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Optical mapping of the dominant frequency of brain signal oscillations in motor systems
Lu,Feng Mei1; Wang,Yi Feng2; Zhang,Juan3; Chen,Hua Fu2; Yuan,Zhen1
2017-12-01
Source PublicationScientific Reports
ISSN20452322
Volume7Issue:1
AbstractRecent neuroimaging studies revealed that the dominant frequency of neural oscillations is brain-region-specific and can vary with frequency-specific reorganization of brain networks during cognition. In this study, we examined the dominant frequency in low-frequency neural oscillations represented by oxygenated hemoglobin measurements after the hemodynamic response function (HRF) deconvolution. Twenty-nine healthy college subjects were recruited to perform a serial finger tapping task at the frequency of 0.2 Hz. Functional near-infrared spectroscopy (fNIRS) was applied to record the hemodynamic signals over the primary motor cortex, supplementary motor area (SMA), premotor cortex, and prefrontal area. We then explored the low frequency steady-state brain response (lfSSBR), which was evoked in the motor systems at the fundamental frequency (0.2 Hz) and its harmonics (0.4, 0.6, and 0.8 Hz). In particular, after HRF deconvolution, the lfSSBR at the frequency of 0.4 Hz in the SMA was identified as the dominant frequency. Interestingly, the domain frequency exhibited the correlation with behavior data such as reaction time, indicating that the physiological implication of lfSSBR is related to the brain anatomy, stimulus frequency and cognition. More importantly, the HRF deconvolution showed its capability for recovering signals probably reflecting neural-level events and revealing the physiological meaning of lfSSBR.
DOI10.1038/s41598-017-15046-9
URLView the original
Language英语
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Cited Times [WOS]:3   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorYuan,Zhen
Affiliation1.Bioimaging Core,Faculty of Health Sciences,University of Macau,,Macao
2.Key Laboratory for NeuroInformation of Ministry of Education,School of Life Science and Technology,University of Electronic Science and Technology of China,,Chengdu,610054,China
3.Faculty of Education,University of Macau,,Macao
First Author AffilicationFaculty of Health Sciences
Corresponding Author AffilicationFaculty of Health Sciences
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GB/T 7714
Lu,Feng Mei,Wang,Yi Feng,Zhang,Juan,et al. Optical mapping of the dominant frequency of brain signal oscillations in motor systems[J]. Scientific Reports,2017,7(1).
APA Lu,Feng Mei,Wang,Yi Feng,Zhang,Juan,Chen,Hua Fu,&Yuan,Zhen.(2017).Optical mapping of the dominant frequency of brain signal oscillations in motor systems.Scientific Reports,7(1).
MLA Lu,Feng Mei,et al."Optical mapping of the dominant frequency of brain signal oscillations in motor systems".Scientific Reports 7.1(2017).
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