Extent and time-course of competition in visual cortex between emotionally arousing distractors and a concurrent task

The European Journal of Neuroscience
Menton M DeweeseAndreas Keil

Abstract

Emotionally arousing cues automatically attract attentional resources, which may be at the cost of processing task-related information. Of central importance is how the visual system resolves competition for processing resources among stimuli differing in motivational salience. Here, we assessed the extent and time-course of competition between emotionally arousing distractors and task-related stimuli in a frequency-tagging paradigm. Steady-state visual evoked potentials (ssVEPs) were evoked using random-dot kinematograms that consisted of rapidly flickering (8.57 Hz) dots, superimposed upon emotional or neutral distractor pictures flickering at 12 Hz. The time-varying amplitude of the ssVEP evoked by the motion detection task showed a significant reduction to the task-relevant stream while emotionally arousing pictures were presented as distractors. Competition between emotionally arousing pictures and moving dots began 450 ms after picture onset and persisted for an additional 2600 ms. Competitive effects of the overlapping task and picture stream revealed cost effects for the motion detection task when unpleasant pictures were presented as distractors between 450 and 1650 ms after picture onset, where an increase in ssVEP am...Continue Reading

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Citations

Oct 5, 2016·Psychophysiology·Matthias J WieserAndreas Keil
Jan 15, 2020·Journal of Cognitive Neuroscience·Valeria BekhterevaMatthias M Müller
Feb 11, 2020·Frontiers in Human Neuroscience·Luiza Bonfim PachecoIsabel A David
Apr 13, 2017·Social Cognitive and Affective Neuroscience·Jessica S B FigueiraIsabel A David
May 20, 2020·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Matthias J Wieser, Andreas Keil
Mar 21, 2021·The European Journal of Neuroscience·Anna-Lena TebbeAndreas Keil

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