Motor cortex

电机皮层
  • 文章类型: Case Reports
    背景:脊髓损伤(SCI)会导致神经元损伤并导致运动和感觉功能障碍。间歇性theta爆发刺激(iTBS)已用于通过在大脑中施加磁场来诱导神经元和突触可塑性。皮层中诱导的可塑性在运动和感觉功能的恢复中起着至关重要的作用。然而,iTBS在完全SCI患者中的效果仍然难以捉摸。
    方法:我们在此报告一例27岁的女性,她患有L1完全性脊髓损伤(SCI),ASIA评分为A。患者在损伤水平以下丧失了所有的感觉和运动功能。间歇性theta爆发刺激(iTBS)在M1运动皮层的静息运动阈值的80%进行,同时进行强化康复训练以促进感觉运动功能。
    结论:功能部分恢复,电生理学,和神经参数。该病例报告还证明了iTBS在完全SCI患者中的安全性和有效性。在干预期间未观察到患者的不良事件。
    BACKGROUND: Spinal cord injury (SCI) causes damage to neurons and results in motor and sensory dysfunction. Intermittent theta burst stimulation (iTBS) has been used to induce neuronal and synaptic plasticity by applying a magnetic field in the brain. The plasticity induced in the cortex has an imperative role in the recovery of motor and sensory functioning. However, the effect of iTBS in complete SCI patients is still elusive.
    METHODS: We report here the case of a 27-year-old female who sustained an L1 complete spinal cord injury (SCI) with an ASIA score of A. The patient lost all the sensory and motor functions below the level of injury. Intermittent theta burst stimulation (iTBS) was administered at 80% of the resting motor threshold over the M1 motor cortex, along with intensive rehabilitation training to promote sensorimotor function.
    CONCLUSIONS: There was a partial recovery in functional, electrophysiological, and neurological parameters. The case report also demonstrates the safety and efficacy of iTBS in complete SCI patients. No adverse event has been observed in the patient during intervention sessions.
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  • 文章类型: Journal Article
    重复经颅磁刺激(rTMS)可以增强失语症的恢复。大多数研究使用针对右额下回的抑制性刺激。然而,运动皮层,观察到有助于预测失语症恢复,参与单词制作,可能是rTMS的适当目标。我们旨在观察中风后失语症患者抑制性rTMS针对嘴唇的右运动皮层引起的图片命名任务的行为变化。
    使用单例实验设计,我们纳入了3名有语音缺陷的慢性卒中后失语症患者.每个参与者每周执行3次口头图片命名任务,持续2、3或4周(参与者之间的伪随机),以建立每个参与者的基线命名能力。这些不是治疗,没有提供反馈。然后,每个参与者都接受了干预,针对嘴唇右侧运动皮层的抑制性连续theta爆发刺激,每周3次,共2周。每周持续3次命名测试,这两个星期。在研究期间的任何时间都不进行治疗。
    图形的视觉分析显示了P2和P3的rTMS对图片命名精度的积极影响以及P1的改善趋势。统计分析表明,P1(τ=0.544,p=.013,SETau=0.288)和P2(τ=0.708,p=.001,SETau=0.235)的rTMS后有所改善。对于P3,即使干预允许一些改善,由于基线命名测试期间的学习效果,这在统计学上是不显着的,持续时间最长,4周关于特定的语言特点,所有患者的语音错误均显着减少。
    嘴唇的运动皮层可能是rTMS的适当目标,以改善患有语音缺陷的中风后失语症患者的命名。这表明有可能个性化rTMS的目标,根据患者的语言障碍。
    UNASSIGNED: Repetitive transcranial magnetic stimulation (rTMS) can enhance aphasia recovery. Most studies have used inhibitory stimulation targeting the right inferior frontal gyrus. However, the motor cortex, observed to contribute to the prediction of aphasia recovery, is involved in word production and could be an appropriate target for rTMS. We aimed to observe behavioral changes in a picture naming task induced by inhibitory rTMS targeting the right motor cortex of the lips in people with poststroke aphasia.
