Enhanced frontal activation underlies sparing from the attentional blink: evidence from human electrophysiology

Dell'Acqua, Roberto, Doro, Mattia, Dux, Paul E., Losier, Talia and Jolicour, Pierre (2016) Enhanced frontal activation underlies sparing from the attentional blink: evidence from human electrophysiology. Psychophysiology, 53 5: 623-633. doi:10.1111/psyp.12618


Author Dell'Acqua, Roberto
Doro, Mattia
Dux, Paul E.
Losier, Talia
Jolicour, Pierre
Title Enhanced frontal activation underlies sparing from the attentional blink: evidence from human electrophysiology
Journal name Psychophysiology   Check publisher's open access policy
ISSN 1469-8986
0048-5772
Publication date 2016-05
Year available 2016
Sub-type Article (original research)
DOI 10.1111/psyp.12618
Open Access Status Not Open Access
Volume 53
Issue 5
Start page 623
End page 633
Total pages 11
Place of publication Hoboken, NJ, United States
Publisher Wiley-Blackwell Publishing
Collection year 2017
Language eng
Abstract Using the ERP method, we examined the processing operations elicited by stimuli that appear within the same temporal attention window. Forty subjects searched for letter targets among digit distractors displayed in rapid serial visual presentation (RSVP). ERPs were examined under conditions where a single target was embedded among distractors and compared to those recorded when two consecutive targets were embedded among distractors. Standard and independent component analyses revealed two temporally and topographically distinct ERP responses, a midfrontal P3a component peaking at about 300 ms followed by a midparietal P3b component peaking at about 450 ms. With minimal latency variations, the frontal P3a was amplified when elicited by two consecutive targets relative to a single target. The parietal P3b response was also amplified when elicited by two consecutive targets compared to a single target but, in contrast to P3a, it was also associated with a substantially longer time course. These results provide evidence for the involvement of frontal brain regions in the close-to-concurrent selection of two consecutive targets displayed in RSVP, and of posterior brain regions in the serial encoding of targets in visual working memory. The present findings are discussed in relation to current models of temporal gating of attention and the attentional blink effect.
Keyword Attentional blink
Event-related potentials
Frontoparietal neural circuit
Independent component analysis (ICA)
P3 component
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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