title: Brain activity during the memorization of visual scenes from TV commercials: an application of high resolution EEG and steady state somatosensory evoked potentials technologies.
abstract: The aim of this study was to elucidate if the TV commercials that were remembered by the subjects after their observation within a documentary elicited particular brain activity when compared to the activity generated during the observation of TV commercials that were forgotten. High resolution EEG recordings were performed in a group of 10 healthy subjects with the steady state somatosensory evoked potentials (SSSEPs) technique, in which a series of light electrical stimulation at the left wrist were delivered at the frequency of 20Hz. The brain activity was indexed by the phase delay of the EEG spectral responses at 20Hz with respect to the stimulus delivering and evaluated at the scalp level as well as at the cortical surface using several regions of interest coincident with the Brodmann areas (BAs). Results suggest that the cerebral processes involved during the observation of TV commercials that were remembered by the population examined (RMB dataset) are generated by the posterior parietal cortices and the prefrontal areas, rather bilaterally. These results are compatible with previously results obtained in literature by using MEG and fMRI devices during similar experimental tasks. High resolution EEG is able to summarize, with the use of SSSEPs methodologies, the behavior of the estimated cortical networks subserving the proposed memory tasks. It is likely that such tool could play a role in the next future for the investigation of the neural substrates of the human behavior in decision-making and recognition tasks.
authors.affiliation: IRCCS "Fondazione Santa Lucia", Rome, Italy.
authors.forename: Laura
authors.initials: L
authors.lastname: Astolfi
authors.forename: Fabrizio De Vico
authors.initials: Fde V
authors.lastname: Fallani
authors.forename: Febo
authors.initials: F
authors.lastname: Cincotti
authors.forename: Donatella
authors.initials: D
authors.lastname: Mattia
authors.forename: Luigi
authors.initials: L
authors.lastname: Bianchi
authors.forename: Maria Grazia
authors.initials: MG
authors.lastname: Marciani
authors.forename: Serenella
authors.initials: S
authors.lastname: Salinari
authors.forename: Imma
authors.initials: I
authors.lastname: Gaudiano
authors.forename: Gaetano
authors.initials: G
authors.lastname: Scarano
authors.forename: Ramon
authors.initials: R
authors.lastname: Soranzo
authors.forename: Fabio
authors.initials: F
authors.lastname: Babiloni
mesh_terms: D000328:Adult; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000502:physiology*; D004558:Electric Stimulation; D004569:Electroencephalography; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D011939:Mental Recall / Q000502:physiology*; D008959:Models, Neurological; D009415:Nerve Net / Q000502:physiology; D010775:Photic Stimulation; D012815:Signal Processing, Computer-Assisted; D013690:Television; D014796:Visual Perception / Q000502:physiology