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Frontal Alpha Asymmetry and Theta Oscillations Associated With Information Sharing Intention

Social media has gained increasing importance in many aspects of everyday life, from building relationships to establishing collaborative networks between individuals worldwide. Sharing behavior is an essential part of maintaining these dynamic networks. However, the precise neural factors that coul...

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Autores principales: Fischer, Nastassja L., Peres, Rafael, Fiorani, Mario
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6082926/
https://www.ncbi.nlm.nih.gov/pubmed/30116183
http://dx.doi.org/10.3389/fnbeh.2018.00166
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author Fischer, Nastassja L.
Peres, Rafael
Fiorani, Mario
author_facet Fischer, Nastassja L.
Peres, Rafael
Fiorani, Mario
author_sort Fischer, Nastassja L.
collection PubMed
description Social media has gained increasing importance in many aspects of everyday life, from building relationships to establishing collaborative networks between individuals worldwide. Sharing behavior is an essential part of maintaining these dynamic networks. However, the precise neural factors that could be related to sharing behavior in online communities remain unclear. In this study, we recorded electroencephalographic (EEG) oscillations of human subjects while they were watching short videos. The subjects were later asked to evaluate the videos based on how much they liked them and whether they would share them. We found that, at the population level, subjects watching videos that would not be shared had higher power spectral density (PSD) amplitudes in the theta band (4–8 Hz), primarily over the frontal and parietal sites of the right hemisphere, than subjects watching videos that would be shared. Previous studies have associated task disengagement with an increase in scalp-wide theta activation, which can be interpreted as a mind-wandering effect. This might suggest that the decision to not share the video may lead to a more automatic/effortless neural pattern. We also found that watching videos that would be shared was associated with lower PSD amplitudes in the alpha band (8–12 Hz) over the central and right frontal sites, and with more negative scores of frontal alpha asymmetry (FAA) index scores. These results may be related to previous work linking right-sided frontal EEG asymmetry to the pursuit of social conformity and avoidance of negative outcomes, such as social isolation. Finally, using support vector machine (SVM) algorithms, we show that these EEG parameters and preference rating scores can be used to improve the predictability of sharing information behavior. The information sharing-related EEG pattern described here could therefore improve our understanding of the neural markers associated with sharing behavior and contribute to studies about stimuli propagation.
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spelling pubmed-60829262018-08-16 Frontal Alpha Asymmetry and Theta Oscillations Associated With Information Sharing Intention Fischer, Nastassja L. Peres, Rafael Fiorani, Mario Front Behav Neurosci Neuroscience Social media has gained increasing importance in many aspects of everyday life, from building relationships to establishing collaborative networks between individuals worldwide. Sharing behavior is an essential part of maintaining these dynamic networks. However, the precise neural factors that could be related to sharing behavior in online communities remain unclear. In this study, we recorded electroencephalographic (EEG) oscillations of human subjects while they were watching short videos. The subjects were later asked to evaluate the videos based on how much they liked them and whether they would share them. We found that, at the population level, subjects watching videos that would not be shared had higher power spectral density (PSD) amplitudes in the theta band (4–8 Hz), primarily over the frontal and parietal sites of the right hemisphere, than subjects watching videos that would be shared. Previous studies have associated task disengagement with an increase in scalp-wide theta activation, which can be interpreted as a mind-wandering effect. This might suggest that the decision to not share the video may lead to a more automatic/effortless neural pattern. We also found that watching videos that would be shared was associated with lower PSD amplitudes in the alpha band (8–12 Hz) over the central and right frontal sites, and with more negative scores of frontal alpha asymmetry (FAA) index scores. These results may be related to previous work linking right-sided frontal EEG asymmetry to the pursuit of social conformity and avoidance of negative outcomes, such as social isolation. Finally, using support vector machine (SVM) algorithms, we show that these EEG parameters and preference rating scores can be used to improve the predictability of sharing information behavior. The information sharing-related EEG pattern described here could therefore improve our understanding of the neural markers associated with sharing behavior and contribute to studies about stimuli propagation. Frontiers Media S.A. 2018-08-02 /pmc/articles/PMC6082926/ /pubmed/30116183 http://dx.doi.org/10.3389/fnbeh.2018.00166 Text en Copyright © 2018 Fischer, Peres and Fiorani. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Fischer, Nastassja L.
Peres, Rafael
Fiorani, Mario
Frontal Alpha Asymmetry and Theta Oscillations Associated With Information Sharing Intention
title Frontal Alpha Asymmetry and Theta Oscillations Associated With Information Sharing Intention
title_full Frontal Alpha Asymmetry and Theta Oscillations Associated With Information Sharing Intention
title_fullStr Frontal Alpha Asymmetry and Theta Oscillations Associated With Information Sharing Intention
title_full_unstemmed Frontal Alpha Asymmetry and Theta Oscillations Associated With Information Sharing Intention
title_short Frontal Alpha Asymmetry and Theta Oscillations Associated With Information Sharing Intention
title_sort frontal alpha asymmetry and theta oscillations associated with information sharing intention
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6082926/
https://www.ncbi.nlm.nih.gov/pubmed/30116183
http://dx.doi.org/10.3389/fnbeh.2018.00166
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