In October 23, 2005 a national referendum was carried out in Brazil about the prohibition of firearm commerce in the country. We combined classic poll opinion tools and electroencephalography (EEG) analysis to study vote decision one week before the referendum. Our poll opinion allowed people to provide us a second opinion on if and how they could change vote until Election Day. We also asked people to estimate the influence of media propaganda upon their vote decision. Here we show that election results were predicted by our poll if the vote migration disclosed by the second opinion was taken into consideration. We also found that vote decision correlated with the EEG recorded during vote decision-making. The estimated propaganda influence also correlated with the EEG recorded during the reading of 6 of the most frequent media advertisement and provided information to model the Vote Decision Space associated with the referendum campaign.


The Neurodynamics of an Election - Trabalho apresentado no IAREP 2006 - Paris



ROCHA, A. F. et al. (2010) Neurodynamics of an election. Brain Research, 1351:198-211


ROCHA, A. F. e F. T. Rocha – Neuroeconomia e Processo Decisório. LTC, São Paulo; 2011