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14 The Open Neuroimaging Journal, 2008, 2, 14-19 Inter-Subject Synchronization of Prefrontal Cortex Hemodynamic Activity During Natural Viewing
BibTeX
@MISC{Jääskeläinen_14the,
author = {Iiro P. Jääskeläinen and Katri Koskentalo and Marja H. Balk and Taina Autti and Jaakko Kauramäki and Cajus Pomren and Mikko Sams},
title = {14 The Open Neuroimaging Journal, 2008, 2, 14-19 Inter-Subject Synchronization of Prefrontal Cortex Hemodynamic Activity During Natural Viewing},
year = {}
}
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Abstract
Abstract: Hemodynamic activity in occipital, temporal, and parietal cortical areas were recently shown to correlate across subjects during viewing of a 30-minute movie clip. However, most of the frontal cortex lacked between-subject correlations. Here we presented 12 healthy naïve volunteers with the first 72 minutes of a movie (“Crash”, 2005, Lions Gate Films) outside of the fMRI scanner to involve the subjects in the plot of the movie, followed by presentation of the last 36 minutes during fMRI scanning. We observed significant between-subjects correlation of fMRI activity in especially right hemisphere frontal cortical areas, in addition to the correlation of activity in temporal, occipital, and parietal areas. It is possible that this resulted from the subjects following the plot of the movie and being emotionally engaged in the movie during fMRI scanning. We further show that probabilistic independent component analysis (ICA) reveals meaningful activations in individual subjects during natural viewing.
Keyphrases
natural viewing prefrontal cortex hemodynamic activity 14-19 inter-subject synchronization open neuroimaging journal ve volunteer 30-minute movie clip probabilistic independent component analysis parietal cortical area individual subject parietal area lion gate film fmri scanner hemodynamic activity right hemisphere frontal cortical area frontal cortex significant between-subjects correlation meaningful activation fmri activity between-subject correlation
