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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Frequency-doubling illusion ： ウィキペディア英語版 Frequency-doubling illusion The frequency-doubling illusion is an apparent doubling of spatial frequency when a sinusoidal grating is modulated rapidly in temporal counterphase.〔Sun, H., Lee, B. B., White, A. J. R., Swanson, W. H., (2002). Examination of mechanisms underlying the frequency-doubling illusion. Journal of Vision, Volume 2, Number 10, Abstract 9, Page 9a〕 Recently, it has been proposed that the illusion arises from a spatially nonlinear ganglion cell class.〔Maddess, T., Goldberg, I., Dobinson, J., Wine, S., Welsh, A.H. & James, A.C. (1999). Testing for glaucoma with the spatial frequency doubling illusion. Vision Research, 39, 4258-4273.g〕 The presence of this illusion therefore indicates abnormalities in the retina such as glaucoma. A more recent study's results argue against the hypothesis that spatially nonlinear retinal ganglion cells are the physiological substrate of the frequency-doubling illusion. A cortical loss of temporal phase discrimination may be the principal cause of the illusion, whereas spatial phase information (i.e., grating position) is retained.〔Sun, H., Lee, B. B., White, A. J. R., Swanson, W. H., (2002).Examination of mechanisms underlying the frequency-doubling illusion. Journal of Vision, Volume 2, Number 10, Abstract 9, Page 9a〕 Sensitivity to the spatial-frequency-doubling illusion was also positively correlated with reading lag and coherent motion. The results provide good support for a magno deficit in dyslexia that has its origins at a retinal level with impairment in—at least partially—M(y)-cell activity.〔(Perception ECVP 2001 )〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Frequency-doubling illusion」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.