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Long-term memory retrieval bypasses working memory

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

NeuroImage (Orlando, Fla.), 2022-11, Vol.261, p.119513-119513, Article 119513 [Periódico revisado por pares]

Amsterdam: Elsevier Inc

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  • Título:
    Long-term memory retrieval bypasses working memory
  • Autor: Liu, Baiwei ; Li, Xinyu ; Theeuwes, Jan ; Wang, Benchi
  • Assuntos: Alpha suppression ; Arrays ; EEG ; Electroencephalography ; Information processing ; Information retrieval ; Long term memory ; Memory ; Memory capacity ; Short term memory ; Working memory
  • É parte de: NeuroImage (Orlando, Fla.), 2022-11, Vol.261, p.119513-119513, Article 119513
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: •Information retrieved from LTM does not always have to be brought back into WM.•LTM retrieval can bypass WM when WM is fully engaged.•Information directly retrieved from LTM might be stored in activated LTM.•Such independent LTM retrieval is reflected by suppression in alpha oscillation. 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.
  • Editor: Amsterdam: Elsevier Inc
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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