Dynamics of brain networks: the connectivity modulated by external motors stimuli

BOCACCIO H.; VILLARREAL M.

Buenos Aires

Congreso; 2nd LABMAN Meeting; 2017

Latin American Brain Mapping Network (LABMAN)

The aim of this work is to analyze changes in brain connectivity patterns in response to an external stimulus using fMRI data. For this purpose, we studied the dynamics of correlations between the average brain signals within 90 regions of interest (AAL atlas), while right-handed healthy subjects performed a block design paradigm of motor task (open and close the right hand). We found that block correlations show significant differences between task conditions in several regions. From these results we applied support vector machines (SVM) methods of machine learning to train a binary classifier that identifies configurations of brain coherence on task and rest, using the most significative correlations (p