Multiregional functional near-infrared spectroscopy reveals globally symmetrical and frequency-specific patterns of superficial interference
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Date
2015-08-01Author
Zhang, Yujin
Tan, Fulun
Xu, Xu
Duan, Lian
Liu, Hanli
Tian, Fenghua
Zhu, Chao-Zhe
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Show full item recordAbstract
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 nearinfrared spectroscopy (fNIRS). However, the co-located configuration of Schannels 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 Schannel configurations for multiregional fNIRS imaging.