Attentional guidance by relative features: behavioral and electrophysiological evidence

Schonhammer, Josef G., Grubert, Anna, Kerzel, Dirk and Becker, Stefanie I. (2016) Attentional guidance by relative features: behavioral and electrophysiological evidence. Psychophysiology, 53 7: 1074-1083. doi:10.1111/psyp.12645


Author Schonhammer, Josef G.
Grubert, Anna
Kerzel, Dirk
Becker, Stefanie I.
Title Attentional guidance by relative features: behavioral and electrophysiological evidence
Journal name Psychophysiology   Check publisher's open access policy
ISSN 1469-8986
0048-5772
Publication date 2016-07
Year available 2016
Sub-type Article (original research)
DOI 10.1111/psyp.12645
Open Access Status Not Open Access
Volume 53
Issue 7
Start page 1074
End page 1083
Total pages 10
Place of publication Hoboken, NJ, United States
Publisher Wiley-Blackwell Publishing
Collection year 2017
Language eng
Abstract Our ability to select task-relevant information from cluttered visual environments is widely believed to be due to our ability to tune attention to the particular elementary feature values of a sought-after target (e.g., red, orange, yellow). By contrast, recent findings showed that attention is often tuned to feature relationships, that is, features that the target has relative to irrelevant features in the context (e.g., redder, yellower). However, the evidence for such a relational account is so far exclusively based on behavioral measures that do not allow a safe inference about early perceptual processes. The present study provides a critical test of the relational account, by measuring an electrophysiological marker in the EEG of participants (N2pc) in response to briefly presented distractors (cues) that could either match the physical features of the target or its relative features. In a first experiment, the target color and nontarget color were kept constant across trials. In line with a relational account, we found that only cues with the same relative color as the target were attended, regardless of whether the cues had the same physical color as the target. In a second experiment, we demonstrate that attention is biased to the exact target feature value when the target is embedded in a randomly varying context. Taken together, these results provide the first electrophysiological evidence that attention can modulate early perceptual processes differently; in a context-dependent manner versus a context-independent manner, resulting in marked differences in the range of colors that can attract attention.
Keyword Attention
Cognitive control
EEG
N2pc
Visual processes
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Psychology Publications
 
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