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Studies on visual perception mechanism using magnetoenc ephalography

Research Project

Project/Area Number 11670651
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Neurology
Research InstitutionNational Institute for Physiological Sciences

Principal Investigator

KANEOKE Yoshiki  Okazaki National Research Institute, National Institute for Physiological Sciences, Associate Professor, 生理学研究所, 助教授 (20280589)

Co-Investigator(Kenkyū-buntansha) KOYAMA Sachiko  Okazaki National Research Institute, National Institute for Physiological Sciences, Research Associate, 生理学研究所, 助手 (40270483)
KAKIGI Ryusuke  Okazaki National Research Institute, National Institute for Physiological Sciences, Professor, 生理学研究所, 教授 (10145196)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2000: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1999: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywordsvisual system / human / apparent motion / random dot kinematogram / MT / V5 / magnetoencephalography / 運動視 / VS
Research Abstract

We used magnetoencephalography to study inter-individual locational difference in the extrastriate region which responds to visual motion. Magnetic responses to visual motion onset from the right temporo-occipital area were recorded from 12 subjects. All the subjects had clear responses to apparent or random dot coherent motion. The origins of these responses was investigated by use of the single equivalent current dipole model. The nearest scalp to the origin also was identified for each subject, which may be useful in transcranial stimulation studies. Although the magnetic responses of all the subjects should have the same functional properties ; be related to neural activities synchronized exclusively to the onset of motion, the estimated origins varied greatly among the subjects. The location of origin could be classified as one of three types : temporo-occipital, occipital, or parietal, according to the sulcal anatomy investigated in the individual's three-dimensional magnetic resonance image. Temporo-occipital types were found for seven subjects, and anatomically the regions were around human MT/V5. Two subjects had the occipital type, with regions posterior to the anatomical MT/V5 and corresponding to V3A anatomically. The other three subjects had origins classified as the parietal type dorso-rostral to the anatomical MT/V5, with regions around the posterior end of the superior temporal sulcus. Although all these cortical regions appear to be related to the neural process of visual motion, whether they correspond functionally to the same names or migrated MT/V5 must now be determined.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] Lam,K., et al.: "Magnetic response of human extrastriate cortex in the detection of coherent and incoherent motion"Neuroscience. 97. 1-10 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kawakami,O., et al.: "Perception of apparent motion is related to the neural activity in the human extrastriate cortex as measured by magnetoencep halography"Neuroscience Letters. 285. 135-138 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Bundo,M., et al.: "Human visual motion areas determined individually by magnetoencep halography and 3D magnetic resonance imaging"Human Brain Mapping. 11. 33-45 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Naito,T., et al.: "Asymmetry of the human visual field in magnetic response to apparent motion"Brain Research. 865. 221-226 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Bundo, M., Kaneoke, Y., Inao, S., Yoshida, J., Nakamura, A., and Kakigi, R.: "Human visual motion areas determined individually by magnetoencephalography and 3D magnetic resonance imaging"Hum Brain Mapp. 11. 33-45 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kawakami, O., Kaneoke, Y., and Kakigi, R: "Perception of apparent motion is related to the neural activity in the human extrastriate cortex as measured by magnetoencephalography."Neurosci Lett. 285. 135-138 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Lam, K., Kaneoke, Y., Gunji, A., Yamasaki, H., Matsumoto, E., Naito, T., and Kakigi, R.: "Magnetic response of human extrastriate cortex in the detection of coherent and incoherent motion"Neuroscience. 97. 1-10 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Naito, T., Kaneoke, Y., Osaka, N., and Kakigi, R.: "Asymmetry of the human visual field in magnetic response to apparent motion."Brain Res. 865. 221-226 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Lam,K., et al.: "Magnetic response of human extrastriate cortex in the detection of coherent and incoherent motion"Neuroscience. 97,1. 1-10 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kawakami,O., et al.: "Perception of apparent motion is related to the neural activity in the human extrastriate cortex as measured by magnetoencephalography"Neuroscience Letters. 285. 135-138 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Bundo,M., et al.: "Human visual motion areas determined individually by magnetoencephalography and 3D magnetic resonance imaging"Human Brain Mapping. 11. 33-45 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Naito,T., et al.: "Asymmetry of the human visual field in magnetic response to apparent motion"Brain Research. 865. 221-226 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Lam K. et al.: "Magnetic response of human extrastriate vortex in the detection of coherent and incoherent motion"Neuroscience. (in press). (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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