Dynamic simulation of the dual process model for visual evoked potentials

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  • 視覚誘発電位二元過程モデルの動的シミュレーション

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Description

Computer simulation was carried out for the dual process model of visual evoked potentials (VEPs) to on-off, pulse, double, and train light stimuli (e. g., Yoshida, 1990a). Simulation programs were coded as a “dynamic system” with a simulator (Extend v 1.1) working on a personal computer. A new parameter included in the model was a stimulus value derived from light adaptation, which plays an important role in a dynamic system. A reciprocal triggering mechanism in the on-off system was hypothesized to realize the after discharge of VEPs. For simplification, stimulus conditions were restricted as follows : stimulus size was five degrees in diameter and contrast was high (3.5 in ratio). Basic parameters were the same as those estimated in the former studies of VEPs. The time constant of adaptation and the amplitudes of after discharge were empirically determined. The model waves showed the fundamental features of raw VEPs in the respective conditions of stimulus modulation. The dynamic system simulation of VEP seemed to be valid to represent a structure of the visual system in the computational approach.

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Details 詳細情報について

  • CRID
    1390001205458333824
  • NII Article ID
    130004624494
  • DOI
    10.5674/jjppp1983.12.11
  • ISSN
    02892405
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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