Visual image retention does not contribute to modulation of event-related potentials by mental rotation |
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| Authors: | Igor Riečanský ,Livia Tomova,Stanislav Katina,Herbert Bauer,Florian Ph.S. Fischmeister,Claus Lamm |
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| Affiliation: | 1. Social, Cognitive and Affective Neuroscience Unit, Department of Basic Psychological Research and Research Methods, Faculty of Psychology, University of Vienna, Liebiggasse 5, A-1010 Vienna, Austria;2. Institute of Normal and Pathological Physiology, CE NOREG, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71 Bratislava, Slovakia;3. Study Group Clinical fMRI, Department of Neurology, Medical University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria;4. School of Mathematics and Statistics, The University of Glasgow, University Gardens, G12 8QW Glasgow, Scotland, United Kingdom |
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| Abstract: | Rotation of a visual image in mind is associated with a slow posterior negative deflection of the event-related potential (ERP), termed rotation-related negativity (RRN). Retention of a visual image in short-term memory is also associated with a slow posterior negative ERP, termed negative slow wave (NSW). We tested whether short-term memory retention, indexed by the NSW, contributes to the RRN. ERPs were recorded in the same subjects in two tasks, a mental rotation task, eliciting the RRN, and a visual short-term memory task, eliciting the NSW. Over both right and left parietal scalp, no association was found between the NSW and the RRN amplitudes. Furthermore, adjusting for the effect of the NSW had no influence on a significant association between the RRN amplitude and response time, an index of mental rotation performance. Our data indicate that the RRN reflects manipulation of a visual image but not its retention in short-term memory. |
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| Keywords: | Event related potentials Rotation related negativity Working memory Spatial cognition Visual imagery Individual differences |
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