Physiological fluctuations show frequency-specific networks in fNIRS signals during resting state

Raul Fernandez Rojas, Xu Huang, Jesus Hernandez-Juarez, Keng Liang Ou

研究成果: 書貢獻/報告類型會議貢獻

5 引文 斯高帕斯(Scopus)

摘要

Physiological fluctuations are commonly present in functional studies of hemodynamic response such as functional magnetic resonance imaging (fMRI) and functional near-infrared spectroscopy (fNIRS). However, the effects of these signals in neural mechanisms are not fully understood. Thus, the aim of this study is to propose that frequency-specific networks exist in the somatosensory region within the frequency range of physiological fluctuations. We used a wavelet coherence approach to identify functional connectivity between cortical regions. Based on the spectral response, four frequency bands were identified: cardiac (0.8-1.5 Hz), respiration (0.16-0.6 Hz), low frequency oscillations (LFO) (0.04-0.15 Hz), and very low frequency oscillations (VLFO) (0.0130.04 Hz). Eight cortical networks were revealed after ipsilateral and contralateral analysis to evaluate connectivity in each frequency band. The ANOVA analysis proved the adequacy of the connectivity map for all frequencies bands. Finally, these findings suggest possible frequency-specific organizations within the frequency bands of physiological fluctuations in the resting human brain.

原文英語
主出版物標題2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
主出版物子標題Smarter Technology for a Healthier World, EMBC 2017 - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
頁面2550-2553
頁數4
ISBN(電子)9781509028092
DOIs
出版狀態已發佈 - 九月 13 2017
事件39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2017 - Jeju Island, 大韓民國
持續時間: 七月 11 2017七月 15 2017

其他

其他39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2017
國家大韓民國
城市Jeju Island
期間7/11/177/15/17

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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    Fernandez Rojas, R., Huang, X., Hernandez-Juarez, J., & Ou, K. L. (2017). Physiological fluctuations show frequency-specific networks in fNIRS signals during resting state. 於 2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Smarter Technology for a Healthier World, EMBC 2017 - Proceedings (頁 2550-2553). [8037377] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EMBC.2017.8037377