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"吴逊" 26 results
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ObjectiveNumerous foreign researches focused on the changes of EEG during the developmental periods from the newborn to late adulthood. However, the EEG changes of healthy Chinese people is still rare. Therefore, we examined the EEG of 2 357 healthy Chinese people.MethodsIn 1982, guided by Prof. Feng, we analysed the waking EEG of 2 357 healthy people, from 2 to above 60 years old, including open eyes induction test and hyperventilation.ResultsAt age 2 ~ 4, the posterior basic rhythms has reached 8 ~ 9 Hz, but the rhythms were unregular pattern. After age 7, the rhythms were 9 Hz, α index was more than 60%, the amplitude was higher than other ages. At age 12 ~ 14, the main rhythms was 10 Hz, the same as adulthood, α index was 70% ~ 80%. After this age, the amplitude of α rhythm deceased gradually. Above 60 years old, the main rhythm was 9 Hz, α index <60%, the amplitude was lower than adulthood. At age 14 ~ 16, the θ index in frontal and temporal regions was 6%, the same as the adulthood. At age 18 ~ 20, β index was 20%.ConclusionsIn the article, we analyzed the waking EEG of 2 357 healthy Chinese people in Beijing area. Although this multi-center study was accomplished at 1980s, the data is still of great value to the clinical EEG today.
Release date:2019-07-15 02:48
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颞叶癫痫(Temporal lobe epilepsy,TLE)是最常见的限局性癫痫,药物治疗效果差,因此是癫痫外科治疗的主要类型。但标准前颞切除后 1~2 年无发作率仅为 65%,其原因之一是双侧颞叶癫痫(Bilateral temporal lobe epilepsy,BTLE)。BTLE 的定义尚无统一标准,在临床及头皮脑电图可发现有 BTLE 的可能,颅内电极尤其是立体定向脑电图在确定 BTLE 方面起决定性作用。BTLE 的确切发生率尚不了解,在 TLE 大约 30%~40% 为 BTLE。双侧颞叶间有功能性相互密切联系,一侧颞叶病变或功能异常很容易影响对侧颞叶,逐渐形成 BTLE。BTLE 几乎均为药物难治的,在精准定位定侧的情况下,如能证实发作的 50%~80% 以上起于一侧,神经心理检查对侧颞叶功能适当,无颞外症状,行一侧颞叶切除 30% 预后好。对 BTLE 尚有很多需深入研究的问题,尤其是外科治疗的适应证及预后。今后应深入开展多中心大样本前瞻性研究。
Release date:2020-05-19 01:07
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Release date:2024-01-02 04:10
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Barkovich等于1997年首先报道磁共振成像的穿透征,在T2相FLAIR相为轻度高信号,T1相为低信号的带状异常从异常脑沟伸延至侧脑室壁。最常见于局限性皮质发育障碍 Ⅱb 型。本文复习相关文献介绍其磁共振成像特点、定义、临床意义及组织病理学,结合发生机制强调穿透征的必要条件为从皮质沟底伸向侧脑室壁的异常信号,不能与同样常见于局限性皮质发育障碍 Ⅱ 型的沟底现象混为一谈。
Release date:2022-04-28 09:14
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2005年的癫痫概念性定义:一种具有持久性产生癫痫样发作倾向的大脑疾患。实际上,这个定义通常用于间隔24 h以上的两次非诱发性痫性发作。国际抗癫痫联盟(ILAE)接受了一个特别工作组的建议,在没有满足两次非诱发性发作标准的特殊情况下,改变了实用性定义。特别工作组建议,在符合下列任何一项条件时,癫痫可以考虑为一种脑部疾病:①至少两次间隔>24 h的非诱发性(或反射性)痫性发作;②一次非诱发性(或反射性)痫性发作,在未来10年内,再次发作的可能性与两次非诱发性发作后的再发可能性相当(至少60%);③癫痫综合征的诊断,具有年龄相关的癫痫综合征的个人,目前已经超过该患病年龄,或保持无发作至少10年,并停用抗癫痫药物至少5年,这类癫痫被认为是可以解除的。"解除"与传统上"缓解"或"治愈"的观点不同。不同的实用性定义的形成服务于各种不同的目的。这次修订癫痫定义所使用的术语与常用的术语一致。
