Neural Correlates of Visual Short-term Memory Dissociate between Fragile and Working Memory Representations

Journal of Cognitive Neuroscience
Annelinde R E VandenbrouckeVictor A F Lamme

Abstract

Evidence is accumulating that the classic two-stage model of visual STM (VSTM), comprising iconic memory (IM) and visual working memory (WM), is incomplete. A third memory stage, termed fragile VSTM (FM), seems to exist in between IM and WM [Vandenbroucke, A. R. E., Sligte, I. G., & Lamme, V. A. F. Manipulations of attention dissociate fragile visual STM from visual working memory. Neuropsychologia, 49, 1559-1568, 2011; Sligte, I. G., Scholte, H. S., & Lamme, V. A. F. Are there multiple visual STM stores? PLoS One, 3, e1699, 2008]. Although FM can be distinguished from IM using behavioral and fMRI methods, the question remains whether FM is a weak expression of WM or a separate form of memory with its own neural signature. Here, we tested whether FM and WM in humans are supported by dissociable time-frequency features of EEG recordings. Participants performed a partial-report change detection task, from which individual differences in FM and WM capacity were estimated. These individual FM and WM capacities were correlated with time-frequency characteristics of the EEG signal before and during encoding and maintenance of the memory display. FM capacity showed negative alpha correlations over peri-occipital electrodes, whereas WM...Continue Reading

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Citations

Oct 25, 2016·Scientific Reports·Chaoxiong YeQiang Liu
Sep 8, 2018·Journal of Vision·Tal Yatziv, Yoav Kessler
Apr 22, 2016·Attention, Perception & Psychophysics·Alessandra S Souza, Klaus Oberauer
Feb 28, 2020·Journal of Vision·Sven Ohl, Martin Rolfs
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Jun 10, 2020·Psychonomic Bulletin & Review·Harun YörükBenjamin J Tamber-Rosenau
Oct 17, 2019·Frontiers in Psychology·Luca SimioneAntonino Raffone

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