Probability effects on event-related potential correlates of recognition memory

Herron, Jane ORCID: https://orcid.org/0000-0002-2443-0713, Quayle, A. H. and Rugg, M. D. 2003. Probability effects on event-related potential correlates of recognition memory. Cognitive Brain Research 16 (1) , pp. 66-73. 10.1016/S0926-6410(02)00220-3

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Abstract

A common finding in event-related potential (ERP) studies of recognition memory is that recognised items elicit greater positivity at parietal electrode sites than new items (the ‘left parietal old/new effect’). Parietal positivity (the P300 or P3b) is also elicited in detection tasks with no memory demands by items of low probability of occurrence and high ‘target value’. It has been argued that correctly recognised items are typically associated with lower probability and higher target value than new items, raising the question of the extent to which the old/new effect receives a contribution from, or interacts with, P300 activity. The present study explored this issue by comparing ERPs associated with correctly classified old and new items across three different ratios of old to new items: 25:75, 50:50 and 75:25. The left parietal old/new effect was not influenced by this manipulation in the latency range in which it is conventionally measured. Probability did influence the parietal ERPs to correctly recognised items post-800 ms; the scalp distribution of this probability effect was however qualitatively distinct from that of the preceding old/new effect. The left parietal old/new effect appears to be a relatively pure reflection of episodic retrieval, uncontaminated by the non-mnemonic factors of probability and target value.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Psychology
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Uncontrolled Keywords:	Neural basis of behavior; Cognition; Recognition memory; Event-related potential; Probability; Targetness; Left parietal old/new effect; P3b
Publisher:	Elsevier
ISSN:	0926-6410
Last Modified:	25 Oct 2022 08:17
URI:	https://orca.cardiff.ac.uk/id/eprint/52203

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