Arousal Modulates Activity in the Medial Temporal Lobe during a Short-Term Relational Memory Task.

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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.

Jensen, JimmyOslo University Hospital & University of Oslo & Charité Universitätsmedizin, Berlin, Germany(Swepub:hkr)jenjim (author)
Sigvartsen, Niels Petter B (author)
Bolstad, Ingeborg (author)
Server, Andres (author)
Nakstad, Per H (author)
Andreassen, Ole A (author)
Endestad, Tor (author)
Oslo University Hospital & University of Oslo & Charité Universitätsmedizin, Berlin, Germany (creator_code:org_t)

By the author/editor: Thoresen, Christ ...; Jensen, Jimmy; Sigvartsen, Niel ...; Bolstad, Ingebor ...; Server, Andres; Nakstad, Per H; show more...; Andreassen, Ole ...; Endestad, Tor; show less...

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine; and Neurosciences

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