Behavioral and electrophysiological evidence for the flexible recruitment of feature- and object-based processing in visual working memory comparison

被引：2

作者：

Saltzmann, Stephanie M. ^{[1
]}

Moen, Katherine C. ^{[1
,2
]}

Eich, Brandon ^{[1
]}

Chaisson, Felicia M. ^{[1
]}

Fan, Gaojie ^{[1
]}

Goldstein, Rebecca R. ^{[1
,4
]}

Beck, Melissa R. ^{[1
,3
]}

Lucas, Heather D. ^{[1
]}

机构：

[1] Louisiana State Univ, 236 Audubon Hall, Baton Rouge, LA 70803 USA

[2] Univ Nebraska, 2504 9th Ave, Kearney, NE 68849 USA

[3] Louisiana State Univ, Dept Psychol, 236 Audubon Hall, Baton Rouge, LA 70803 USA

[4] US Naval Res Lab Stennis, John C Stennis Space Ctr, 1005 Balch Blvd, Bay St Louis, MS 39529 USA

来源：

BIOLOGICAL PSYCHOLOGY | 2023年 / 178卷

关键词：

Visual working memory; Feature; -processing; EEG; N200; Feature repetition; CHANGE BLINDNESS; COMPONENT; INFORMATION; STORAGE; P300; ERP; REPRESENTATIONS; MAINTENANCE; MISMATCH;

D O I：

10.1016/j.biopsycho.2023.108528

中图分类号：

B84 [心理学];

学科分类号：

04 ; 0402 ;

摘要：

Previous research is inconclusive on when visual working memory (VWM) can be object-based or feature-based. Prior event-related potential (ERP) studies using change detection tasks have found that amplitudes of the N200-an ERP index of VWM comparison- are sensitive to changes in both relevant and irrelevant features, suggesting a bias toward object-based processing. To test whether VWM comparison processing can operate in feature-based manner, we aimed to create circumstances that would support feature-based processing by: using a strong task-relevance manipulation, and 2) repeating features within a display. Participants completed two blocks of a change detection task for four-item displays in which they were told to respond to color changes (task relevant) but not shape changes (task irrelevant). The first block contained only task-relevant changes create a strong task-relevance manipulation. In the second block, both relevant and irrelevant changes were present. In both blocks, half of the arrays contained within-display feature repetitions (e.g. two items of the same color or shape). We found that during the second block, N200 amplitudes were sensitive to task-relevant but not irrelevant features regardless of repetition status, consistent with feature-based processing. However, analyses behavioral data and N200 latencies suggested that object-based processing was occurring at some stages of VWM processing on task-irrelevant feature change trials. In particular, task-irrelevant changes may be processed after no task-relevant feature change is revealed. Overall, the results from the current study suggest that the VWM processing is flexible and can be either object-or feature-based.

引用

页数：13

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