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Published in: Brain Structure and Function 4/2018

Open Access 01-05-2018 | Original Article

Disentangling brain activity related to the processing of emotional visual information and emotional arousal

Authors: Michał Kuniecki, Kinga Wołoszyn, Aleksandra Domagalik, Joanna Pilarczyk

Published in: Brain Structure and Function | Issue 4/2018

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Abstract

Processing of emotional visual information engages cognitive functions and induces arousal. We aimed to examine the modulatory role of emotional valence on brain activations linked to the processing of visual information and those linked to arousal. Participants were scanned and their pupil size was measured while viewing negative and neutral images. The visual noise was added to the images in various proportions to parametrically manipulate the amount of visual information. Pupil size was used as an index of physiological arousal. We show that arousal induced by the negative images, as compared to the neutral ones, is primarily related to greater amygdala activity while increasing visibility of negative content to enhanced activity in the lateral occipital complex (LOC). We argue that more intense visual processing of negative scenes can occur irrespective of the level of arousal. It may suggest that higher areas of the visual stream are fine-tuned to process emotionally relevant objects. Both arousal and processing of emotional visual information modulated activity within the ventromedial prefrontal cortex (vmPFC). Overlapping activations within the vmPFC may reflect the integration of these aspects of emotional processing. Additionally, we show that emotionally-evoked pupil dilations are related to activations in the amygdala, vmPFC, and LOC.
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Metadata
Title
Disentangling brain activity related to the processing of emotional visual information and emotional arousal
Authors
Michał Kuniecki
Kinga Wołoszyn
Aleksandra Domagalik
Joanna Pilarczyk
Publication date
01-05-2018
Publisher
Springer Berlin Heidelberg
Published in
Brain Structure and Function / Issue 4/2018
Print ISSN: 1863-2653
Electronic ISSN: 1863-2661
DOI
https://doi.org/10.1007/s00429-017-1576-y

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