Judging the reflection of misoriented patterns in the right and left visual fields.
The reported study demonstrates that performance asymmetries between normal or reflected letters presented in the right and left visual field favors the right visual field when stimulus patterns are blocked and rotated 90 degrees clockwise and favors the left visual field when they are blocked and rotated 90 degrees counterclockwise. When stimuli are rotated, the orientations of the patterns define a coordinate system that is independent of upright. It is suggested that our results are due to subjects sampling the different areas in the visual field relative to this coordinate system. The right visual field was given priority when the patterns were oriented so their "tops" were pointing rightward and the left visual field was given priority when the patterns were oriented so their tops were pointing leftward. Neither differences in the stimulus image on the retina in the two rotated conditions, eye movements, nor direct access to one hemisphere or the other could account for these effects.
Robertson
L C
LC
Veterans Administration Medical Center, Martinez, CA 94553.
Lamb
M R
MR
D000328:Adult; D001288:Attention; D004292:Dominance, Cerebral; D005260:Female; D005556:Form Perception; D006801:Humans; D007092:Imagination; D008297:Male; D008568:Memory; D011939:Mental Recall; D009949:Orientation; D010364:Pattern Recognition, Visual; D012016:Reference Values