    UNASSIGNED: Using a single-case experimental design, we included three participants with chronic poststroke aphasia who had phonological deficits. Each participant performed a verbal picture naming task 3 times a week for 2, 3, or 4 weeks (pseudorandom across participants) to establish a baseline naming ability for each participant. These were not therapy sessions, and no feedback was provided. Then, each participant received the intervention, inhibitory continuous theta burst stimulation targeting the right motor cortex of the lips, 3 times a week for 2 weeks. Naming testing continued 3 times a week, for these latter 2 weeks. No therapy was performed at any time during the study.
    UNASSIGNED: Visual analysis of the graphs showed a positive effect of rTMS for P2 and P3 on picture naming accuracy and a tendency toward improvement for P1. Statistical analysis showed an improvement after rTMS for P1 (τ = 0.544, p = .013, SETau = 0.288) and P2 (τ = 0.708, p = .001, SETau = 0.235). For P3, even if the intervention allowed some improvement, this was statistically nonsignificant due to a learning effect during the baseline naming testing, which lasted the longest, 4 weeks. Regarding specific language features, phonological errors significantly decreased in all patients.
    UNASSIGNED: The motor cortex of the lips could be an appropriate target for rTMS to improve naming in people with poststroke aphasia suffering from a phonological deficit. This suggests the possibility to individualize the target for rTMS, according to the patient\'s linguistic impairment.
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  • 文章类型: Journal Article
    目的:不安腿综合征(RLS)是维持性血液透析(MHD)患者普遍存在的神经系统并发症。然而,MHD-RLS患者的脑血流量(CBF)改变仍然未知.通过利用动脉自旋标记(ASL)技术,我们评估了不同脑区CBF的波动,并结合临床分析了MHD患者发生RLS的危险因素.
    方法:31例MHD合并RLS患者(MHD-RLS组)和31例非RLS患者根据年龄匹配,性别,以及认知功能(MHD-nRLS组)。通过图像预处理和数据分析,获得了不同大脑区域CBF值的变化,两组间差异较大的脑区CBF值与RLS评分相关。此外,比较了基线数据的差异,通过利用多因素逻辑回归,研究了发生RLS的独立危险因素.
    结果:与MHD-nRLS组相比,MHD-RLS组右颞上回CBF升高,右侧海马的CBF减少,左额中回,直角三角形额下回,左眶中额回,左中前回,离开了普雷苏斯.仅左中央前回CBF与透析时间校正后的RLS评分呈负相关(r=-0.436,P=0.016)。因此,通过逐步方法的多因素回归分析得出,左中前回CBF值(OR:0.968,95CI:0.944-0.993,P=0.012)仍然是MHD患者RLS的独立危险因素。此外,结果表明,血液透析时间(OR:1.055,95CI:1.014-1.098,P=0.008)和血清铁水平(OR:0.685,95CI:0.551-0.852,P=0.001)也是发生RLS的危险因素。
    结论:患有MHD-RLS的患者在多个脑区表现出CBF的改变。值得注意的是,左中央前回可能是影响MHD患者RLS发病的关键区域.此外,血液透析持续时间延长和血清铁水平相对不足是MHD患者发生RLS的危险因素.
    OBJECTIVE: Restless legs syndrome (RLS) stands as a prevalent neurological complication within maintenance hemodialysis (MHD) patients. However, the alterations in cerebral blood flow (CBF) among MHD-RLS patients remain uncharted. Through the utilization of the arterial spin labeling (ASL) technique, we evaluated the fluctuations in CBF within distinct brain regions and analyzed the risk factors for the development of RLS in MHD patients in the context of the clinic.
    METHODS: Thirty-one MHD patients with concomitant RLS (MHD-RLS group) and thirty-one non-RLS patients matched based on age, gender, as well as cognitive function (MHD-nRLS group) were included. Through image preprocessing and data analysis, the changes in CBF values in distinct brain regions were obtained, and the CBF values of brain regions with substantial differences between the two groups were correlated with the RLS scores. Furthermore, the differences in baseline data were compared, and through the utilization of multifactorial logistic regression, the independent risk factors for the development of RLS were examined.
