilateral mastoid (twice/d, 40 min each time, 5 d as a course, a total of 4 courses). Efficacies and adverse reactions were assessed before treatment, and at the end of treatment and follow-up, respectively. Results:Compared with pseudo group, the average monthly migraine days, visual analog scale (VAS) scores, Pittsburgh Sleep Quality Index (PSQI), Hamilton Anxiety Scale (HAMA) scores and Hamilton Depression Scale (HAMD) scores decreased statistically in true group ( P<0.05), and Migraine-specific Quality of Life Questionnaire (MSQ) scores increased statistically in true group ( P<0.05). In true group, compared with those before treatment, the average monthly migraine days, VAS scores, PSQI, HAMA scores and HAMD scores significantly decreased, and MSQ scores increased statistically at the end of treatment and follow-up ( P<0.05). During treatment, no adverse reactions such as seizures, hearing loss, scalp burns, dizziness, or tinnitus were noted in true group and pseudo group. Conclusion:Repeated tACS can obviously reduce frequency and degree of migraine, improve quality of life in migraine without aura patients; and good safety can be recorded.

Objective: This study aimed to analyze the microstructural features of sleep in patients with vestibular migraine and migraine, and to hypothesize the pathophysiological mechanism between vestibular migraine and sleep disorders.Methods: From March 2021 to June 2022, 35 vestibular migraine patients, 35 migraine patients, and 30 controls were collected from the Vertigo Center & Sleep Center of the Second Affiliated Hospital of Zhengzhou University. The anxiety and depression status, sleep quality, and cyclic alternating pattern (CAP) of the three groups were analyzed and compared using the Pittsburgh Sleep Quality Index, Hamilton Anxiety and Depression Scale, and polysomnography (PSG).Results: The vestibular migraine group had a higher CAP time (mean 173.64 vs. 122.11, P < 0.001), CAP index (mean 54.25 vs. 37.50, P < 0.001), CAP rate (mean 48.41 vs. 32.31, P < 0.001), CAP sequences (mean 42.60 vs. 29.83, P < 0.001), A3% (mean 45.58 vs. 17.50, P < 0.001) and A2% thorn A3% (mean 68.87 vs. 38.83, P < 0.001) compared to the control group, with a lower A1 index (mean 16.68 vs. 23.87, P < 0.001) and A1% (mean 31.13% vs. 61.17, P < 0.001).Conclusion: Patients with vestibular migraine have poor sleep quality, thalamic-cortical hyperfunction and active arousal system. In addition, high CAP rate and high A2 to A3 ratio make the sleep structure more fragmented.(c) 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

目的 分析血管迷走神经性晕厥(VVS)患者的多导睡眠图特点.方法 收集2020-09—2022-06于郑州大学第二附属医院神经内科就诊的VVS患者40例和健康体检者45例(对照组),应用多导睡眠监测对2组睡眠结构进行分析.结果 与对照组相比,VVS患者睡眠质量降低,快速眼球运动睡眠期[分别为(17.97±0.96)％、(23.88±4.45)％,t=8.226,P<0.01]和慢波睡眠(N3期)[分别为(13.3±10.17)％、(21.76±6.42)％,t=4.638,P<0.05]比例降低,N1期[分别为(10.85±16.45)％、(4.95±5.34)％,t=2.379,P<0.05]和N2期[分别为(59.88±10.5)％、(49.41±6.5)％,t=5.593,P<0.01]睡眠比例增加,微觉醒指数[分别为9.3(7.05,12.5)、4.3(3.2,5.5),Z=—5.567,P<0.01]以及觉醒次数[分别为56(40,85.5)、25(19,34),Z=—5.4,P<0.01]升高.结论 VVS患者的睡眠质量差,夜间睡眠结构紊乱,表现为浅睡眠增多,深睡眠减少,觉醒次数增加,可能与VVS患者交感神经活性的增强、5-羟色胺递质的紊乱以及反复脑缺血等相关.