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Memory for perceived and imagined pictures: an event-related potential study
Department of Psychology, Lund University.
School of Social Sciences, Växjö University.
Department of Psychology, Lund University.
Department of Clinical Neuroscience, Division of Clinical Neurophysiology, Lund University Hospital.
2002 (English)In: Neuropsychologia, vol. 40, no. 7, 2002, Vol. 40, no 7, p. 986-1002Conference paper, Published paper (Refereed)
Abstract [en]

Event-related potentials (ERPs) and behavioural measures were used to investigate recognition memory and source-monitoring judgements about previously perceived and imagined pictures. At study, word labels of common objects were presented. Half of these were followed by a corresponding picture and the other half by an empty frame, signalling to the participants to mentally visualise an image. At test, participants in a source-monitoring task made a three-way discrimination between new words and words corresponding to previously perceived and imagined pictures. Participants in an old/new-recognition task indicated whether test words were previously presented or not. In both tasks, correctly identified old items elicited more positive-going ERPs than correctly judged new items. This widely distributed old/new effect was found to have an earlier onset and to be of a greater magnitude for imagined than for perceived items. Task (source versus item-memory) affected the old/new effects over prefrontal areas and the reaction times to remembered old items. The present findings are consistent with the view that a greater amount, or a different type, of information is necessary for accurate source-memory judgements than for correct recognition, and moreover, that different types of source-specifying information revive at different rates. In addition, the results add weight to the view that the late widespread ERP-old/new effect is sensitive to the quality or the amount of information retrieved from memory.

Place, publisher, year, edition, pages
2002. Vol. 40, no 7, p. 986-1002
Keywords [en]
Adult, Evoked Potentials, Female, Humans, Imagination/*physiology, Male, Memory/*physiology, Recognition (Psychology), *Visual Perception
National Category
Psychology Social Sciences
Identifiers
URN: urn:nbn:se:hkr:diva-646DOI: 10.1016/S0028-3932(01)00148-8ISI: 000174826900031PubMedID: 11900751OAI: oai:DiVA.org:hkr-646DiVA, id: diva2:208832
Note
27th International Congress of Psychology, STOCKHOLM, SWEDEN, JUL, 2000Available from: 2009-03-20 Created: 2009-03-20 Last updated: 2009-03-20Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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