Dynamics of hemoglobin states in the sensorimotor cortex during motor tasks

A functional near infrared spectroscopy study

Chia Feng Lu, Shin Teng, Yu Te Wu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

In this study, we used functional near infrared spectroscopy (fNIRS) imaging to investigate the independent levels of oxygenated, deoxygenated, and total hemoglobin (oxy-Hb, deoxy-Hb, and total-Hb, respectively) at the sensorimotor cortex during hand-grasping motor tasks. Our results showed that the activation of contralateral primary motor cortex (M1) exhibited increased oxy-Hb and reduced dexoy-Hb after hand grasping began. Meanwhile, the contralateral primary somatosensory cortex (S1) was deactivated with reductions of both oxy-Hb and deoxy-Hb concentration. The Hb circulation patterns indicated that the hand grasping demanded rapid and sufficient O2 supply at contralateral M1, which was achieved by the local vasodilation. The contralateral S1 presented decreased total-Hb via the mechanism of vasoconstriction, and maintained the local oxygenation level in a relatively stable state (mostly with O2 debt) to compensate the blood demanding at nearby M1. This study presented that fNIRS data can efficiently differentiate the activation of M1 from the deactivation of S1 during motor tasks, which can provide full interpretations of hemodynamic response to the neuronal activation in comparison with the Blood Oxygenation Level Dependent signal of functional magnetic resonance imaging.

Original languageEnglish
Title of host publication2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013
Pages1803-1806
Number of pages4
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013 - Osaka, Japan
Duration: Jul 3 2013Jul 7 2013

Conference

Conference2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013
CountryJapan
CityOsaka
Period7/3/137/7/13

Fingerprint

Near infrared spectroscopy
Near-Infrared Spectroscopy
Hemoglobin
Hemoglobins
Oxygenation
Hand
Chemical activation
Blood
Somatosensory Cortex
Motor Cortex
Hemodynamics
Vasoconstriction
Vasodilation
Magnetic Resonance Imaging
Imaging techniques
Sensorimotor Cortex

ASJC Scopus subject areas

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

Cite this

Lu, C. F., Teng, S., & Wu, Y. T. (2013). Dynamics of hemoglobin states in the sensorimotor cortex during motor tasks: A functional near infrared spectroscopy study. In 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013 (pp. 1803-1806). [6609872] https://doi.org/10.1109/EMBC.2013.6609872

Dynamics of hemoglobin states in the sensorimotor cortex during motor tasks : A functional near infrared spectroscopy study. / Lu, Chia Feng; Teng, Shin; Wu, Yu Te.

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013. 2013. p. 1803-1806 6609872.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lu, CF, Teng, S & Wu, YT 2013, Dynamics of hemoglobin states in the sensorimotor cortex during motor tasks: A functional near infrared spectroscopy study. in 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013., 6609872, pp. 1803-1806, 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013, Osaka, Japan, 7/3/13. https://doi.org/10.1109/EMBC.2013.6609872
Lu CF, Teng S, Wu YT. Dynamics of hemoglobin states in the sensorimotor cortex during motor tasks: A functional near infrared spectroscopy study. In 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013. 2013. p. 1803-1806. 6609872 https://doi.org/10.1109/EMBC.2013.6609872
Lu, Chia Feng ; Teng, Shin ; Wu, Yu Te. / Dynamics of hemoglobin states in the sensorimotor cortex during motor tasks : A functional near infrared spectroscopy study. 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013. 2013. pp. 1803-1806
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