RT Journal Article
SR Electronic
T1 Neural Correlates of the Natural Observation of an Emotionally Loaded Video
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 152298
DO 10.1101/152298
A1 Melanni Nanni
A1 Joel Martínez-Soto
A1 Leopoldo Gonzalez-Santos
A1 Fernando A. Barrios
YR 2017
UL http://biorxiv.org/content/early/2017/06/20/152298.abstract
AB Studies based on a paradigm of free or natural viewing have revealed characteristics that allow us to know how the brain processes stimuli within a natural environment. This method has been little used to study brain function. With a connectivity approach, we examine the processing of emotions using an exploratory method to analyze functional magnetic resonance imaging (fMRI) data. This research describes our approach to modeling stress paradigms suitable for neuroimaging environments. We showed a short film (4.54 minutes) with high negative emotional valence and high arousal content to 24 healthy male subjects (36.42 years old; SD=12.14) during fMRI. Independent component analysis (ICA) was used to identify networks based on spatial statistical independence. Through this analysis we identified the sensorimotor system and its influence on the dorsal attention and default-mode networks, which in turn have reciprocal activity and modulate networks described as emotional.