Spatiotemporal analysis of brain activity response using near infrared spectroscopy

Xu HUANG, Keng Ou

    Research output: Contribution to journalArticle

    Abstract

    —Near infrared spectroscopy (NIRS) is an optical imaging tool that provides cerebral hemodynamics in response to changes in neural activity. Analysis of hemodynamic response to evoked stimulation is a research topic that tries to understand the mechanism of stimulation perception. In that context, cross correlation and optical flow were used to identify spatiotemporal features of brain activity after acupuncture stimulation in NIRS data. The results presented bilateral activations in the primary somatosensory cortex which were consistent with similar studies. The time dependent cross correlation analysis exhibited dominant channels and delays among channels that can be seen as relationships between cortical areas. The optical flow computation showed the origin of cortical activity and the spatial distribution of the evoked response in the brain cortex. This study contributes to the research field to investigate hemodynamic response in the cerebral cortex after evoked stimulation using near infrared spectroscopy.
    Original languageEnglish
    Pages (from-to)1-6
    Number of pages6
    JournalInternational Journal of Pharma Medicine and Biological Sciences
    Volume5
    Issue number1
    DOIs
    Publication statusPublished - 2016

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    Spatio-Temporal Analysis
    Near infrared spectroscopy
    Near-Infrared Spectroscopy
    Hemodynamics
    Brain
    Optical flows
    Acupuncture
    Somatosensory Cortex
    Optical Imaging
    Research
    Cerebral Cortex
    Spatial distribution
    Chemical activation
    Imaging techniques

    Cite this

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    abstract = "—Near infrared spectroscopy (NIRS) is an optical imaging tool that provides cerebral hemodynamics in response to changes in neural activity. Analysis of hemodynamic response to evoked stimulation is a research topic that tries to understand the mechanism of stimulation perception. In that context, cross correlation and optical flow were used to identify spatiotemporal features of brain activity after acupuncture stimulation in NIRS data. The results presented bilateral activations in the primary somatosensory cortex which were consistent with similar studies. The time dependent cross correlation analysis exhibited dominant channels and delays among channels that can be seen as relationships between cortical areas. The optical flow computation showed the origin of cortical activity and the spatial distribution of the evoked response in the brain cortex. This study contributes to the research field to investigate hemodynamic response in the cerebral cortex after evoked stimulation using near infrared spectroscopy.",
    keywords = "hemodynamic-response, optical-flow, cortical-activity",
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    Spatiotemporal analysis of brain activity response using near infrared spectroscopy. / HUANG, Xu; Ou, Keng.

    In: International Journal of Pharma Medicine and Biological Sciences, Vol. 5, No. 1, 2016, p. 1-6.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Spatiotemporal analysis of brain activity response using near infrared spectroscopy

    AU - HUANG, Xu

    AU - Ou, Keng

    PY - 2016

    Y1 - 2016

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    AB - —Near infrared spectroscopy (NIRS) is an optical imaging tool that provides cerebral hemodynamics in response to changes in neural activity. Analysis of hemodynamic response to evoked stimulation is a research topic that tries to understand the mechanism of stimulation perception. In that context, cross correlation and optical flow were used to identify spatiotemporal features of brain activity after acupuncture stimulation in NIRS data. The results presented bilateral activations in the primary somatosensory cortex which were consistent with similar studies. The time dependent cross correlation analysis exhibited dominant channels and delays among channels that can be seen as relationships between cortical areas. The optical flow computation showed the origin of cortical activity and the spatial distribution of the evoked response in the brain cortex. This study contributes to the research field to investigate hemodynamic response in the cerebral cortex after evoked stimulation using near infrared spectroscopy.

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