Controlling the Flow of Distracting Information in Working Memory
| Autor: | Edward K. Vogel, Tobias Feldmann-Wüstefeld, Edward Awh, Nicole Hakim |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male Adolescent Eye Movements Computer science Cognitive Neuroscience Electroencephalography Affect (psychology) Young Adult Cellular and Molecular Neuroscience Distraction Reaction Time medicine Humans Attention medicine.diagnostic_test Working memory Attentional control Memory Short-Term Visual Perception Original Article Female Relevant information Alpha power N2pc Photic Stimulation Psychomotor Performance Cognitive psychology |
| Zdroj: | Cereb Cortex |
| ISSN: | 1460-2199 1047-3211 |
| Popis: | Visual working memory (WM) must maintain relevant information, despite the constant influx of both relevant and irrelevant information. Attentional control mechanisms help determine which of this new information gets access to our capacity-limited WM system. Previous work has treated attentional control as a monolithic process—either distractors capture attention or they are suppressed. Here, we provide evidence that attentional capture may instead be broken down into at least two distinct subcomponent processes: (1) Spatial capture, which refers to when spatial attention shifts towards the location of irrelevant stimuli and (2) item-based capture, which refers to when item-based WM representations of irrelevant stimuli are formed. To dissociate these two subcomponent processes of attentional capture, we utilized a series of electroencephalography components that track WM maintenance (contralateral delay activity), suppression (distractor positivity), item individuation (N2pc), and spatial attention (lateralized alpha power). We show that new, relevant information (i.e., a task-relevant distractor) triggers both spatial and item-based capture. Irrelevant distractors, however, only trigger spatial capture from which ongoing WM representations can recover more easily. This fractionation of attentional capture into distinct subcomponent processes provides a refined framework for understanding how distracting stimuli affect attention and WM. |
| Databáze: | OpenAIRE |
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