    RESULTS: Compared with the MHD-nRLS group, the MHD-RLS group had increased CBF in the right superior temporal gyrus, reduced CBF in the right hippocampus, left middle frontal gyrus, inferior frontal gyrus of right triangle, middle frontal gyrus of left orbit, left precentral gyrus, and left precuneus. Only left precentral gyrus CBF were negatively correlated with RLS scores after correction for dialysis duration(r = -0.436, P = 0.016). Accordingly, multifactorial regression analysis by stepwise method yielded that the left precentral gyrus CBF values(OR: 0.968, 95%CI: 0.944-0.993, P = 0.012) remained an independent risk factor for RLS in MHD patients. In addition, the results showed that hemodialysis duration (OR: 1.055, 95%CI: 1.014-1.098, P = 0.008) and serum iron levels (OR: 0.685, 95%CI: 0.551-0.852, P = 0.001) were also risk factors for the development of RLS.
    CONCLUSIONS: Patients afflicted with MHD-RLS exhibit alterations in CBF across several brain regions. Notably, the left precentral gyrus might serve as a pivotal region influencing the onset of RLS among MHD patients. Furthermore, extended hemodialysis duration and a relative insufficiency in serum iron levels independently contribute as risk factors for RLS development within the MHD patient population.
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  • 文章类型: Case Reports
    Secondary trigeminal neuralgia after brainstem infarction is rare and rarely reported. A patient with secondary trigeminal neuralgia after brainstem infarction was admitted to the Department of Neurosurgery, Xiangya Hospital, Central South University. The patient was a 44 years old male who underwent motor cortex stimulation treatment after admission. The effect was satisfactory in the first week after surgery, but the effect was not satisfactory after one week. This disease is relatively rare and the choice of clinical treatment still requires long-term observation.
    脑干梗死后继发性三叉神经痛较为罕见,报道甚少。中南大学湘雅医院神经外科收治1例脑干梗死后继发性三叉神经痛的患者。患者为44岁男性,入院后行运动皮层电刺激治疗,术后前1周治疗效果尚可,但1周后治疗效果不佳。该疾病较为罕见,其临床治疗方式的选择还需长期观察。.
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  • 文章类型: Case Reports
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  • 文章类型: Case Reports
    惊吓反应是一种生理肌肉反应,是为了防止意外发生而发生的,突然的刺激。在这种情况下,我们想讨论rTMS协议后的反应,我们将其应用于出现严重损害功能的惊吓反应,不符合创伤后应激障碍(PTSD)标准或交通事故后发生重大脑损伤的患者。一名30岁的单身女性患者,在一家航空公司担任空姐,没有已知的身体或心理疾病史,但在一周前的一次车载交通事故后失去知觉约三个小时,她被送往我们的诊所。该患者有由于身体开始的飞溅运动而难以进行日常工作的病史。在影像学研究中未检测到重大脑部病变。她不符合PTSD的标准,脑电图结果正常。药物治疗对症状没有帮助,所以,rTMS计划。经过6次rTMS会议,她的动作完全停止了。我们的病人,不完全符合创伤后应激障碍的标准,其影像学和脑电图结果未显示任何病理结果,在发生车载交通事故后出现了严重的惊吓反应,对rTMS治疗反应充分,并快速有效地改善了她的功能。因此,我们认为rTMS应作为此类患者的有效治疗方法进行研究。
    Startle reaction is a physiological muscle reaction that occurs to protect against an unexpected, sudden stimulus. In this case, we wanted to discuss the response after the rTMS protocol, which we applied to our patient who had startle reactions that severely impair functionality and who did not meet the post traumatic stress disorders (PTSD) criteria or have a major brain lesion after a traffic accident. A 30-year-old single female patient who works as a stewardess in an airline company with no known history of physical or psychological illness but lost consciousness for about three hours after an in-vehicle traffic accident a week ago was admitted to our clinic. The patient had a history of having difficulty in doing her daily work due to the splashing movements that started in her body. No major brain lesion was detected in imaging studies. She did not meet the criteria for PTSD and her EEG results were normal. Medication did not help with the symptoms, so, rTMS was planned. After 6 sessions of rTMS, her movements had stopped completely. Our patient, who did not fully meet the criteria for PTSD and whose imaging and EEG results did not reveal any pathological findings had developed severe onset startle reactions after an in-vehicle traffic accident, fully responded to rTMS treatment and improved her functionality quickly and effectively. Thus, we think that rTMS should be investigated as an effective treatment method in such patients.
