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Arousal Modulates Activity in the Medial Temporal Lobe during a Short-Term Relational Memory Task.
Oslo University Hospital & University of Oslo & Charité Universitätsmedizin, Berlin, Germany.ORCID iD: 0000-0001-6841-1808
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2011 (English)In: Frontiers in human neuroscience, ISSN 1662-5161, Vol. 5, 177- p.Article in journal (Refereed) Published
Abstract [en]

This study investigated the effect of arousal on short-term relational memory and its underlying cortical network. Seventeen healthy participants performed a picture by location, short-term relational memory task using emotional pictures. Functional magnetic resonance imaging was used to measure the blood-oxygenation-level dependent signal relative to task. Subjects' own ratings of the pictures were used to obtain subjective arousal ratings. Subjective arousal was found to have a dose-dependent effect on activations in the prefrontal cortex, amygdala, hippocampus, and in higher order visual areas. Serial position analyses showed that high arousal trials produced a stronger primacy and recency effect than low arousal trials. The results indicate that short-term relational memory may be facilitated by arousal and that this may be modulated by a dose-response function in arousal-driven neuronal regions.

Place, publisher, year, edition, pages
2011. Vol. 5, 177- p.
National Category
Neurosciences
Identifiers
URN: urn:nbn:se:hkr:diva-12348DOI: 10.3389/fnhum.2011.00177ISI: 000299561700001PubMedID: 22291626OAI: oai:DiVA.org:hkr-12348DiVA: diva2:732650
Available from: 2014-07-04 Created: 2014-07-04 Last updated: 2014-07-22Bibliographically approved

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