Laterality effects in the recognition of depth-rotated novel objects

Kim M. CURBY*, William G. HAYWARD, Isabel GAUTHIER

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

20 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)100-111
Number of pages12
JournalCognitive, Affective and Behavioral Neuroscience
Volume4
Issue number1
DOIs
Publication statusPublished - Mar 2004
Externally publishedYes

Bibliographical note

This study was supported by Grant CUHK4332/00H from the Research Grants Council of the Hong Kong SAR to W.G.H. and by NSF Grant 0091752 to I.G.

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