title: Resting-state functional connectivity assessed with two diffuse optical tomographic systems.
abstract: Functional near-infrared spectroscopy (fNIRS) is recently utilized as a new approach to assess resting-state functional connectivity (RSFC) in the human brain. For any new technique or new methodology, it is necessary to be able to replicate similar experiments using different instruments in order to establish its liability and reproducibility. We apply two different diffuse optical tomographic (DOT) systems (i.e., DYNOT and CW5), with various probe arrangements to evaluate RSFC in the sensorimotor cortex by utilizing a previously published experimental protocol and seed-based correlation analysis. Our results exhibit similar spatial patterns and strengths in RSFC between the bilateral motor cortexes. The consistent observations are obtained from both DYNOT and CW5 systems, and are also in good agreement with the previous fNIRS study. Overall, we demonstrate that the fNIRS-based RSFC is reproducible by various DOT imaging systems among different research groups, enhancing the confidence of neuroscience researchers and clinicians to utilize fNIRS for future applications.
authors.affiliation: State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China.
authors.forename: Haijing
authors.initials: H
authors.lastname: Niu
authors.forename: Sabin
authors.initials: S
authors.lastname: Khadka
authors.forename: Fenghua
authors.initials: F
authors.lastname: Tian
authors.forename: Zi-Jing
authors.initials: ZJ
authors.lastname: Lin
authors.forename: Chunming
authors.initials: C
authors.lastname: Lu
authors.forename: Chaozhe
authors.initials: C
authors.lastname: Zhu
authors.forename: Hanli
authors.initials: H
authors.lastname: Liu
mesh_terms: D000293:Adolescent; D000328:Adult; D001931:Brain Mapping / Q000379:methods*; D006801:Humans; D009044:Motor Cortex / Q000033:anatomy & histology / Q000502:physiology; D012146:Rest / Q000502:physiology; D012815:Signal Processing, Computer-Assisted; D019265:Spectroscopy, Near-Infrared; D041622:Tomography, Optical / Q000379:methods*; D055815:Young Adult