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  • 文章类型: Systematic Review
    背景:三叉神经性疼痛(TNP)是一种严重的综合征,禁用,由三叉神经或神经节引起的持续面部疼痛。动静脉畸形(AVM)是TNP的罕见原因。TNP干预的有限选择包括周围神经刺激,三叉神经核切开术和运动皮质刺激。
    方法:我们介绍了一名56岁的男子,他因巨大的后颅窝AVM而遭受神经压迫继发的三叉神经性疼痛。疼痛难以药物治疗。从所有可用的治疗选择中,由于巨大的AVM的存在,我们拒绝了三叉神经的微血管减压术,或立体定向放射外科因为AVM的弥漫性病灶.经过多学科的讨论,我们提出了一种微创,安全和可逆治疗:运动皮质刺激(MCS)。我们在右中央前回上放置了16极硬膜外电极。患者在一些补充药物的情况下疼痛控制令人满意。没有并发症或副作用,如癫痫发作,出现感觉障碍或感染。
    结论:TNP干预的有限选择包括周围神经刺激,三叉神经核切开术和MCS。Henssen等人进行了系统评价,他们研究了MCS的有效性,发现这在不同的慢性神经性口面部疼痛疾病中存在显着差异。视觉模拟评分(VAS)测得的中位疼痛缓解率为66.5%。
    结论:MCS应该是在高度选择的情况下考虑的另一个工具,当其他治疗方法不可行时。
    Trigeminal neuropathic pain (TNP) is a syndrome of severe, disabling, constant facial pain arising from the trigeminal nerve or ganglion. Arteriovenous malformations (AVM) are a rare cause of TNP. The limited choices of intervention of TNP include peripheral nerve stimulation, trigeminal nucleotomy and motor cortex stimulation.
    We present a 56-year-old man who suffered from trigeminal neuropathic pain secondary to nerve compression due to a giant posterior fossa AVM. The pain was refractory to drug treatment. From all the therapeutic options available we declined the microvascular decompression of the trigeminal nerve due to the presence of the giant AVM, or stereotactic radiosurgery because of the AVM´s diffuse nidus. After a multidisciplinary discussion we proposed a minimally invasive, safe and reversible treatment: Motor Cortical Stimulation (MCS). We placed a 16-pole epidural electrode on the right precentral gyrus. The patient had satisfactory pain control with some supplemental medication. No complications or side effects such as seizures, sensory disturbances or infections were presented.
    The limited choices of intervention of TNP include peripheral nerve stimulation, trigeminal nucleotomy and MCS. Henssen et al performed a systematic review where they investigated the effectiveness of MCS and discovered that this is significantly different among different chronic neuropathic orofacial pain disorders. A visual analogue scale (VAS) measured median pain relief of 66.5% was found.
    MCS should be one more tool to consider in highly selected cases, when other treatments are unfeasible.
    El dolor neuropático trigeminal (DNT) es un síndrome de dolor facial intenso, incapacitante y constante que surge del nervio o ganglio del trigémino. Las malformaciones arteriovenosas (MAV) son una causa rara de DNT. Las opciones terapéuticas de DNT incluyen la estimulación de los nervios periféricos, la nucleotomía del trigémino y la estimulación cortical motora.
    Presentamos el caso de un varón de 56 años con dolor neuropático trigeminal secundario a compresión nerviosa por una MAV gigante de fosa posterior. El dolor era refractario al tratamiento farmacológico. De todas las opciones terapéuticas disponibles, desestimamos la descompresión microvascular del nervio trigémino por la presencia de la MAV gigante, o la radiocirugía estereotáctica, por ser difuso el nido de la MAV. Tras una discusión multidisciplinar propusimos un tratamiento mínimamente invasivo, seguro y reversible: Estimulación cortical motora (ECM). Colocamos un electrodo epidural en el giro precentral derecho. El paciente tuvo un control satisfactorio del dolor con medicación suplementaria. No presentó complicaciones ni efectos secundarios como convulsiones, alteraciones sensoriales o infecciones.
    Las opciones limitadas de intervención de DNT incluyen estimulación nerviosa periférica, nucleotomía trigeminal y ECM. Henssen et al realizaron una revisión sistemática donde investigaron la efectividad de MCS y descubrieron que esto es significativamente diferente entre los diferentes trastornos de dolor orofacial neuropático crónico. Se encontró un promedio de alivio del dolor medida por una escala analógica visual del 66,5%.
    La ECM debería ser una herramienta más a considerar en casos estrictamente seleccionados donde otros tratamientos no son viables.
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