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Directional performances with moving plaids: Component-related and plaid-related processing modes coexist

Tests the prediction that the perceived direction of coherent plaids should be unaffected by the direction of one or the other of their component gratings provided that the direction predicted by the intersection of the lines of constraint (or blobs) remains unchanged. An experimental paradigm that uses a compound stimulus with only one drifting component is employed in a series of threshold and reaction time (RT) experiments. Results show that the directional perception of complex drifting stimuli depends on the directional analysis of both their Fourier components and their higher contrast regions. (PsycINFO Database Record (c) 2005 APA, all rights reserved)



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