Neurophysiological indices of perceptual object priming in the absence of explicit recognition memory

Harris, Jill D., Cutmore, Tim R. H., O'Gorman, John, Finnigan, Simon and Shum, David (2009) Neurophysiological indices of perceptual object priming in the absence of explicit recognition memory. International Journal of Psychophysiology, 71 2: 132-141. doi:10.1016/j.ijpsycho.2008.08.005


Author Harris, Jill D.
Cutmore, Tim R. H.
O'Gorman, John
Finnigan, Simon
Shum, David
Title Neurophysiological indices of perceptual object priming in the absence of explicit recognition memory
Journal name International Journal of Psychophysiology   Check publisher's open access policy
ISSN 0167-8760
1872-7697
Publication date 2009-02
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.ijpsycho.2008.08.005
Volume 71
Issue 2
Start page 132
End page 141
Total pages 10
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Abstract The aim of this study was to identify ERP correlates of perceptual object priming that are insensitive to factors affecting explicit, episodic memory. EEG was recorded from 21 participants while they performed a visual object recognition test on a combination of unstudied items and old items that were previously encountered during either a ‘deep’ or ‘shallow’ levels-of-processing (LOP) study task. The results demonstrated a midline P150 old/new effect which was sensitive only to objects’ old/new status and not to the accuracy of recognition responses to old items, or to the LOP manipulation. Similar outcomes were observed for the subsequent P200 and N400 effects, the former of which had a parietal scalp maximum and the latter, a broadly distributed topography. In addition an LPC old/new effect typical of those reported in past ERP recognition studies was observed. These outcomes support the proposal that the P150 effect is reflective of perceptual object priming and moreover, provide novel evidence that this and the P200 effect are independent of explicit recognition memory process(es).
Keyword Event-related potentials
Priming
Object recognition
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Available online 2 September 2008

Document type: Journal Article
Sub-type: Article (original research)
Collection: Centre for Advanced Imaging Publications
 
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Created: Thu, 03 Sep 2009, 08:41:17 EST by Mr Andrew Martlew on behalf of Centre for Advanced Imaging