000198627 001__ 198627
000198627 005__ 20181203023503.0
000198627 0247_ $$2doi$$a10.1371/journal.pone.0091090
000198627 022__ $$a1932-6203
000198627 02470 $$2ISI$$a000332485800099
000198627 037__ $$aARTICLE
000198627 245__ $$aConnectivity Changes Underlying Neurofeedback Training of Visual Cortex Activity
000198627 260__ $$aSan Francisco$$bPublic Library of Science$$c2014
000198627 269__ $$a2014
000198627 300__ $$a9
000198627 336__ $$aJournal Articles
000198627 520__ $$aNeurofeedback 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.
000198627 700__ $$aScharnowski, Frank$$uUCL, Wellcome Trust Ctr Neuroimaging, UCL Inst Neurol, London, England
000198627 700__ $$aRosa, Maria Joao$$uKings Coll London, Inst Psychiat, Dept Neurosci, London WC2R 2LS, England
000198627 700__ $$aGolestani, Narly$$uUCL, UCL Inst Cognit Neurosci, London, England
000198627 700__ $$aHutton, Chloe$$uUCL, Wellcome Trust Ctr Neuroimaging, UCL Inst Neurol, London, England
000198627 700__ $$aJosephs, Oliver$$uUCL, Wellcome Trust Ctr Neuroimaging, UCL Inst Neurol, London, England
000198627 700__ $$aWeiskopf, Nikolaus$$uUCL, Wellcome Trust Ctr Neuroimaging, UCL Inst Neurol, London, England
000198627 700__ $$aRees, Geraint$$uUCL, Wellcome Trust Ctr Neuroimaging, UCL Inst Neurol, London, England
000198627 773__ $$j9$$k3$$tPlos One
000198627 909C0 $$0252169$$pMIPLAB$$xU12143
000198627 909CO $$ooai:infoscience.tind.io:198627$$pSTI$$particle
000198627 917Z8 $$x152027
000198627 937__ $$aEPFL-ARTICLE-198627
000198627 973__ $$aOTHER$$rREVIEWED$$sPUBLISHED
000198627 980__ $$aARTICLE