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Japanese

Studies on the Visual Evoked Cortical Potentials to Checkerboard Pattern Reversal Stimuli:Report 1. It's Applications in Refraction Yakoh Chiba 1 , Dosetsu Kanaizuka 1 , Emiko Adachi 2 1Department of Ophthalmology, School of Medicine Chiba University 2First Department of Physiology, School of Medicine Hamamatsu University pp.549-558
Published Date 1975/5/15
DOI https://doi.org/10.11477/mf.1410205287
  • Abstract
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A new apparatus has been developed for ob-taining VECPs to checkerboard pattern revers-al stimulation.

Luminance at a checkerboard sheet produced by polarized filters remains constant during sinusoidal pattern reversal.

The VECP changes at various stimulus par-ameter and its clinical applications as refracti-ve measurements have been studied and the results were as follows.

1) The pattern of the VECPs was sinusoidal in waveform.

2) The reproduceability of the waveform was excellent.

3) The phase-shift and the change of the amplitudes were observed as pattern lum-inance was reduced.


Copyright © 1975, 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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