Two carriers for motion perception: Color and luminance

Thomas V. PapaThomas, Andrei Gorea, Bela Julesz

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


Starting with the experiments of Ramachandran and Gregory (Nature, 275, 55-56, 1978), several psychophysical studies in apparent motion (AM) have established that the perception of motion is significantly impaired at equiluminance. Still debated, however, is whether color alone can resolve ambiguities in AM. We report here on several psychophysical experiments, the quantitative results of which indicate that color does play a substantial role in AM. These findings seem to support recently proposed neurophysiological frameworks according to which there exist significant interactions among the neuronal pathways mediating the perception of basic visual attributes such as color, motion, form and depth.

Original languageEnglish (US)
Pages (from-to)1883-1892
Number of pages10
JournalVision Research
Issue number11
StatePublished - 1991
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ophthalmology
  • Sensory Systems


  • Apparent motion
  • Color
  • Equiluminance
  • Luminance


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