Two distinct cone-opponent processes in the L+M luminance pathway

Sei ichi Tsujimura, Satoshi Shioiri, Atsuo Nuruki

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We measured phase shifts between Long-wavelength cone (L-cone) and Middle-wavelength cone (M-cone) signals as well as sensitivity in the luminance pathway either following a cone-silent substitution of colored background or on a steady colored background. In background substitution, the phase shifts between L- and M-cone signals varied only slightly depending on the substituted color, whereas marked elevation of the threshold following the substitution of colored background was found. In contrast, the phase shifts, as well as threshold, varied largely, depending on the background color in the steady background. These facts suggest that suppression by the cone-opponent process for background color substitution is different from the one for a steady colored background.

Original languageEnglish
Pages (from-to)1839-1854
Number of pages16
JournalVision research
Issue number14
Publication statusPublished - 2007 Jun


  • Chromatic adaptation
  • Cone-silent substitution
  • Luminance mechanism
  • Phase shift between cones

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems


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