Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/7330
Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Event-related potential studies of associative recognition and recall: electrophysiological evidence for context dependent retrieval processes
Authors: Donaldson, David
Rugg, Michael D
Contact Email: d.i.donaldson@stir.ac.uk
Keywords: ERPs
associative recognition
associative recall
frontal lobe
recollection
context
Issue Date: May-1999
Publisher: Elsevier
Citation: Donaldson D & Rugg MD (1999) Event-related potential studies of associative recognition and recall: electrophysiological evidence for context dependent retrieval processes, Cognitive Brain Research, 8 (1), pp. 1-16.
Abstract: To investigate the neural correlates of episodic recollection the ERP correlates of memory for new associations (recently studied novel word pairs) were investigated using two tasks, associative recognition and associative recall. For the recognition task subjects discriminated old from new word pairs and, for pairs judged old, reported whether the pairs were intact or recombined (compared to at study). For the recall task, subjects discriminated old from new words and, for each word judged old, reported its study associate. ERPs were recorded at test from 25 scalp electrodes, with a 1944-ms recording epoch. In Experiment 1, the tasks were randomly interleaved. Consistent with previous findings, relative to the ERPs for correctly classified new items, the ERP correlates of successful associative recognition consisted of a sustained left parietal positivity, and two frontal positivities, one early and bilateral, the other occurring later and showing a right-sided maximum. In contrast to previous findings, successful associative recall elicited similar effects to those found for recognition. Topographic analyses revealed that the distribution of these retrieval-related ERP effects were similar across the two tasks, suggesting that the recognition and recall of associative information gives rise to activity in overlapping, if not the same, neural populations. In Experiment 2 the tasks were blocked. In contrast to the findings of Experiment 1, successful associative recall elicited left parietal and late onsetting right frontal positivities, in the absence of the early bilateral frontal positivity. This finding suggests that frontally-distributed memory-related ERP effects are both neurally and functionally dissociable. Specifically, we argue that the functional significance of the early frontally distributed ERP effect cannot be accounted for by the 'post-retrieval processing' hypothesis that is taken to account for the late right frontal effect, suggesting that episodic recollection itself is neither neurally nor functionally homogenous.
Type: Journal Article
URI: http://hdl.handle.net/1893/7330
DOI Link: http://dx.doi.org/10.1016/S0926-6410(98)00051-2
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Psychology
University of St Andrews

Files in This Item:
File Description SizeFormat 
donaldson_cognitivebrainresearch_1999.pdf717.45 kBAdobe PDFUnder Embargo until 31/12/2999     Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependant on the depositor still being contactable at their original email address.

This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.