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紧凑型共置双模态脑电图/功能近红外光谱多距离传感器

Compact Colocated Bimodal EEG/fNIRS Multi-Distance Sensor.

作者信息

Hameau Frédéric, Planat-Chrétien Anne, Gharbi Sadok, Prada-Mejia Robinson, Thomas Simon, Bonnet Stéphane, Rascle Angélique

机构信息

University Grenoble Alpes, CEA, Leti, F-38000 Grenoble, France.

出版信息

Sensors (Basel). 2025 Sep 4;25(17):5520. doi: 10.3390/s25175520.

DOI:10.3390/s25175520
PMID:40942949
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12431421/
Abstract

At present, it is a real challenge to measure brain signals outside of the lab with portable systems that are robust, comfortable and easy to use. We propose in this article a bimodal electroencephalography-functional near-infrared spectroscopy (EEG-fNIRS) sensor whose spatial geometry allows the robust estimation of colocated electrical and hemodynamic brain activity. The geometry allows for the correction of extra-cerebral activity (short-channel distance) as well as the computation of the spatial gradient of absorbance required in the spatially resolved spectroscopy (SRS) method. The complete system is described, detailing the technical solutions implemented to provide signals at 250 Hz for both synchronized modalities and without crosstalk. The system performances are validated during an N-Back mental workload protocol.

摘要

目前，使用坚固、舒适且易于使用的便携式系统在实验室外测量脑信号是一项真正的挑战。在本文中，我们提出了一种双模态脑电图-功能近红外光谱（EEG-fNIRS）传感器，其空间几何结构能够对共定位的脑电活动和血液动力学活动进行可靠估计。这种几何结构允许校正脑外活动（短通道距离），并能计算空间分辨光谱法（SRS）所需的吸光度空间梯度。本文描述了完整的系统，详细介绍了为在两种同步模式下均以250Hz提供信号且无串扰而实施的技术解决方案。该系统性能在N-回溯心理负荷实验中得到了验证。

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