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Dynamic relationships among neural activity, blood flow, metabolism and functional recovery during activation of impaired brain function

Research Project

Project/Area Number 16500372
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Rehabilitation science/Welfare engineering
Research InstitutionTokyo Metropolitan Organization for Medical Research

Principal Investigator

NEMOTO Masahito  Tokyo Metropolitan Organization for Medical Research, Tokyo Institute of Psychiatry, Integrated Neuroscience, Researcher, 東京都精神医学総合研究所, 研究員 (80370980)

Co-Investigator(Kenkyū-buntansha) HOSHI Yoko  Tokyo Metropolitan Organization for Medical Research, Tokyo Institute of Psychiatry, Integrated Neuroscience, Team leader, 東京都精神医学総合研究所, 副参事研究員 (50332383)
TERAKAWA Susumu  Hamamatsu University School of Medicine, Photon Medical Research Center, Professor, 光量子医学研究センター, 副学長・教授 (50014246)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2006: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2005: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2004: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsOptical Intrinsic Signals / Photochemical Thrombosis / Neurovascular Coupling / Neural Plasticity / Reorganization / Brain Mapping / Functional Recovery / Functional Near-Infrared Spectroscopy
Research Abstract

Our research aim is to investigate relationships among neural activity, blood flow, metabolism and functional recovery during activation of impaired brain function.
1.We first set up automated systems that we could simultaneously measure neural activity (local field potential, LFP, and multiunit activity, MUA) and activity-related hemodynamic responses by imaging of intrinsic signals derived from changes in oxy- and deoxyhemoglobin concentration in rat cerebral cortex during sensory stimulation under chloralose /or isoflurane anesthesia.
2.We applied the systems to a study of unimpaired neurovascular coupling. To investigate how faithfully hemodynamic responses reflect neural interactions in complex stimulation paradigms, we delivered electrical stimulation pulses to contra-and/or ipsilateral rat hindpaw, and simultaneously measured neural (LFP<100Hz, MUA>300Hz) and hemodynamic responses in rat somatosensory cortices. The results are as follows. We observed both neural and hemodynamic si … More gnal responses in the bilateral primary somatosensory areas while applying unilateral stimulation, and we found the medio-caudal shift of the ipsilateral CBV responses relative to the contralateral responses, different-slope linearities in the LFP-MUA relationships, and different transfer functions from neural to hemodynamic signals between the contra-and ipsilateral responses. While applying bilateral stimulation with varying time lags, both neural and hemodynamic signals were strongly suppressed at 40 and 60 ms time-lags, but the hemodynamic signals were slightly enhanced without increases in the neural signals during simultaneous bilateral stimulation. We also found several types of non-linearities in the relationships among LFP, MUA and CBV responses associated with signal genesis and analysis methodology.
3.Now we are investigating neurovascular coupling in a pathological state. We introduced local cerebral ischemia with photochemical thrombosis of feeding arteries supplying the somatosensory cortex with blood. Then we are measuring neural and hemodynamic responses to sensory stimulation. We have not yet reached a clear conclusion. Less

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (31 results)

All 2007 2006 2005 2004

All Journal Article (26 results) Book (5 results)

  • [Journal Article] Neural and hemodynamic responses and their baseline activities : a study of hypercapnic challenge in rats.2007

    • Author(s)
      Nemoto M, Hoshi Y, Sato C, Iguchi Y, Huang J
    • Journal Title

      J Physiol Sci 57 (suppl)

    • NAID

      130005449255

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Intraoperative monitoring of depth dependent hemoglobin concentration changes during carotid endarterectomy by time-resolved spectroscopy.2007

    • Author(s)
      Sato C, Yamaguchi T, Seida M, Ota Y, Yu I, Iguchi Y, Nemoto M, Hoshi Y
    • Journal Title

      Applied Optics 46(14)

      Pages: 29-37

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Intraoperative monitoring of depth dependent hemoglobin concentration changes during carotid endarterectomy by time-resolved spectroscopy.2007

    • Author(s)
      Sato C, Yamaguchi T, Seida M, Ota Y, Yu I, Iguchi Y, UNemoto MU, Hoshi Y.
    • Journal Title

