Electrophysiological correlates of perceptual auditory priming without explicit recognition memory

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Author(s)
Harris, Jill D
Cutmore, Tim RH
O'Gorman, John
Finnigan, Simon
Shum, David HK
Griffith University Author(s)
Year published
2013
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Show full item recordAbstract
The aim of this study was to identify an event-related potential (ERP correlate) of perceptual auditory priming using a method that can dissociate it from explicit memory similar to Rugg et al. (1998). EEG was recorded during performance of an auditory word recognition test, where 17 participants discriminated "old" from "new" aural words, encoded using either a "deep" or "shallow" levels-of-processing (LOP) study task. A right-lateralized P200 effect was modulated by words' old/new status but not by accuracy of recognition or LOP manipulation. Because this effect was driven by simple repetition rather than factors known to ...
View more >The aim of this study was to identify an event-related potential (ERP correlate) of perceptual auditory priming using a method that can dissociate it from explicit memory similar to Rugg et al. (1998). EEG was recorded during performance of an auditory word recognition test, where 17 participants discriminated "old" from "new" aural words, encoded using either a "deep" or "shallow" levels-of-processing (LOP) study task. A right-lateralized P200 effect was modulated by words' old/new status but not by accuracy of recognition or LOP manipulation. Because this effect was driven by simple repetition rather than factors known to influence episodic recognition memory, a "bottom-up" perceptual priming function was inferred which was substantiated by its early temporal appearance. A similar ERP amplitude modulation was evident across a broader topographical region during the subsequent N400 time interval. Conversely the late posterior component (LPC; 500-800 ms) for deeply-encoded, correctly-recognized words was of higher amplitude than LPCs for shallowly-encoded and new words, consistent with proposals that this ERP component indexes episodic memory. To our knowledge this is the first report of an ERP correlate of auditory perceptual priming dissociated from explicit episodic memory.
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View more >The aim of this study was to identify an event-related potential (ERP correlate) of perceptual auditory priming using a method that can dissociate it from explicit memory similar to Rugg et al. (1998). EEG was recorded during performance of an auditory word recognition test, where 17 participants discriminated "old" from "new" aural words, encoded using either a "deep" or "shallow" levels-of-processing (LOP) study task. A right-lateralized P200 effect was modulated by words' old/new status but not by accuracy of recognition or LOP manipulation. Because this effect was driven by simple repetition rather than factors known to influence episodic recognition memory, a "bottom-up" perceptual priming function was inferred which was substantiated by its early temporal appearance. A similar ERP amplitude modulation was evident across a broader topographical region during the subsequent N400 time interval. Conversely the late posterior component (LPC; 500-800 ms) for deeply-encoded, correctly-recognized words was of higher amplitude than LPCs for shallowly-encoded and new words, consistent with proposals that this ERP component indexes episodic memory. To our knowledge this is the first report of an ERP correlate of auditory perceptual priming dissociated from explicit episodic memory.
View less >
Journal Title
Journal of Psychophysiology
Volume
27
Issue
4
Copyright Statement
© 2013 Hogrefe Publishing. This is an electronic version of an article published in Journal of Psychophysiology, Vol. 27(4), pp. 185-195, 2013 by Hogrefe Publishing. This article may not exactly replicate the final version published in Journal of Psychophysiology. It is not the version of record and is therefore not suitable for citation.
Subject
Neurosciences
Cognitive and computational psychology