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Oscillatory Correlates of Retrieval-induced Forgetting in Recognition Memory

Spitzer, B, Hanslmayr, S, Opitz, B, Mecklinger, A and Baeuml, K-H (2009) Oscillatory Correlates of Retrieval-induced Forgetting in Recognition Memory Journal of Cognitive Neuroscience, 21 (5). pp. 976-990.

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Retrieval practice on a subset of previously studied material enhances later memory for practiced material but can inhibit memory for related unpracticed material. The present study examines the effects of prior retrieval practice on evoked (ERPs) and induced (oscillatory power) measures of electrophysiological activity underlying recognition of practiced and unpracticed words. Compared to control material, recognition of unpracticed words was characterized by reduced amplitudes of the P2 ERP component and by reduced early (200–400 msec) oscillatory theta power. The reduction in P2 amplitude was associated with decreased evoked theta power but not with decreased theta phase locking (phase-locking index). Recognition of unpracticed material was further accompanied by a reduction in occipital gamma power (>250 msec). In contrast, the beneficial effects of retrieval practice on practiced words were reflected by larger parietal ERP positivity (>500 msec) and by a stronger decrease in oscillatory alpha power in a relatively late time window (>700 msec). The results suggest that the beneficial and detrimental effects of retrieval practice are mediated by different processes. In particular, they suggest that reduced theta (4–7 Hz) and gamma (60–90 Hz) power reflect the specific effects of inhibitory processes on the unpracticed material's memory representation.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Psychology
Authors :
Date : 8 April 2009
Identification Number : 10.1162/jocn.2009.21072
Uncontrolled Keywords : Science & Technology, Social Sciences, Life Sciences & Biomedicine, Neurosciences, Psychology, Experimental, Neurosciences & Neurology, Psychology, GAMMA-BAND, LANGUAGE COMPREHENSION, ITEM RECOGNITION, EPISODIC MEMORY, EXPLICIT MEMORY, SEMANTIC MEMORY, PHASE RESET, THETA-BAND, EEG, FAMILIARITY
Related URLs :
Additional Information : This is an electronic version of an article published as Spitzer B, Hanslmayr S, Opitz B, Mecklinger A, Baeuml K-H (2009). Oscillatory Correlates of Retrieval-induced Forgetting in Recognition Memory. Journal of Cognitive Neuroscience 21(5):976-990 Available online at:
Depositing User : Symplectic Elements
Date Deposited : 06 Jun 2013 15:12
Last Modified : 23 Sep 2013 19:51

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