title: The role of stimulus factors in making categorical and coordinate spatial judgments.
abstract: We report three experiments which investigate the lateralization of categorical and coordinate processing. In all experiments, participants judged the position of a dot relative to a line. We manipulated display luminance (controlling for contrast), polarity (black-on-white versus white-on-black displays), and exposure duration (100, 150, and 200 ms). The results showed a left visual field-right hemisphere advantage for coordinate judgments, but only under highly prescribed conditions. We argue that stimulus and procedural factors are critical in determining the hemisphere by task interaction.
authors: Department of Psychology, University of Kent, Canterbury, CT2 7NP, United Kingdom.
authors: D
authors: D
authors: Wilkinson
authors: N
authors: N
authors: Donnelly
mesh_terms: D001921:Brain / Q000502:physiology; D005260:Female; D005403:Fixation, Ocular / Q000502:physiology; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D007600:Judgment / Q000502:physiology*; D008297:Male; D013028:Space Perception / Q000502:physiology*; D011795:Surveys and Questionnaires; D014794:Visual Fields / Q000502:physiology