Invariance to rotation in depth measured by masked repetition priming is dependent on prime duration

Abstract The current experiment examined invariance to pictures of objects rotated in depth using event-related potentials (ERPs) and masked repetition priming. Specifically we rotated objects 30°, 60° or 150° from their canonical view and, across two experiments, varied the prime duration (50 or 90...

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Bibliographic Details
Published in:	Brain research 2011-11, Vol.1424, p.38-52
Main Authors:	Eddy, Marianna D, Holcomb, Phillip J
Format:	Article
Language:	eng
Subjects:	Behavioral psychophysiology Biological and medical sciences brain Electroencephalography Electrophysiology Event-related potential Evoked Potentials - physiology Female Fundamental and applied biological sciences. Psychology Humans Male Masked priming Neurology Object recognition Perceptual Masking - physiology Photic Stimulation Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Recognition, Psychology - physiology Repetition Priming - physiology Rotation View-point dependence View-point invariance vision Young Adult
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Summary:	Abstract The current experiment examined invariance to pictures of objects rotated in depth using event-related potentials (ERPs) and masked repetition priming. Specifically we rotated objects 30°, 60° or 150° from their canonical view and, across two experiments, varied the prime duration (50 or 90 ms). We examined three ERP components, the P/N190, N300 and N400. In Experiment 1, only the 30° rotation condition produced repetition priming effects on the N/P190, N300 and N400. The other rotation conditions only showed repetition priming effects on the early perceptual component, the N/P190. Experiment 2 extended the prime duration to 90 ms to determine whether additional exposure to the prime may produce invariance on the N300 and N400 for the 60° and 150° rotation conditions. Repetition priming effects were found for all rotation conditions across the N/P190, N300 and N400 components. We interpret these results to suggest that whether or not view invariant priming effects are found depends partly on the extent to which representation of an object has been activated.
ISSN:	0006-8993 1872-6240