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Perception of direction of motion reflects the early integration of first and second-order stimulus spatial properties
2008
Journal of Vision
Second-order Type I and Type II plaids were constructed by combining two orientation-filtered random-dot gratings. Each component consisted of a dynamic filtered random-dot field, the contrast of which was modulated by a drifting sinusoidal grating. Orienting the two components suitably and interleaving at 120 Hz allowed us to produce a two-dimensional plaid pattern made from one-dimensional second-order components. The perceived direction of motion of both Type I and Type II plaids was
doi:10.1167/8.4.12
pmid:18484851
fatcat:bbnhzqnyfjhpnayhwvrolgynci