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Journal of Cognitive Neuroscience

November 2004, Vol. 16, No. 9, Pages 1576-1582
(doi: 10.1162/0898929042568604)
© 2004 Massachusetts Institute of Technology
The Role of High Spatial Frequencies in Hemispheric Processing of Categorical and Coordinate Spatial Relations
Article PDF (238.44 KB)

Right-handed participants performed categorical and coordinate spatial relation tasks on stimuli presented either to the left visual field-right hemisphere (LVF-RH) or to the right visual field-left hemisphere (RVF-LH). The stimuli were either unfiltered or low-pass filtered (i.e., devoid of high spatial frequency content). Consistent with previous studies, the unfiltered condition produced a significant RVF-LH advantage for the categorical task and an LVF-RH advantage for the coordinate task. Low-pass filtering eliminated this Task × Visual Field interaction; thus, the RVF-LH advantage disappeared for the categorical task. The present results suggest that processing of high spatial frequency contributes to the left hemispheric advantage for categorical spatial processing.