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Can rTMS Enhance Somatosensory Recovery After Stroke?

2022年4月4日 更新者：VA Office of Research and Development
Stroke affects over 795,000 Americans every year and has an enormous impact on the well-being of American Veterans with 6,000 new stroke admissions every year. Many of these stroke survivors are living with disabilities that limit their everyday function. One of the major consequences of stroke is loss of sensation which manifests as inability to perceive touch, temperature, pain or limb movement. Lack of sensation hinders full functional recovery. Current treatments for sensory loss produce only limited improvements and do not achieve full recovery. Therefore, it is critical to develop new therapies to re-train sensory function. The investigators propose to evaluate a novel non-invasive brain stimulation treatment called repetitive Transcranial Magnetic Stimulation (rTMS). The effects of this technique on motor deficits following stroke have been studied, however rTMS for the treatment of sensory loss has not been examined to date. The investigators' study will examine for the first time if rTMS of a sensory brain region can improve sensory function in chronic stroke survivors.

研究概览

地位

完全的

条件

干预/治疗

详细说明

Sensory deficits are present in the majority of stroke survivors. Inability to feel movement, touch or pain impairs the investigators' ability to interact with environment and diminished the quality of life. These sensory deficits significantly impair functional activity and slow down recovery during rehabilitation. Currently available sensory rehabilitation techniques can only partially restore sensory function. The main objective of this study is to test a novel approach to improve sensory function after stroke using non-invasive brain stimulation. This pilot study will measure an immediate effect of different repetitive Transcranial Magnetic Stimulation (rTMS) paradigms in a crossover single session design. The effect of intervention is measured with clinical measures of sensory and motor function and with neurophysiological assessment of sensory pathways. If the concept is demonstrated in this pilot study, then following the lead of other investigations of this type, this pilot will provide the foundation to test the efficacy of a long-term multi-session intervention of combined rTMS and peripherally directed therapy.

研究类型

介入性

注册 (实际的)

20

阶段

  • 不适用

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习地点

  • 美国
    • Ohio
      • Cleveland、Ohio、美国、44106
        • Louis Stokes VA Medical Center, Cleveland, OH

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

18年 及以上 (成人、年长者)

接受健康志愿者

不

有资格学习的性别

全部

描述

Inclusion Criteria:

  • Medically stable at least 6 months after first ever stroke.
  • Sufficient endurance to participate in the study.
  • Cognition sufficiently intact to give valid informed consent to participate.
  • Age > 18years.
  • Ability to follow 2 stage commands.
  • Impaired but not absent ability to feel touch, vibration and movement of the affected arm.

Exclusion Criteria:

  • Acute or progressive cardiac, renal, respiratory, neurological disorders or malignancy.
  • Any psychiatric diagnosis or active psychological condition.
  • History of substance abuse within the last 6 months
  • More than one ischemic stroke or stroke affecting both sides.
  • Claustrophobia, or inability to operate the MRI patient call button.
  • Pregnancy or pregnancy planning during the study period.
  • Lower motor neuron damage or radiculopathy
  • Contraindications for rTMS according to the TMS-use guidelines (Rossi et al 2009).
  • Inability to understand English.
  • Significant neglect for those with left-sided deficits.

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

  • 主要用途：治疗
  • 分配：随机化
  • 介入模型：交叉作业
  • 屏蔽：双倍的

武器和干预

参与者组/臂
干预/治疗
其他：High frequency rTMS
Each subject is provided with three different brain stimulation interventions in a single arm, single session crossover design study. One of the sessions was 5 Hz rTMS
其他：repetitive transcranial magnetic stimulation (rTMS)

3 types of interventions on different sessions

  • session 1 - High frequency rTMS targeting contralesional sensory cortex
  • session 2 - Low frequency rTMS
  • session 3 - sham rTMS
其他：peripheral sensory stimulation
peripheral sensory electrical stimulation and vibration of the stroke-affected hand administered concurrently with each rTMS
其他：Low frequency rTMS
Each subject is provided with three different brain stimulation interventions in a single arm, single session crossover design study. One of the sessions was 1 Hz rTMS
其他：repetitive transcranial magnetic stimulation (rTMS)

3 types of interventions on different sessions

  • session 1 - High frequency rTMS targeting contralesional sensory cortex
  • session 2 - Low frequency rTMS
  • session 3 - sham rTMS
其他：peripheral sensory stimulation
peripheral sensory electrical stimulation and vibration of the stroke-affected hand administered concurrently with each rTMS
其他：Sham rTMS
Each subject is provided with three different brain stimulation interventions in a single arm, single session crossover design study. One of the sessions was sham rTMS
其他：repetitive transcranial magnetic stimulation (rTMS)

3 types of interventions on different sessions

  • session 1 - High frequency rTMS targeting contralesional sensory cortex
  • session 2 - Low frequency rTMS
  • session 3 - sham rTMS
其他：peripheral sensory stimulation
peripheral sensory electrical stimulation and vibration of the stroke-affected hand administered concurrently with each rTMS

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Change From Baseline in Two-point Discrimination
大体时间：up to 1 hour after intervention

Baseline measure is collected immediately before the intervention. There are two data collections following each intervention, one datacollection is immediately after the intervention and the second one is at 1 hour after intervention.

Two-point discrimination was measured with Disk-Criminator disks (Baltimore, MD) by determining the subjects' ability to perceive two points on the disk as two separate points rather than as a single point. The distances between the two points ranged between 2 and 15 mm. One and two sensory points were presented in a pseudo-random order to subjects' 4th digit volar fingertip surface. A threshold is determined when seventy percent accuracy is exhibited for identifying the difference between single versus double point stimulation.
up to 1 hour after intervention
Change From Baseline in N20 Somatosensory Evoked Potential(SSEP) Peak Latency
大体时间：up to 1 hour after intervention

Baseline measure is collected immediately before the intervention. Following each intervention, data is collected immediately after each intervention and at 1 hour after intervention.

SEPs were recorded with a Cadwell Sierra Wave (Cadwell, Kennewick, WA) (LSCDVAMC) or with Powerlab 4/25T (AD Instruments Inc. Colorado Springs, CO) and a Grass Stimulator (Natus Neurology, Middleton, WI) (CC)44. The recording electrodes (1 cm diameter, gold cup electrodes filled with conductive paste) were placed 2 cm posterior to C3 & C4 (10-20 international system of EEG electrode placement) and the reference electrode at Fz (Figure 1). Stimulus was applied to the median nerve at the wrist. Ground electrodes were placed at the lateral epicondyle of the stimulated arm. The evoked response from 500 stimuli were recorded and averaged for a single trial. Three SEP trials were recorded then analyzed. Latencies (in milliseconds) were determined for N20.
up to 1 hour after intervention

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

VA Office of Research and Development

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

一般刊物

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2012年4月12日

初级完成 (实际的)

2019年6月1日

研究完成 (实际的)

2022年4月1日

研究注册日期

首次提交

2016年6月21日

首先提交符合 QC 标准的

2016年6月21日

首次发布 (估计)

2016年6月23日

研究记录更新

最后更新发布 (实际的)

2022年4月29日

上次提交的符合 QC 标准的更新

2022年4月4日

最后验证

2022年4月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • N1767-P
  • 12025-H13 (其他标识符：Louis Stokes Cleveland VA Medical Center IRB)

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

不

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

不

在美国制造并从美国出口的产品

不

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