TY - GEN
T1 - Signal processing for bilateral brain network in a somatosensory region based on near-infrared spectroscopy (NIRS) by wavelet time and frequency analysis
AU - Huang, Xu
AU - Madoc, Allan C.
N1 - Funding Information:
This project has been a part of the research collaboration between the University of Canberra, Australia and Taipei Medical University, Taiwan. We are expecting some
Funding Information:
In order to keep the outcomes being stable and accuracy, all acupuncture performances were done by a selected acupuncturist at Taipei Medical University Hospital. Procedures and methods used in this study were conducted in accordance with the guidelines accepted by the Declaration of Helsinki. This research study has been approved by full-board review process of the TMU-Joint Institutional Review Board under contract number 201307010.
Publisher Copyright:
© 2017 IEEE.
PY - 2017/5/6
Y1 - 2017/5/6
N2 - Signal processing of brain activity poses challenges to various researchers from different areas, including medical, biomedical, and engineering researchers. Near-infrared spectroscopy (NIRS), as signal detecting and processing, has been used in medical imaging to obtain oxygenation and hemodynamic response in the cerebral cortex. As one of updated techniques, it has been evidenced useful, efficient, and effective in the medical examinations. It applied in cortical activation detection and functional connectivity in brain research. Despite some advances in functional lateralization, most of the studies have focused on the prefrontal cortex but little has been done to study the somatosensory region (S1). For this reason, the aim of our current study is to assess bilateral connectivity in the somatosensory region by using NIRS and noxious stimulation. A few healthy subjects were investigated using near-infrared spectroscopy during an acupuncture stimulation procedure to safely induce pain in subjects. A multiscale analysis based on wavelet transform coherence (WTC) was designed to assess the functional connectivity of corresponding channel pairs within the left and right S1 region. The distributions of the reactions based on WTC in the brain after the stimulations are presented by both time region and frequencies domain. The coherence in time-frequency domain between homologous signals generated by contralateral channel pairs increased during stimulation tasks but not during resting time. This study will contribute to the research field to investigate cerebral hemodynamic response of pain perception using NIRS.
AB - Signal processing of brain activity poses challenges to various researchers from different areas, including medical, biomedical, and engineering researchers. Near-infrared spectroscopy (NIRS), as signal detecting and processing, has been used in medical imaging to obtain oxygenation and hemodynamic response in the cerebral cortex. As one of updated techniques, it has been evidenced useful, efficient, and effective in the medical examinations. It applied in cortical activation detection and functional connectivity in brain research. Despite some advances in functional lateralization, most of the studies have focused on the prefrontal cortex but little has been done to study the somatosensory region (S1). For this reason, the aim of our current study is to assess bilateral connectivity in the somatosensory region by using NIRS and noxious stimulation. A few healthy subjects were investigated using near-infrared spectroscopy during an acupuncture stimulation procedure to safely induce pain in subjects. A multiscale analysis based on wavelet transform coherence (WTC) was designed to assess the functional connectivity of corresponding channel pairs within the left and right S1 region. The distributions of the reactions based on WTC in the brain after the stimulations are presented by both time region and frequencies domain. The coherence in time-frequency domain between homologous signals generated by contralateral channel pairs increased during stimulation tasks but not during resting time. This study will contribute to the research field to investigate cerebral hemodynamic response of pain perception using NIRS.
KW - ACO
KW - brain activity
KW - hemodynamic reaction
KW - near infrared spectroscopy
KW - wavelet
UR - http://www.scopus.com/inward/record.url?scp=85049174108&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/signal-processing-bilateral-brain-network-somatosensory-region-based-nearinfrared-spectroscopy-nirs
U2 - 10.1109/ICCSN.2017.8230240
DO - 10.1109/ICCSN.2017.8230240
M3 - Conference contribution
AN - SCOPUS:85049174108
VL - 2017-January
T3 - 2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017
SP - 896
EP - 900
BT - 2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017
PB - IEEE, Institute of Electrical and Electronics Engineers
CY - Guangzhou, China
T2 - 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017
Y2 - 6 May 2017 through 8 May 2017
ER -