Long-term memory retrieval bypasses working memory.

Liu, Baiwei; Li, Xinyu; Theeuwes, Jan; Wang, Benchi

Liu, Baiwei; Li, Xinyu; Theeuwes, Jan; Wang, Benchi.

Afiliación

Liu B; Department of Psychology, Zhejiang Normal University, Jinhua, China; Department of Experimental and Applied Psychology, Vrije Universiteit, Amsterdam, the Netherlands. Electronic address: b.liu@vu.nl.
Li X; Department of Psychology, Zhejiang Normal University, Jinhua, China.
Theeuwes J; Department of Experimental and Applied Psychology, Vrije Universiteit, Amsterdam, the Netherlands.
Wang B; Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, China; Institute for Brain Research and Rehabilitation, South China Normal University, China; Center for Studies of Psychological Application, South China Normal University, China; Guang

Neuroimage ; 261: 119513, 2022 11 01.

Article en En | MEDLINE | ID: mdl-35882271

RESUMEN

For decades, it has been assumed that when humans retrieve information from long-term memory (LTM), information need first to be brought back into working memory (WM). However, as WM capacity is limited, it is unclear what happens if information from LTM needs to be retrieved while WM is fully engaged? To address this question, observers had to retrieve colors from LTM while WM storage capacity was fully engaged. The behavioral results showed that retrieving information from LTM is possible even when WM capacity is fully occupied. Additional evidence from electroencephalogram (EEG) confirmed that WM was fully engaged as the suppression of alpha oscillation reached its maximum when memorizing the maximum amount of information into WM; yet the suppression in alpha oscillation was even further amplified when items were retrieved simultaneously from LTM, providing a neural signature of additional LTM retrieval capacity above and beyond the maximum WM capacity. Together, our findings indicate that information retrieved from LTM does not always have to be brought back into WM, but instead might be accessed through a different mechanism when WM is fully engaged.

Asunto(s)

Memoria a Largo Plazo; Memoria a Corto Plazo; Electroencefalografía; Humanos

Palabras clave

Alpha suppression; Long-term memory; Memory capacity; Working memory

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Memoria a Largo Plazo / Memoria a Corto Plazo Límite: Humans Idioma: En Revista: Neuroimage Asunto de la revista: DIAGNOSTICO POR IMAGEM Año: 2022 Tipo del documento: Article Pais de publicación: Estados Unidos

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