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首页> 外文期刊>Journal of Neurophysiology >Locating primary somatosensory cortex in human brain stimulation studies: systematic review and meta-analytic evidence
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Locating primary somatosensory cortex in human brain stimulation studies: systematic review and meta-analytic evidence

机译：在人脑刺激研究中定位原发性躯体感杂肠皮质：系统评论和荟萃分析证据

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Transcranial magnetic stimulation (TMS) over human primary somatosensory cortex (S1), unlike over primary motor cortex (M1), does not produce an immediate, objective output. Researchers must therefore rely on one or more indirect methods to position the TMS coil over S1. The "gold standard" method of TMS coil positioning is to use individual functional and structural magnetic resonance imaging (f/sMRI) alongside a stereotactic navigation system. In the absence of these facilities, however, one common method used to locate S1 is to find the scalp location that produces twitches in a hand muscle (e.g., the first dorsal interosseus, M1-FDI) and then move the coil posteriorly to target S1. There has been no systematic assessment of whether this commonly reported method of finding the hand area of S1 is optimal. To do this, we systematically reviewed 124 TMS studies targeting the S1 hand area and 95 fMRI studies involving passive finger and hand stimulation. Ninety- six TMS studies reported the scalp location assumed to correspond to S1-hand, which was on average 1.5-2 cm posterior to the functionally defined M1-hand area. Using our own scalp measurements combined with similar data from MRI and TMS studies of M1-hand, we provide the estimated scalp locations targeted in these TMS studies of the S1-hand. We also provide a summary of reported S1 coordinates for passive finger and hand stimulation in fMRI studies. We conclude that S1-hand is more lateral to M1-hand than assumed by the majority of TMS studies.
机译：在人初级躯体感染术中的经颅磁刺激（TMS），与初级电机皮质（M1）不同，不产生立即的客观的输出。因此，研究人员必须依赖于一个或多个间接方法来定位TMS线圈通过S1。 TMS线圈定位的“金标准”方法是使用立体定向导航系统的各个功能和结构磁共振成像（F / SMRI）。然而，在没有这些设施的情况下，用于定位S1的一个常用方法是找到在手肌（例如，第一背部Interosseus，M1-FDI）中产生抽搐的头皮位置，然后将线圈向后移动到靶S1 。没有系统评估是否常见的查找S1的手区域的方法是最佳的。为此，我们系统地审查了124个TMS研究，旨在瞄准S1手区域和涉及被动手指和手刺激的95个FMRI研究。 90六个TMS研究报告说，假定的头皮位置对应于S1手，其平均为5.5-2厘米，在功能定义的M1手区域。使用我们自己的头皮测量与M1-Hand的MRI和TMS研究的类似数据相结合，我们提供了在S1手中这些TMS研究中的估计的头皮位置。我们还提供了报告的S1坐标，用于FMRI研究中的被动手指和手刺激。我们得出结论，S1-WALL比大多数TMS研究假定的方式更侧向M1 - 手。

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