Cheong Daniel, Zhang Fan, Kim Kaitlyn, Reid Adaira, Hanan Cameron, Ding Lei, Yuan Han
Annu Int Conf IEEE Eng Med Biol Soc. 2020 Jul;2020:948-951. doi: 10.1109/EMBC44109.2020.9176366.
Functional near-infrared spectroscopy (fNIRS) has the potential to become the next common noninvasive neuroimaging technique for routine clinical use. Compared to the current standard for neuroimaging, functional magnetic resonance imaging (fMRI), fNIRS boasts several advantages which increase its likelihood for clinical adoption. However, fNIRS suffers from an intrinsic interference from the superficial tissues, which the near-infrared light must penetrate before reaching the deeper cerebral cortex. Therefore, the removal of signals captured by SS channels has been proposed to attenuate the systematic interference. This study aimed to investigate the task-related systemic artefacts, in a high-density montage covering the sensorimotor cortex. We compared the association between LS and SS channels over the contralateral motor cortex which was activated by a hand clenching task, with that over the ipsilateral cortex where no task-related activation was expected. Our findings provide important guidelines regarding how to removal SS signals in a high-density whole-head montage.
功能近红外光谱技术（fNIRS）有潜力成为下一种常规临床使用的常见非侵入性神经成像技术。与当前神经成像的标准——功能磁共振成像（fMRI）相比，fNIRS具有多项优势，这增加了其在临床应用中的可能性。然而，fNIRS受到来自浅表组织的固有干扰，近红外光在到达更深层的大脑皮层之前必须穿透这些浅表组织。因此，有人提出去除由SS通道捕获的信号，以减弱这种系统性干扰。本研究旨在研究在覆盖感觉运动皮层的高密度导联中与任务相关的系统性伪影。我们比较了在对侧运动皮层上由手部紧握任务激活的LS和SS通道之间的关联，以及在同侧皮层上预期无任务相关激活的LS和SS通道之间的关联。我们的研究结果为如何在高密度全脑导联中去除SS信号提供了重要指导。
