Human visual cortex responds to invisible chromatic flicker

  • Jiang Y
  • Zhou K
  • He S
  • 202


    Mendeley users who have this article in their library.
  • 51


    Citations of this article.


When two isoluminant colors alternate at frequencies of 25 Hz or higher, observers perceive only one fused color. Chromatic flicker beyond the fusion frequency induces flicker adaptation in human observers and stimulates monkey V1 neurons. Here we use functional magnetic resonance imaging (fMRI) to show that many human visual cortical areas, with the exception of VO, can distinguish between fused chromatic flicker and its matched nonflickering control. This result supports the existence of significant intracortical temporal filtering of high-frequency chromatic information. The result also suggests that a considerable difference in cortical activation in many visual cortical areas does not necessarily lead to different conscious experiences.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Yi Jiang

  • Ke Zhou

  • Sheng He

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free