Covert orienting biases in scene-based reference frames: orientation priming and visual field differences.
Performance advantages for stimuli presented in the right versus the left visual field have been found in a variety of attentional tasks. Such advantages were exploited in the present set of studies to examine orientation priming and directional biases in retinotopic and scene-based spatial coordinates. The results demonstrate that directional biases occur within spatial coordinates across orientation transformations that dissociate retinotopic from scene-based visual half fields. The results are discussed concerning the representation of spatial maps in higher visual analysis, the role of spatial coordinates in guiding covert orienting, and methods of presenting stimuli in the right or left visual field to test for functional hemispheric asymmetries.
Robertson
L C
LC
Neurology Service, Veterans Affairs Medical Center, Martinez, California 94553, USA.
D000328:Adult; D001921:Brain / Q000502:physiology; D005403:Fixation, Ocular; D007839:Functional Laterality; D006801:Humans; D008297:Male; D011930:Reaction Time; D014794:Visual Fields; D014796:Visual Perception