Flexible head-casts for high spatial precision MEG
Flexible head-casts for high spatial precision MEG
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DOI：
10.1016/j.jneumeth.2016.11.009
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发表时间：
2017-01-30
影响因子：
3
通讯作者：
Barnes, Gareth R.
中科院分区：
文献类型：
--
作者：
Meyer, Sofie S.;Bonaiuto, James;Barnes, Gareth R.
背景：结合脑磁图（MEG）数据，对大脑结构和位置的准确了解为高时间分辨率重建神经活动提供了一种原则性的方法。然而，测量大脑的位置在扫描过程中受到头部运动的影响，并与磁共振成像（MRI）数据进行基于基准的共同配准。这两个因素的不确定性给正演模型带来了误差，限制了数据的空间分辨率。新方法：我们提出了一种在扫描过程中稳定和可靠地重新定位头部的方法，并以低误差进行MRI和MEG数据的共配准。结果：使用这种新的灵活和舒适的受试者特定的头铸原型，我们发现在会话运动
Background: In combination with magnetoencephalographic (MEG) data, accurate knowledge of the brain's structure and location provide a principled way of reconstructing neural activity with high temporal resolution. However, measuring the brain's location is compromised by head movement during scanning, and by fiducial-based co-registration with magnetic resonance imaging (MRI) data. The uncertainty from these two factors introduces errors into the forward model and limit the spatial resolution of the data.New method: We present a method for stabilizing and reliably repositioning the head during scanning, and for co-registering MRI and MEG data with low error.Results: Using this new flexible and comfortable subject-specific head-cast prototype, we find within session movements of