Journal
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING
Volume 49, Issue 5, Pages 579-583Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11517-011-0747-x
Keywords
Neuromarketing; EEG frontal asymmetry; Power spectral density; Pleasantness; Emotion
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Funding
- Fondazione Compagnia di San Paolo, programma neuroscienze
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The aim of this research is to analyze the changes in the EEG frontal activity during the observation of commercial videoclips. In particular, we aimed to investigate the existence of EEG frontal asymmetries in the distribution of the signals' power spectra related to experienced pleasantness of the video, as explicitly rated by the eleven experimental subjects investigated. In the analyzed population, maps of Power spectral density (PSD) showed an asymmetrical increase of theta and alpha activity related to the observation of pleasant (unpleasant) advertisements in the left (right) hemisphere. A correlation analysis revealed that the increase of PSD at left frontal sites is negatively correlated with the degree of pleasantness perceived. Conversely, the de-synchronization of left alpha frontal activity is positively correlated with judgments of high pleasantness. Moreover, our data presented an increase of PSD related to the observation of unpleasant commercials, which resulted higher with respect to the one elicited by pleasant advertisements.
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