Connectivity-based neurofeedback: dynamic causal modeling for real-time fMRI.

ABSTRACT: Neurofeedback based on real-time fMRI is an emerging technique that can be used to train voluntary control of brain activity. Such brain training has been shown to lead to behavioral effects that are specific to the functional role of the targeted brain area. However, real-time fMRI-based neurofeedback so far was limited to mainly training localized brain activity within a region of interest. Here, we overcome this limitation by presenting near real-time dynamic causal modeling in order to provide feedback information based on connectivity between brain areas rather than activity within a single brain area. Using a visual-spatial attention paradigm, we show that participants can voluntarily control a feedback signal that is based on the Bayesian model comparison between two predefined mode

SUBMITTER: Koush Y 

PROVIDER: S-EPMC3734349 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature