Filling-in of the foveal blue scotoma

Svein Magnussen, Lothar Spillmann, Frank Stürzel, John S Werner

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


The blue-blindness (tritanopia) of the human foveola normally goes unnoticed but can be directly visualized by having observers view a flickering, monochromatic, short-wavelength field. The blue scotoma appears as a tiny dark spot in central vision, the visibility of which depends upon the wavelength of the field and the temporal frequency of modulation. Comparisons of fading times as a function of flicker frequency for the blue scotoma, foveal afterimages and optically stabilized images indicate a common time course, consistent with the hypothesis that perceptual filling-in of the foveal blue scotoma reflects the operation of neural processes similar to those involved in fading and regeneration of stabilized images.

Original languageEnglish (US)
Pages (from-to)2961-2967
Number of pages7
JournalVision Research
Issue number23
StatePublished - 2001


  • Foveal blue-blindness
  • Perceptual filling-in
  • Scotoma
  • Stabilized images

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems


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