Memory for perceived and imagined pictures--an event-related potential study

Neuropsychologia
Mikael JohanssonIngmar Rosén

Abstract

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 recog...Continue Reading

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Citations

Jan 23, 2004·Brain Research. Cognitive Brain Research·E L Wilding, H Sharpe
Jun 1, 2005·Brain Research. Cognitive Brain Research·E L WildingJ E Herron
Dec 26, 2002·Scandinavian Journal of Psychology·Mikael Johansson, Georg Stenberg
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Jun 20, 2008·Journal of Cognitive Neuroscience·Georg StenbergIngmar Rosén
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Nov 13, 2004·Cognitive, Affective & Behavioral Neuroscience·Juan LiMichael D Rugg
Apr 10, 2012·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·P Andrew Leynes
Jul 19, 2011·Neuropsychologia·Timm RosburgMikael Johansson
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Nov 4, 2010·NeuroImage·Timm RosburgMikael Johansson
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May 10, 2017·Cognitive, Affective & Behavioral Neuroscience·Jane E Herron

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