A DAQ-Device-Based Continuous Wave Near-Infrared Spectroscopy System for Measuring Human Functional Brain Activity
Joint Authors
Li, Xiao-Li
Xu, Gang
Li, Duan
Liu, Xiaomin
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-08-10
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
In the last two decades, functional near-infrared spectroscopy (fNIRS) is getting more and more popular as a neuroimaging technique.
The fNIRS instrument can be used to measure local hemodynamic response, which indirectly reflects the functional neural activities in human brain.
In this study, an easily implemented way to establish DAQ-device-based fNIRS system was proposed.
Basic instrumentation components (light sources driving, signal conditioning, sensors, and optical fiber) of the fNIRS system were described.
The digital in-phase and quadrature demodulation method was applied in LabVIEW software to distinguish light sources from different emitters.
The effectiveness of the custom-made system was verified by simultaneous measurement with a commercial instrument ETG-4000 during Valsalva maneuver experiment.
The light intensity data acquired from two systems were highly correlated for lower wavelength (Pearson’s correlation coefficient r = 0.92, P < 0.01) and higher wavelength (r = 0.84, P < 0.01).
Further, another mental arithmetic experiment was implemented to detect neural activation in the prefrontal cortex.
For 9 participants, significant cerebral activation was detected in 6 subjects (P < 0.05) for oxyhemoglobin and in 8 subjects (P < 0.01) for deoxyhemoglobin.
American Psychological Association (APA)
Xu, Gang& Li, Xiao-Li& Li, Duan& Liu, Xiaomin. 2014. A DAQ-Device-Based Continuous Wave Near-Infrared Spectroscopy System for Measuring Human Functional Brain Activity. Computational and Mathematical Methods in Medicine،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-446965
Modern Language Association (MLA)
Xu, Gang…[et al.]. A DAQ-Device-Based Continuous Wave Near-Infrared Spectroscopy System for Measuring Human Functional Brain Activity. Computational and Mathematical Methods in Medicine No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-446965
American Medical Association (AMA)
Xu, Gang& Li, Xiao-Li& Li, Duan& Liu, Xiaomin. A DAQ-Device-Based Continuous Wave Near-Infrared Spectroscopy System for Measuring Human Functional Brain Activity. Computational and Mathematical Methods in Medicine. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-446965
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-446965