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Exploring the effect of sleep and reduced interference on different forms of declarative memory.
Schönauer, Monika; Pawlizki, Annedore; Köck, Corinna; Gais, Steffen.
Afiliación
  • Schönauer M; Bernstein Center for Computational Neuroscience, Martinsried-Planegg, Germany: General and Experimental Psychology, Department of Psychology, Ludwig-Maximilians-Universität München, Munich, Germany.
  • Pawlizki A; General and Experimental Psychology, Department of Psychology, Ludwig-Maximilians-Universität München, Munich, Germany.
  • Köck C; General and Experimental Psychology, Department of Psychology, Ludwig-Maximilians-Universität München, Munich, Germany.
  • Gais S; General and Experimental Psychology, Department of Psychology, Ludwig-Maximilians-Universität München, Munich, Germany: Medical Psychology and Behavioral Neurobiology, Eberhard Karls Universität Tübingen, Tübingen, Germany.
Sleep ; 37(12): 1995-2007, 2014 Dec 01.
Article en En | MEDLINE | ID: mdl-25325490
STUDY OBJECTIVES: Many studies have found that sleep benefits declarative memory consolidation. However, fundamental questions on the specifics of this effect remain topics of discussion. It is not clear which forms of memory are affected by sleep and whether this beneficial effect is partly mediated by passive protection against interference. Moreover, a putative correlation between the structure of sleep and its memory-enhancing effects is still being discussed. DESIGN: In three experiments, we tested whether sleep differentially affects various forms of declarative memory. We varied verbal content (verbal/nonverbal), item type (single/associate), and recall mode (recall/recognition, cued/free recall) to examine the effect of sleep on specific memory subtypes. We compared within-subject differences in memory consolidation between intervals including sleep, active wakefulness, or quiet meditation, which reduced external as well as internal interference and rehearsal. PARTICIPANTS: Forty healthy adults aged 18-30 y, and 17 healthy adults aged 24-55 y with extensive meditation experience participated in the experiments. RESULTS: All types of memory were enhanced by sleep if the sample size provided sufficient statistical power. Smaller sample sizes showed an effect of sleep if a combined measure of different declarative memory scales was used. In a condition with reduced external and internal interference, performance was equal to one with high interference. Here, memory consolidation was significantly lower than in a sleep condition. We found no correlation between sleep structure and memory consolidation. CONCLUSIONS: Sleep does not preferentially consolidate a specific kind of declarative memory, but consistently promotes overall declarative memory formation. This effect is not mediated by reduced interference.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Sueño / Memoria Límite: Adolescent / Adult / Female / Humans / Male / Middle aged Idioma: En Revista: Sleep Año: 2014 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Sueño / Memoria Límite: Adolescent / Adult / Female / Humans / Male / Middle aged Idioma: En Revista: Sleep Año: 2014 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Estados Unidos