Laterality effects in the recognition of depth-rotated novel objects |
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Authors: | Email author" target="_blank">Kim?M?CurbyEmail author William?G?Hayward Isabel?Gauthier |
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Institution: | Department of Psychology, Vanderbilt University, Nashville, Tennessee 37203, USA. kim.curby@vanderbilt.edu |
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Abstract: | The dissociable neural subsystems theory proposes that left-hemisphere (LH) performance is dominated by a viewpoint-invariant
(VI) recognition subsystem, whereas right-hemisphere (RH) performance is dominated by a viewpoint-dependent (VD) subsystem
(Marsolek, 1999). Studies supporting this theory have used familiar objects and, therefore, may have been confounded by characteristics
beyond perceptual features. Experiment 1, a lateralized sequential-matching task with novel objects, showed VD recognition
in both hemispheres. In Experiment 2, some participants learned semantic associations for four novel objects, whereas others
were exposed to the novel objects without the semantic associations. Both groups later performed a depth-rotated lateralized
sequential-matching task. The participants who had learned semantic associations showed greater VD performance in the RH than
in the LH; however, the participants in the control group showed equivalent VD performance in both hemispheres. The results
suggest that hemispheric differences in VD performance may be partially attributable to an LH advantage for semantic processing. |
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