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Parsing the Flanker task to reveal behavioral and oscillatory correlates of unattended conflict interference

Articolo
Data di Pubblicazione:
2019
Abstract:
Stimulus-Response conflict is generated by an overlap between stimulus and response dimensions, but the intrinsic nature of this interaction is not yet deeply clarified. In this study, using a modified Eriksen flanker task, we have investigated how flankers have to be incongruent to target in order to produce an interference and whether and how this interference interacts with the one produced by Stimulus features overlap. To these aims, an Eriksen-like task employing oriented handsarrows has been designed to distinguish between two types of Stimulus-Response (S-R) interferences: one derived by a short-term association and one based on automatic processes. Stimulus-Stimulus (S-S) conflict has been also included in the same factorial design. Behavioral, Event Related Potential (ERP) and oscillatory activity data have been measured. Results revealed distinct S-S and automatic S-R effects on behavioral performance. ERP and Theta band power modulation results suggested an early frontal S-S conflict processing followed by a posterior simultaneous S-S and automatic S-R conflict processing. These findings provide evidence that, in presence of different conflicts, the sequence of stimulus identification and response selection could not move forward in a linear serial direction, but it may involve further effort, mirrored in posterior late components and response time prolongation.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
stimulus-response compatibility; cognitive control mechanisms; anterior cingulate cortex; selective attention; working-memory; frontal theta; visual-search; dynamics; overlap
Elenco autori:
Brunetti, Marcella; Zappasodi, Filippo; Croce, Pierpaolo; Di Matteo, Rosalia
Autori di Ateneo:
BRUNETTI Marcella
CROCE PIERPAOLO ARTURO
DI MATTEO ROSALIA
ZAPPASODI Filippo
Link alla scheda completa:
https://ricerca.unich.it/handle/11564/711724
Link al Full Text:
https://ricerca.unich.it//retrieve/handle/11564/711724/174201/Brunetti_et_al-2019-Scientific_Reports.pdf
Pubblicato in:
SCIENTIFIC REPORTS
Journal
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URL

https://www.nature.com/articles/s41598-019-50464-x
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