基于变分模态分解的休息态虚拟现实晕动症脑电自动检测

虚拟现实晕动症的存在是制约VR技术行业进一步发展的关键因素,研究虚拟现实晕动症相关的神经活动及对其准确检测是解决此问题的前提,此前研究缺少对休息态虚拟现实晕动症神经活动的研究。因此,本研究利用虚拟现实晕动症暴露任务前后休息态脑电信号,提出虚拟现实晕动症脑电特征作为指标实现对虚拟现实晕动症的检测。首先,通过统计分析对所选的5个电极即Fp1、Fp2、F8、T7及T8的脑电信号分别进行变分模态分解,并从选中的模态分量中提取样本熵、排列熵及中心频率。然后,通过统计检验和ReliefF算法进行两个阶段的特征选择。最后,将选择的特征向量送入支持向量机中进行分类,进而实现对虚拟现实晕动症的自动检测。结果表明,此方法准确率、灵敏度及特异度分别达到了98.3%、98.5%及98.1%,ROC曲线下的面积值达到了1,优于其他方法,证明了此方法在虚拟现实晕动症脑电信号自动检测方面优势与有效性。

养脑宁晕方治疗气血亏虚型眩晕112例

眩晕是中西医临床常见的一种病症，以眼前发黑、视物不清或旋转，站立不稳为主要表现。眩晕作为一个症状见于西医学中的某些疾病。中医学认为导致眩晕之病同病机颇为复杂，证候类型也多繁复。本组１１２例皆为中医气血亏虚型的眩晕，分别见于西医学中的高血压病、椎动脉供...

通栓胶囊治疗脑动脉硬化140例

我院 1999～ 2002年应用自制通栓胶囊治疗脑动脉硬化 140例,疗效显著.现报告如下. 1 资料与方法 1.1 一般资料脑动脉硬化者 222例均为我院住院病例,其中男性 160例,女性 62例;年龄 45～ 80岁.随机分为治疗组 140例与对照组 82例.两组一般资料差异无显著性 (P >0.05).

清脑止晕颗粒治疗后循环缺血性眩晕48例

目的:观察清脑止晕颗粒治疗后循环缺血性眩晕(痰瘀互结型)的疗效。方法:将95例辨证为痰瘀互结型后循环缺血性眩晕患者随机分为治疗组48例和对照组47例,对照组采用静脉滴注丹红注射液合口服甲磺酸倍他司汀片治疗,治疗组在对照组治疗的基础上口服清脑止晕颗粒治疗。观察两组椎-基底动脉平均流速及临床疗效。结果:总有效率治疗组为93.75%,对照组为78.72%,组间比较,差异有统计学意义(P<0.05)。两组椎-基底动脉平均流速治疗后组间比较,差异均有统计学意义(P<0.05);治疗组椎-基底动脉平均流速治疗前后比较,差异均有统计学意义(P<0.05)。结论:清脑止晕颗粒治疗疾瘀互结型后循环缺血性眩晕疗效显著。

套公式

早上 都说早上心情最美妙,什么烦恼都没了.我同意这话,一天最美妙的时刻莫过于早上头脑晕晕时间多多地睡大觉的时刻.我们学生的一句心里话几乎成了名言:当你早上突然醒来,发现还有两个钟头可睡时,那是最幸福的事情.

Efficacy analysis on vertigo of cerebellar infarction at the recovery stage treated with electroacupuncture at the balance area and vertigo-auditory area of scalp acupuncture

Objective To explore the efficacy of electric stimulation at the balance area and vertigo-auditory area of scalp acupuncture for vertigo caused by cerebellar infarction. Methods One hundred cases of vertigo caused by cerebellar infarction at the recovery stage were randomized into a scalp acupuncture group and a conventional acupuncture group. In the scalp acupuncture group, on the basis of the routine drug therapy, the electric stimulation was applied to the balance area and vertigo-auditory area of scalp acupuncture. In the conventional acupuncture group, on the basis of the routine drug therapy, the conventional acupuncture was supplemented. The treatment was given once a day, 6 treatments made one session. The clinical efficacy was assessed after 4 sessions of treatment. The transcranial Doppler ultrasonography （TCD） was adopted in the scalp acupuncture group to observe the changes of the mean blood flow velocity （Vm） of the anterior cerebral artery （ACA）, middle cerebral artery （MCA） and posterior cerebral artery （PCA） before and after treatment. Results After treatment, the total effective rate was 90.0% （45/50） in the scalp acupuncture group and was 68.0% （34/50） in the conventional acupuncture group, presenting the statistically significant difference in comparison （P0.05）. After treatment, Vm of ACA and MCA was increased apparently as compared with that before treatment in the scalp acupuncture group. Conclusion The electric stimulation at the balance area and vertigo-auditory area of scalp acupuncture achieves the apparent efficacy on vertigo caused by cerebellar infarction at the recovery stage and improves obviously brain blood circulation. It is significant to promote this therapy in clinical practice.

Observation on Clinical Efficacy of Acupuncture Therapy for Posterior Circulation Ischemia Vertigo

Objective： To observe the clinical efficacy of acupuncture for posterior circulation ischemia vertigo （PCIV）. Methods： A total of 71 PCIV cases were randomly allocated into an acupuncture group （37 cases） and a medication （oral Flunarizine Hydrochloride） group （34 cases）. After 6 weeks of treatment, the therapeutic efficacies in the two groups were analyzed. Results： After treatment, the mean blood flow velocities （VM） of both the vertebral artery （VA） and the basilar artery （BA） in acupuncture group were significantly increased, showing statistical differences when compared with the pre-treatment result of the same group （P〈0.05）; despite some decrease in pulsatility index （PI） after treatment, there was no statistical difference when compared with the pre-treatment result. After treatment, the mean blood flow velocities of both VA and BA in the medication group were increased, showing statistical differences when compared with the pre-treatment result of the same group （P〈0.05）; there was no statistical difference in PI before and after the treatment （P〉0.05）. Regarding the improvement of VM, the acupuncture group was superior to the medication group, showing a statistical difference （P〈0.05）; there was no statistical difference in PI improvement between the two groups. Considering from the clinical efficacy, both acupuncture and medication are effective. However, acupuncture obtained a significantly better effect than medication （P〈0.05）. Conclusion： Acupuncture therapy can posterior circulation ischemia vertigo. obtain a better effect than oral Flunarizine Hydrochloride for