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Scientific article
Open access
English

Connectivity changes underlying neurofeedback training of visual cortex activity

Published inPloS one, vol. 9, no. 3, e91090
Publication date2014
Abstract

Neurofeedback based on real-time functional magnetic resonance imaging (fMRI) is a new approach that allows training of voluntary control over regionally specific brain activity. However, the neural basis of successful neurofeedback learning remains poorly understood. Here, we assessed changes in effective brain connectivity associated with neurofeedback training of visual cortex activity. Using dynamic causal modeling (DCM), we found that training participants to increase visual cortex activity was associated with increased effective connectivity between the visual cortex and the superior parietal lobe. Specifically, participants who learned to control activity in their visual cortex showed increased top-down control of the superior parietal lobe over the visual cortex, and at the same time reduced bottom-up processing. These results are consistent with efficient employment of top-down visual attention and imagery, which were the cognitive strategies used by participants to increase their visual cortex activity.

Citation (ISO format)
SCHARNOWSKI, Frank et al. Connectivity changes underlying neurofeedback training of visual cortex activity. In: PloS one, 2014, vol. 9, n° 3, p. e91090. doi: 10.1371/journal.pone.0091090
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ISSN of the journal1932-6203
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Creation08/18/2014 1:29:00 PM
First validation08/18/2014 1:29:00 PM
Update time03/14/2023 9:46:42 PM
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