title: Multiregional functional near-infrared spectroscopy reveals globally symmetrical and frequency-specific patterns of superficial interference.
abstract: Linear regression with short source-detector separation channels (S-channels) as references is an efficient way to overcome significant physiological interference from the superficial layer for functional near-infrared spectroscopy (fNIRS). However, the co-located configuration of S-channels and long source-detector separation channels (L-channels) is difficult to achieve in practice. In this study, we recorded superficial interference with S-channels in multiple scalp regions. We found that superficial interference has overall frequency-specific and globally symmetrical patterns. The performance of linear regression is also dependent on these patterns, indicating the possibility of simplifying the S-channel configurations for multiregional fNIRS imaging.
authors: State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China ; Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing, China.
authors: Yujin
authors: Y
authors: Zhang
authors: State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China.
authors: Fulun
authors: F
authors: Tan
authors: State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China.
authors: Xu
authors: X
authors: Xu
authors: State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China.
authors: Lian
authors: L
authors: Duan
authors: Department of Bioengineering, the University of Texas at Arlington, Arlington, TX 76010 USA.
authors: Hanli
authors: H
authors: Liu
authors: Department of Bioengineering, the University of Texas at Arlington, Arlington, TX 76010 USA ; fenghua.tian@uta.edu.
authors: Fenghua
authors: F
authors: Tian
authors: State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China.
authors: Chao-Zhe
authors: CZ
authors: Zhu
keywords: (170.2655) Functional monitoring and imaging; (170.3880) Medical and biological imaging; (170.5380) Physiology; (170.6960) Tomography