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Full-Text Articles in Social and Behavioral Sciences
Visual Laterality For Letter Comparison: Effects Of Stimulus Factors, Response Factors, And Metacontrol, Joseph B. Hellige
Visual Laterality For Letter Comparison: Effects Of Stimulus Factors, Response Factors, And Metacontrol, Joseph B. Hellige
Psychological Science Faculty Works
Right-handed subjects indicated whether two highly discriminable uppercase letters were the same or different. Letter pairs were projected to the left visual field/right hemisphere (LVF/RH) or the right visual field/left hemisphere (RVF/LH), or the same letter pair was presented to both visual fields simultaneously (bilateral trials). Laterality effects were not influenced by moderate blurring of the letters. However, on RVF/LH trials, reaction times were faster for same pairs than for different pairs. This effect was absent on LVF/RH trials, suggesting a qualitative difference in the mode of processing for the two unilateral trial types. The pattern of results on bilateral …
Categorization Versus Distance: Hemispheric Differences For Processing Spatial Information, Joseph B. Hellige
Categorization Versus Distance: Hemispheric Differences For Processing Spatial Information, Joseph B. Hellige
Psychological Science Faculty Works
It has been hypothesized that the brain computes two different kinds of spatial-relation representations: one used to assign a spatial relation to a category and the other used to specify metric distance with precision. The present visual half-field experiment offers support for this distinction by showing that the left and right cerebral hemispheres make more effective use of the categorization and metric distance representations, respectively. Furthermore, the inclusion of a bilateral stimulus presentation condition permits the computation of a reversed association that offers additional support for the distinction between two types of spatial-relation representation.