      Applied Optics 10;46(14)

      Pages: 2785-2792

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Neural interactions and their effects on cortical hemodynamics during bilateral somatosensory activation in rats.2007

    • Author(s)
      Nemoto M, Sato C, Iguchi Y, Hashimoto I, Kohno E, Hirano T, Terakawa S, Hoshi Y.
    • Journal Title

      J Neurosci (Submission to)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Neural and hemodynamic responses and their baseline activities : a study of hypercapnic challenge in rats.2007

    • Author(s)
      Nemoto M, Hoshi Y, Sato C, Iguchi Y, Huang J
    • Journal Title

      J Physiol Sci 57

    • NAID

      130005449255

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Interhemispheric neural interactions imaged by hemodynamic signals in rat somatosensory cortices.2007

    • Author(s)
      Nemoto M, Hoshi Y, Sato C, Terakawa S
    • Journal Title

      Neuroscience Research 55

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Intraoperative monitoring of depth dependent hemoglobin concentration changes during carotid endarterectomy by time-resolved spectroscopy.2007

    • Author(s)
      Sata C, Yamaguchi T, Seida M, Ota Y, Yu I, Iguchi Y, Nemoto M, Hoshi Y
    • Journal Title

      Applied Optics 46(14)

      Pages: 29-37

    • Related Report
      2006 Annual Research Report
  • [Journal Article] The dynamics of neural network and microcirculation : interhemispheric interactions and neurovascular coupling2006

    • Author(s)
      Nemoto M, Hoshi Y, Sato C, Terakawa S
    • Journal Title

      J Physiol Sci(名称変更) 56 (suppl)

    • NAID

      130007039024

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Resting hypofrontality in schizophrenia : a study using near-infared time-resolved spectroscopy.2006

    • Author(s)
      Hoshi Y, Shinba T, Sato C, Doi N
    • Journal Title

      Schizophr Res 84

      Pages: 411-420

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Interhemispheric neural interactions imaged by hemodynamic signals in rat somatosensory cortices.2006

    • Author(s)
      Nemoto M, Hoshi Y, Sato C, Terakawa S
    • Journal Title

      Neuroscience Research 55 (suppl)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Resting hypofrontality in schizophrenia : A study using near-infrared time-resolved spectroscopy.2006

    • Author(s)
      Hoshi YU, Shinba T, Sato C, Doi N.
    • Journal Title

      Schizophrenia Research 84

      Pages: 411-420

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Observation of interhemispheric interactions between bilateral somatosensory cortices through activity-related hemodynamic signals.2006

    • Author(s)
      Nemoto M, Hoshi Y, Terakawa S.
    • Journal Title

      J of Physiological Society of Japan (Cover Illustration and Caption )

    • NAID

      130005447586

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Resting hypofrontality in schizophrenia : a study using near-infared time-resolved spectroscopy.2006

    • Author(s)
      Hoshi Y, Shimba T, Sato C, Doi N
    • Journal Title

      Schizophr Res 84

      Pages: 411-420

    • Related Report
      2006 Annual Research Report
  • [Journal Article] The dynamics of neural network and microcirculation : interhemispheric interactions and neurovascular coupling2006

    • Author(s)
      Nemoto M
    • Journal Title

      Japanese J of Physiology 56

    • NAID

      130007039024

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Spatiotemporal evolution of functional hemodynamic changes and their relationship to neuronal activity2005

    • Author(s)
      Sheth S, Nemoto M, Guiou M, Walker M, Pouratian N, Toga AW
    • Journal Title

      J Cereb Blood Flow Metab 25(7)

      Pages: 830-841

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Observation of interhemispheric interactions between bilateral somatosensory cortices through activity-related hemodynamic signals2005

    • Author(s)
      Nemoto M, Hoshi Y
    • Journal Title

      Japanese J of Physiology 55 (suppl)

    • NAID

      130005447586

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Reevaluation of near-infrared light propagation in the adult human head2005

    • Author(s)
      Hoshi Y
    • Journal Title

      J Biomedical Optics 10(6)

