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Clinical application of Visually Evoked Cortical Potential using color stimuli Akito Shirakawa 1 1Department of Ophthalmology, Jikei Medical College pp.1001-1007
Published Date 1981/6/15
DOI https://doi.org/10.11477/mf.1410208376
  • Abstract
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Visually evoked cortical potential (VECP) was recorded by stimulating the fovea with 440, 540 or 610 nm monochromatic light for either 10 or 200 msec. In 4 normal eyes (2 subjects), light stimulus stronger by 1.25 log unit over the threshold value was necessary to induce the appearnce of P1 wave for 440 nm. For wavelengths of 540 and 610 nm, stimulus stronger by 0.5 to 0.75 log unit over the threshold value sufficed to induce P1. This finding indicated that a different mechanism is involved in the production of VECP for the shorter and longer wavelength light stimuli.


Copyright © 1981, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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