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

@article{citeulike:675323, 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 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.}, address = {Department of Psychology, Lund University, P.O. Box 213, SE-22100 Lund, Sweden. mikael.johansson@psychology.lu.se}, author = {Johansson, M. and Stenberg, G. and Lindgren, M. and Ros\'{e}n, I.}, citeulike-article-id = {675323}, citeulike-linkout-0 = {http://view.ncbi.nlm.nih.gov/pubmed/11900751}, citeulike-linkout-1 = {http://www.hubmed.org/display.cgi?uids=11900751}, issn = {0028-3932}, journal = {Neuropsychologia}, keywords = {erp, imagined, memory, perceived, source}, number = {7}, pages = {986--1002}, posted-at = {2006-05-30 19:40:51}, priority = {0}, title = {Memory for perceived and imagined pictures--an event-related potential study.}, url = {http://view.ncbi.nlm.nih.gov/pubmed/11900751}, volume = {40}, year = {2002} }

TY - JOUR ID - citeulike:675323 L3 - citeulike-article-id:675323 N2 - 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. IS - 7 JF - Neuropsychologia SN - 0028-3932 AD - Department of Psychology, Lund University, P.O. Box 213, SE-22100 Lund, Sweden. mikael.johansson@psychology.lu.se EP - 1002 TI - Memory for perceived and imagined pictures--an event-related potential study. VL - 40 SP - 986 KW - erp KW - imagined KW - memory KW - perceived KW - source AU - Johansson, M AU - Stenberg, G AU - Lindgren, M AU - Rosén, I PY - 2002/// UR - http://view.ncbi.nlm.nih.gov/pubmed/11900751 ER -