Labile or stable: opposing consequences for memory when reactivated during waking and sleep.
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Labile or stable: opposing consequences for memory when reactivated during waking and sleep. / Diekelmann, Susanne; Büchel, Christian; Born, Jan; Rasch, Björn.
in: NAT NEUROSCI, Jahrgang 14, Nr. 3, 3, 2011, S. 381-386.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Labile or stable: opposing consequences for memory when reactivated during waking and sleep.
AU - Diekelmann, Susanne
AU - Büchel, Christian
AU - Born, Jan
AU - Rasch, Björn
PY - 2011
Y1 - 2011
N2 - Memory consolidation is a dynamic process. Reconsolidation theory assumes that reactivation during wakefulness transiently destabilizes memories, requiring them to reconsolidate in order to persist. Memory reactivation also occurs during slow-wave sleep (SWS) and is assumed to underlie the consolidating effect of sleep. Here, we tested whether the same principle of transient destabilization applies to memory reactivation during SWS. We reactivated memories in humans by presenting associated odor cues either during SWS or wakefulness. Reactivation was followed by an interference task to probe memory stability. As we expected, reactivation during waking destabilized memories. In contrast, reactivation during SWS immediately stabilized memories, thereby directly increasing their resistance to interference. Functional magnetic resonance imaging revealed that reactivation during SWS mainly activated hippocampal and posterior cortical regions, whereas reactivation during wakefulness primarily activated prefrontal cortical areas. Our results show that reactivation of memory serves distinct functions depending on the brain state of wakefulness or sleep.
AB - Memory consolidation is a dynamic process. Reconsolidation theory assumes that reactivation during wakefulness transiently destabilizes memories, requiring them to reconsolidate in order to persist. Memory reactivation also occurs during slow-wave sleep (SWS) and is assumed to underlie the consolidating effect of sleep. Here, we tested whether the same principle of transient destabilization applies to memory reactivation during SWS. We reactivated memories in humans by presenting associated odor cues either during SWS or wakefulness. Reactivation was followed by an interference task to probe memory stability. As we expected, reactivation during waking destabilized memories. In contrast, reactivation during SWS immediately stabilized memories, thereby directly increasing their resistance to interference. Functional magnetic resonance imaging revealed that reactivation during SWS mainly activated hippocampal and posterior cortical regions, whereas reactivation during wakefulness primarily activated prefrontal cortical areas. Our results show that reactivation of memory serves distinct functions depending on the brain state of wakefulness or sleep.
KW - Humans
KW - Magnetic Resonance Imaging
KW - Cues
KW - Memory/physiology
KW - Odors
KW - Sleep/physiology
KW - Wakefulness/physiology
KW - Humans
KW - Magnetic Resonance Imaging
KW - Cues
KW - Memory/physiology
KW - Odors
KW - Sleep/physiology
KW - Wakefulness/physiology
M3 - SCORING: Journal article
VL - 14
SP - 381
EP - 386
JO - NAT NEUROSCI
JF - NAT NEUROSCI
SN - 1097-6256
IS - 3
M1 - 3
ER -