Spatial Attention in Serial Order Working Memory: An EEG Study

被引:18
|
作者
Rasoulzadeh, Vesal [1 ]
Sahan, Muhammet Ikbal [1 ]
van Dijck, Jean-Philippe [1 ,2 ]
Abrahamse, Elger [3 ]
Marzecova, Anna [1 ]
Verguts, Tom [1 ]
Fias, Wim [1 ]
机构
[1] Univ Ghent, Dept Expt Psychol, B-9000 Ghent, Belgium
[2] Thomas More Univ Coll, Dept Appl Psychol, B-2018 Antwerp, Belgium
[3] Tilburg Univ, Dept Commun & Cognit, NL-5000 LE Tilburg, Netherlands
关键词
ADAN; alpha oscillations; EDAN; spatial attention; verbal working memory; SHORT-TERM-MEMORY; MECHANISMS; MODEL; INFORMATION; DYNAMICS; ERP; OSCILLATIONS; LOCATIONS; COMPONENT; PARIETAL;
D O I
10.1093/cercor/bhaa368
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Theoretical models explaining serial order processing link order information to specified position markers. However, the precise characteristics of position marking have remained largely elusive. Recent studies have shown that space is involved in marking serial position of items in verbal working memory (WM). Furthermore, it has been suggested, but not proven, that accessing these items involves horizontal shifts of spatial attention. We used continuous electroencephalography recordings to show that memory search in serial order verbal WM involves spatial attention processes that share the same electrophysiological signatures as those operating on the visuospatial WM and external space. Accessing an item from a sequence in verbal WM induced posterior "early directing attention negativity" and "anterior directing attention negativity" contralateral to the position of the item in mental space (i.e., begin items on the left; end items on the right). In the frequency domain, we observed posterior alpha suppression contralateral to the position of the item. Our results provide clear evidence for the involvement of spatial attention in retrieving serial information from verbal WM. Implications for WM models are discussed.
引用
收藏
页码:2482 / 2493
页数:12
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