Compliant head probe for positioning electroencephalography electrodes and near-infrared spectroscopy optodes
Compliant head probe for positioning electroencephalography electrodes and near-infrared spectroscopy optodes
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DOI：
10.1117/1.jbo.18.2.027005
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发表时间：
2013-02-01
影响因子：
3.5
通讯作者：
Diamond, Solomon G.
中科院分区：
文献类型：
--
作者：
Giacometti, Paolo;Diamond, Solomon G.
提出了一种结合近红外光谱（NIRS）和脑电图（EEG）的无创头部探头，用于同时测量大脑中的神经动力学和血流动力学。它由一个可伸缩的可伸缩机构和一个弹性网组成，该机构可适应大范围的头部大小变化，当该机构膨胀和收缩时，弹性网可保持传感器在头皮上的均匀接触压力。该设计旨在帮助最大限度地提高光学和电气耦合，并保持头部运动时的稳定性。将电极定位在齿轮、鼻窦、中央和耳前基准位置，机械地形成探头，在10-5头皮坐标下放置64个近红外电极和65个脑电图电极。评估了传感器的放置精度、精度和头皮压力均匀性。均方根（RMS）定位精度为0.89 +/- 0.23 mm，百分比弧细分RMS精度为0.19 +/- 0.15%，5 mm位移时头皮上的平均法向力为2.28 +/- 0.88 N。几何测量表明，探头将适应成人头部尺寸的全部范围。所提出的头部探头的放置精度、精度和传感器接触压力的均匀性是同步nir - eeg无创脑监测数据质量的重要决定因素。(C) 2013 Society of photooptical instruments Engineers (SPIE) [DOI: 10.1117/1.JBO.18.2.027005]
A noninvasive head probe that combines near-infrared spectroscopy (NIRS) and electroencephalography (EEG) for simultaneous measurement of neural dynamics and hemodynamics in the brain is presented. It is composed of a compliant expandable mechanism that accommodates a wide range of head size variation and an elastomeric web that maintains uniform sensor contact pressure on the scalp as the mechanism expands and contracts. The design is intended to help maximize optical and electrical coupling and to maintain stability during head movement. Positioning electrodes at the inion, nasion, central, and preauricular fiducial locations mechanically shapes the probe to place 64 NIRS optodes and 65 EEG electrodes following the 10-5 scalp coordinates. The placement accuracy, precision, and scalp pressure uniformity of the sensors are evaluated. A root-mean-squared (RMS) positional precision of 0.89 +/- 0.23 mm, percent arc subdivision RMS accuracy of 0.19 +/- 0.15%, and mean normal force on the scalp of 2.28 +/- 0.88 N at 5 mm displacement were found. Geometric measurements indicate that the probe will accommodate the full range of adult head sizes. The placement accuracy, precision, and uniformity of sensor contact pressure of the proposed head probe are important determinants of data quality in noninvasive brain monitoring with simultaneous NIRS-EEG. (C) 2013 Society of Photo-Optical Instrumentation Engineers (SPIE) [DOI: 10.1117/1.JBO.18.2.027005]