Efficiency of selecting and excluding visual working memory representations depends on the stage of selection

[Speaker] Tsubomi, Hiroyuki:1
1:University of Toyama (Japan)

The severe capacity limit of visual working memory (VWM) necessitates an efficient filtering mechanism to represent task-relevant items in VWM and restrict task-irrelevant items from consuming capacity. Previous studies have shown that selective attention benefits for pre- and post-perceptual processing by filtering unnecessary items out of VWM. Here, we examined whether the attentional filtering is supported by the same mechanism during various stages of VWM processing such as encoding and retention. Using behavioral and EEG approaches, we found that selective attention benefits behavioral performance at both the encoding and retention stages in VWM. The underlying mechanisms for these attentional benefits, however, are dissociable: while attentional selection at the encoding stage accompanies excluding unnecessary items from VWM, attentional selection at the retention stage does not accompany excluding the no-longer necessary items from VWM.
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