      Pages: 64032-64032

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] Spatiotemporal evolution of functional hemodynamic changes and their relationship to neuronal activity.2005

    • Author(s)
      Sheth S, Nemoto M, Guiou M, Walker M, Toga AW.
    • Journal Title

      J Cereb Blood Flow Metab 25(7)

      Pages: 830-841

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Reevaluation of near-infrared light propagation in the adult human head : implications for functional near-infrared spectroscopy.2005

    • Author(s)
      Hoshi YU, Shimada M, Sato C, Iguchi Y.
    • Journal Title

      J Biomedical Optics 10(6)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Spatiotemporal evolution of functional hemodynamic changes and their relationship to neuronal activity2005

    • Author(s)
      Sheth SA
    • Journal Title

      J Cereb Blood Flow Metab 25(7)

      Pages: 830-841

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Observation of interhemispheric interactions between bilateral somatosensory cortices through activity-related hemodynamic signals2005

    • Author(s)
      Nemoto M
    • Journal Title

      Japanese J of Physiology 55

    • NAID

      130005447586

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Spatiotemporal evolution of functional hemodynamic changes and their relationship to neuronal activity.2005

    • Author(s)
      Sheth S, Nemoto M, Guiou M, Walker M, Pouratian N, Toga AW
    • Journal Title

      J Cereb Blood Flow Metab Online pub.March2

      Pages: 1-12

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Functional signal and paradigm dependent linear relationships between synaptic activity and hemodynamic responses in rat somatosensory cortex2004

    • Author(s)
      Nemoto M, Sheth S, Guiou M, Pouratian N, Chen JWY, Toga AW
    • Journal Title

      J Neurosci 24(15)

      Pages: 3850-3861

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Linear and nonlinear relationships between neuronal activity, oxygen metabolism, and hemodynamic responses2004

    • Author(s)
      Sheth S, Nemoto M, Guiou M, Walker M, Pouratian N, Hageman N, Toga AW
    • Journal Title

      Neuron 42

      Pages: 347-355

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Functional signal and paradigm dependent linear relationships between synaptic activity and hemodynamic responses in rat somatosensory cortex.2004

    • Author(s)
      Nemoto M, Sheth S, Guiou M, Pouratian N, Chen JWY, Toga AW.
    • Journal Title

      J Neurosci 24(15)

      Pages: 3850-3861

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Linear and nonlinear relationships between neuronal activity, oxygen metabolism, and hemodynamic responses.2004

    • Author(s)
      Sheth S, Nemoto M, Guiou M, Walker M, Pouratian N, Hageman N, Toga AW.
    • Journal Title

      Neuron 42

      Pages: 347-355

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] 非侵襲,可視化技術ハンドブック(光計測法を用いた脳機能画像,小動物の光学的脳機能イメージング)2007

    • Author(s)
      (分担執筆)根本 正史, 佐藤 知絵
    • Total Pages
      13
    • Publisher
      エヌ ティー エス (NTS)
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] Handbook of Noninvasive and Visualizing Technologies(Ogawa S, Ueno S.eds)2007

    • Author(s)
      Nemoto M, Sato C.
    • Publisher
      NTS inc(in press)
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] 非侵襲, 可視化技術ハンドブック(光計測法を用いた脳機能画像, 小動物の光学的脳機能イメージング)2007

    • Author(s)
      (分担執筆) 根本 正史, 佐藤 知絵
    • Total Pages
      13
    • Publisher
      エヌ ティー エス (NTS)
    • Related Report
      2006 Annual Research Report
  • [Book] Functional near-infrared spectroscopy : Potential and limitation in neuroimaging study. In International Review of Neurobiology2005

    • Author(s)
      Hoshi Y
    • Total Pages
      29
    • Publisher
      Elsevier Academic Press, NY
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] Functional near-infrared spectroscopy : Potential and limitation in neuroimaging study. International Review of Neurobiology2005

    • Author(s)
      Hoshi Y
    • Total Pages
      29
    • Publisher
      Elsevier Academic Press, NY
    • Related Report
      2005 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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