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眶额区位于双侧额叶下方前颅凹中, 嗅束将直回与其他脑回分开。眶额区本身在各脑回间, 以及与额叶凸面及内侧面, 颞叶有广泛的联系。眶额区起源的癫痫少见。发作开始均先出现动作停止、无反应及茫然, 而后根据扩布的不同出现:嗅觉异常、过度运动、头眼偏向同侧或对侧、重复动作等运动症状、自主神经症状, 还可以有难以确定的感觉异常、发笑、似曾相识、视幻觉、自动症。根据临床症状可以分为额叶型、颞叶型及额颞叶型。头皮脑电图很难提供有定位价值的异常, 常为额颞叶甚至双侧额颞叶异常。深部电极尤其是立体脑电图有定侧定位价值。眶额区癫痫几乎均为药物难治性癫痫, 应以外科治疗为主。
Release date:2017-01-22 09:09
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2002年Burger等首先报道癫痫患者的大脑标本中有少突胶质细胞增生。2013年Coras等认为是一个新的临床病理学实体称之增殖性少突胶质细胞伴癫痫(Proliferative oligodendroglial hyperlasia in epilepsy,POGHE)。2017年Schurr等详细研究其病理学后确认为轻度皮质发育畸形伴少突胶质细胞增生及癫痫(Mild malformation of cortical development with oligodendroglial hyperplasia and epilepsy,MOGHE)。迄今国外文献报道92例,国内尚无报道及介绍,本文对92例进行分析并复习文献。均为儿童药物难治性部分发作,发作年龄≤15岁者96.4%,≤10岁者83.1%。临床表现多种多样。电临床多定位于额叶(81.5%),少数在颞顶或颞枕区。磁共振成像异常类似于局灶性皮质发育不良(Focal cortical dysplasia,FCD),尤其是FCDⅡa。均为药物难治性癫痫,并做外科切除性治疗。组织病理学均有不同于FCD的特点,即灰白质交界处有簇状或层状少突胶质细胞增生及异位神经元。但皮质分层无异常。
Release date:2022-04-28 09:14
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癫痫是一种最常见的神经系统疾病,特点为多数发作无诱因且难以预测。发作可导致合并症,包括外伤及癫痫猝死(Sudden unexpected death in epilepsy,SUDEP),并致生活质量下降。过去20年广泛研究了发作的预警和报警,开发很多方法及设备,如头皮脑电图、颅内脑电图、肌电图、皮肤电变化、心率和心率变异性(Heart rate variability,HRV)。其中HRV是最有前景的方法。发作发放通过网络导致交感神经和副交感神经间不平衡并且改变了自主神经发放合并心率异常。过去20年用计算机方法开发了HRV的谱分析。HRV的变化早于脑电图发作和临床发作的开始。HRV可能是癫痫发作的预警和报警的指标。现在虽有很多关于癫痫的HRV算法,但是缺少标准的对于癫痫患者的方案,并且没有固定的监测模式,使之难以转化为临床实用,解决这个问题是十分重要的。总结出一个HRV评估的最低方案可用于所有癫痫患者的研究十分必要,可使HRV成为预警癫痫发作的有用工具。
Release date:2022-09-06 03:50
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Currently, about one-third of patients with anti-epilepsy drug or resective surgery continue to have sezure, the mechanism remin unknown. Up to date, the main target for presurgical evaluation is to determene the EZ and SOZ. Since the early nineties of the last century network theory was introduct into neurology, provide new insights into understanding the onset, propagation and termination. Focal seizure can impact the function of whole brain, but the abnormal pattern is differet to generalized seizure. Brain network is a conception of mathematics. According to the epilepsy, network node and hub are related to the treatment. Graphy theory and connectivity are main algorithms. Understanding the mechanism of epilepsy deeply, since study the theory of epilepsy network, can improve the planning of surgery, resection epileptogenesis zone, seizure onset zone and abnormal node of hub simultaneously, increase the effect of resectiv surgery and predict the surgery outcome. Eventually, develop new drugs for correct the abnormal network and increase the effect. Nowadays, there are many algorithms for the brain network. Cooperative study by the clinicans and biophysicists instituted standard and extensively applied algorithms is the precondition of widely used clinically.
Release date:2024-01-02 04:10
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