Visual deficits in amblyopia constrain normal models of second-order motion processing

A.J. Simmers, T. Ledgeway, C.V. Hutchinson, Pamela Jane Knox

Research output: Contribution to journalArticle


It is well established that amblyopes exhibit deficits in processing first-order (luminance-defined) patterns. This is readily manifest by measuring spatiotemporal sensitivity (i.e. the “window of visibility”) to moving luminance gratings. However the window of visibility to moving second-order (texture-defined) patterns has not been systematically studied in amblyopia. To address this issue monocular modulation sensitivity (1/threshold) to first-order motion and four different varieties of second-order motion (modulations of either the contrast, flicker, size or orientation of visual noise) was measured over a five-octave range of spatial and temporal frequencies.
Original languageEnglish
Pages (from-to)2008-2020
Number of pages13
JournalVision Research
Issue number18
Publication statusPublished - Sep 2011



  • vision sciences
  • amblyopia
  • motion processing

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