Repetition and brain potentials when recognizing natural scenes: task and emotion differences

Repetition has long been known to facilitate memory performance, but its effects on event-related potentials (ERPs), measured as an index of recognition memory, are less well characterized. In Experiment 1, effects of both massed and distributed repetition on old-new ERPs were assessed during an imm...

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Veröffentlicht in:Social cognitive and affective neuroscience 2013-12, Vol.8 (8), p.847-854
Hauptverfasser: Ferrari, Vera, Bradley, Margaret M, Codispoti, Maurizio, Karlsson, Marie, Lang, Peter J
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container_issue 8
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container_title Social cognitive and affective neuroscience
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creator Ferrari, Vera
Bradley, Margaret M
Codispoti, Maurizio
Karlsson, Marie
Lang, Peter J
description Repetition has long been known to facilitate memory performance, but its effects on event-related potentials (ERPs), measured as an index of recognition memory, are less well characterized. In Experiment 1, effects of both massed and distributed repetition on old-new ERPs were assessed during an immediate recognition test that followed incidental encoding of natural scenes that also varied in emotionality. Distributed repetition at encoding enhanced both memory performance and the amplitude of an old-new ERP difference over centro-parietal sensors. To assess whether these repetition effects reflect encoding or retrieval differences, the recognition task was replaced with passive viewing of old and new pictures in Experiment 2. In the absence of an explicit recognition task, ERPs were completely unaffected by repetition at encoding, and only emotional pictures prompted a modestly enhanced old-new difference. Taken together, the data suggest that repetition facilitates retrieval processes and that, in the absence of an explicit recognition task, differences in old-new ERPs are only apparent for affective cues.
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subjects Adolescent
Brain - physiology
Electroencephalography - methods
Emotions - physiology
Evoked Potentials - physiology
Female
Humans
Image Processing, Computer-Assisted - methods
Male
Memory - physiology
Original
Recognition, Psychology - physiology
Task Performance and Analysis
Young Adult
title Repetition and brain potentials when recognizing natural scenes: task and emotion differences
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