Neural control of enhanced filtering demands in a combined Flanker and Garner conflict task

PloS One
David BerronManfred Herrmann

Abstract

Several studies demonstrated that visual filtering mechanisms might underlie both conflict resolution of the Flanker conflict and the control of the Garner effect. However, it remains unclear whether the mechanisms involved in the processing of both effects depend on similar filter mechanisms, such that especially the Garner effect is able to modulate filtering needs in the Flanker conflict. In the present experiment twenty-four subjects participated in a combined Garner and Flanker task during two runs of functional magnetic resonance imaging (fMRI) recordings. Behavioral data showed a significant Flanker but no Garner effect. A run-wise analysis, however, revealed a Flanker effect in the Garner filtering condition in the first experimental run, while we found a Flanker effect in the Garner baseline condition in the second experimental run. The fMRI data revealed a fronto-parietal network involved in the processing of both types of effects. Flanker interference was associated with activity in the inferior frontal gyrus, the anterior cingulate cortex, the precuneus as well as the inferior (IPL) and superior parietal lobule (SPL). Garner interference was associated with activation in middle frontal and middle temporal gyrus, the...Continue Reading

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Citations

Jan 30, 2020·Social Cognitive and Affective Neuroscience·N B FernandezP Vuilleumier
Nov 2, 2019·The Journal of Comparative Neurology·Tingting WuJin Fan
Nov 16, 2016·Brain and Behavior·Anne-Katrin VellageNotger G Müller

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