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.
- vision sciences
- motion processing
Simmers, A. J., Ledgeway, T., Hutchinson, C. V., & Knox, P. J. (2011). Visual deficits in amblyopia constrain normal models of second-order motion processing. Vision Research, 51(18), 2008-2020. https://doi.org/10.1016/j.visres.2011.07.012