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ERIC Number: EJ729841
Record Type: Journal
Publication Date: 2006-Feb
Pages: 10
Abstractor: Author
ISBN: N/A
ISSN: ISSN-0278-2626
EISSN: N/A
The Visual Basis of Category Effects in Object Identification: Evidence from the Visual Hemifield Paradigm
Lag, Torstein; Hveem, Kari; Ruud, Kristin P. E.; Laeng, Bruno
Brain and Cognition, v60 n1 p1-10 Feb 2006
The basis for the category specific living things advantage in object recognition (i.e., faster and more accurate identification of living compared to nonliving things) was investigated in two experiments. It was hypothesised that the global shape of living things on average provides more information about their basic level identity than the global shape of nonliving things. In two experiments subjects performed name-picture or picture-name verification tasks, in which blurred or clear images of living and nonliving things were presented in either the right or the left visual hemifield. With blurred images, recognition performance was worst for nonliving things presented to the right visual field/left hemisphere, indicating that the lack of visual detail in the stimulus combined with a left hemisphere bias toward processing high frequency visual elements proved detrimental for processing nonliving stimuli in this condition. In addition, an overall living things advantage was observed in both experiments. This advantage was considerably larger with blurred images than with clear. These results are compatible with the global shape hypothesis and converge with evidence using other paradigms.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A