Fast perceptual priming in the left and right hemispheres.
Visual field differences in fast perceptual priming of possible and impossible object decisions were investigated in a go/no-go task. Each participant (n = 74) was tested in two blocks of trials, each block containing 128 combinations of same-field and cross-field presentations of prime (blank) and target stimuli. The results indicate that fast perceptual priming of object decisions recruits processes that involve both cerebral hemispheres, independent of pre-existing representation. The priming effect was larger for possible than for impossible objects, but fast perceptual priming of object-decisions was demonstrated for both possible and impossible objects, in terms of both reaction times and accuracy. Left-hemisphere specific priming for impossible stimuli may be due to a left hemisphere encoding advantage for impossible parts, consistent with a structural description account.
Department of Psychology, Stanford University, USA. m.s.korsnes@psykologi.uio.no
Maria Stylianou
MS
Korsnes
Svein
S
Magnussen
D000328:Adult; D001921:Brain / Q000502:physiology*; D003657:Decision Making; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008297:Male; D011930:Reaction Time; D017603:Signal Detection, Psychological; D014796:Visual Perception