Comput Math Methods Med - Neuroelectrical correlates of trustworthiness and dominance judgments related to the observation of political candidates.

Tópicos

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Resumo

The present research investigates the neurophysiological activity elicited by fast observations of faces of real candidates during simulated political elections. We used simultaneous recording of electroencephalographic (EEG) signals as well as galvanic skin response (GSR) and heart rate (HR) as measurements of central and autonomic nervous systems. Twenty healthy subjects were asked to give judgments on dominance, trustworthiness, and a preference of vote related to the politicians' faces. We used high-resolution EEG techniques to map statistical differences of power spectral density (PSD) cortical activity onto a realistic head model as well as partial directed coherence (PDC) and graph theory metrics to estimate the functional connectivity networks and investigate the role of cortical regions of interest (ROIs). Behavioral results revealed that judgment of dominance trait is the most predictive of the outcome of the simulated elections. Statistical comparisons related to PSD and PDC values highlighted an asymmetry in the activation of frontal cortical areas associated with the valence of the judged trait as well as to the probability to cast the vote. Overall, our results highlight the existence of cortical EEG features which are correlated with the prediction of vote and with the judgment of trustworthy and dominant faces.

Resumo Limpo

present research investig neurophysiolog activ elicit fast observ face real candid simul polit elect use simultan record electroencephalograph eeg signal well galvan skin respons gsr heart rate hr measur central autonom nervous system twenti healthi subject ask give judgment domin trustworthi prefer vote relat politician face use highresolut eeg techniqu map statist differ power spectral densiti psd cortic activ onto realist head model well partial direct coher pdc graph theori metric estim function connect network investig role cortic region interest roi behavior result reveal judgment domin trait predict outcom simul elect statist comparison relat psd pdc valu highlight asymmetri activ frontal cortic area associ valenc judg trait well probabl cast vote overal result highlight exist cortic eeg featur correl predict vote judgment trustworthi domin face

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