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The perceived direction of motion of a brief visual stimulus that contains fine features reverses if static coarser features are added to it. Here we show that the reversal in perceived direction disappears if the stimulus is reduced in size fro[...]texto impreso
Serrano Pedraza, Ignacio ; Gamonoso Cruz, María J ; Sierra Vázquez, Vicente ; Derrington, Andrew M | Scholar One | 2013Our ability to discriminate motion direction in a Gabor patch diminishes with increasing size and contrast, indicating surround suppression. Discrimination is also impaired by a static low-spatial-frequency patch added to the moving stimulus, su[...]texto impreso
Early visual processing analyses fine and coarse image features separately. Here we show that motion signals derived from fine and coarse analyses are combined in rather a surprising way: Coarse and fine motion sensors representing the same dire[...]texto impreso
Serrano Pedraza, Ignacio ; Sierra Vázquez, Vicente ; Derrington, Andrew M | Optical Society of America | 2013-06In the study of the spatial characteristics of the visual channels, the power spectrum model of visual masking is one of the most widely used. When the task is to detect a signal masked by visual noise, this classical model assumes that the sign[...]
