Various Methods in Analyzing fMRI to Evaluate Higher Visual Functions

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  • Sawamura Hiromasa
    Department of Ophthalmology, Graduate School of Medicine, The University of Tokyo

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Other Title
  • fMRI を用いて中枢機能をみる！高次機能を捉えるためのfMRI 解析での工夫

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Description

<p>　Various approaches such as neurophysiology, neuro-anatomy, psychophysics, molecular biology, and neuro-imaging have been employed to evaluate visual functions in the brain. One of the neu ro-imaging techniques useful for evaluating brain activities is functional magnetic resonance im aging（fMRI）, based on blood oxygen level-dependent contrast, which originates from changes in cerebral blood flow and volume and its oxygenation. The fMRI is a strong, non-invasive technique that enables us to use human participants. However, it measures indirect hemodynamic respons es and not direct neural responses. Additionally, it has limited temporal and spatial resolutions. Various analyses have been designed to infer neuronal activities from fMRI, including univariate analysis, adaptation methods, and multi-variate pattern analysis（or multi-voxel pattern analy sis）. In this session, based on the speakerʼs experience, an outline of conventional fMRI and a newly devised analyses, using the selectivity of the single voxel, are presented.</p>

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Details 詳細情報について

  • CRID
    1390575993930817280
  • DOI
    10.11476/shinkeiganka.39.278
  • ISSN
    21882002
    02897024
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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