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Pre-retrieval event-related potentials predict source memory during task switching

Evans, Lisa and Herron, Jane 2019. Pre-retrieval event-related potentials predict source memory during task switching. NeuroImage 194 , pp. 174-181. 10.1016/j.neuroimage.2019.03.038

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Abstract

Neural activity preceding memory probes differs according to retrieval goals. These divergences have been linked to retrieval orientations, which are content-specific memory states that bias retrieval towards specific contents. Here, participants were cued to retrieve either spatial location or encoding operations. On the first trial of each memory task (‘switch’ trials), preparatory ERPs preceding correct source memory judgments differed according to retrieval goal, but this effect was absent preceding memory errors. Initiating appropriate retrieval orientations therefore predicted criterial recollection. Preparatory ERPs on the second trial of each memory task (i.e. ‘stay’ trials) also differed according to retrieval goal, but the polarity of this effect was reversed from that observed on switch trials and the effect did not predict memory accuracy. This was interpreted as a correlate of retrieval orientation maintenance, with initiation and maintenance forming dissociable components of these goal-directed memory states. More generally, these findings highlight the importance of pre-retrieval processes in episodic memory.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Cardiff University Brain Research Imaging Centre (CUBRIC)
Publisher: Elsevier
ISSN: 1053-8119
Date of First Compliant Deposit: 19 March 2019
Date of Acceptance: 18 March 2019
Last Modified: 17 Apr 2019 12:26
URI: http://orca.cf.ac.uk/id/eprint/120888

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