Additional file 4 of Temporally intermittent communities in brain fMRI correlation networks

Neuroanatomical interpretation. We match brain regions to anatomical regions using the Neurosynth (Yarkoni et al. 2011; Yarkoni 2011) software which, given a keyword, synthesizes neuroimaging data from the relevant literature into an activation map. Communities 0 and 1 contain components that correspond well to the synthesized activation maps for keywords “working memory” and “default mode”, respectively. a Community 0, component 6 is situated in the dorsolateral prefrontal cortex, its component 7 is distributed both in the parietal lobe and the intraperietal sulcus, and there is furthermore some activity in the anterior insula through component 21. b Community 1 component 11 is centered on the posterior cingulate cortex, 13 and 15 are both in the medial prefrontal cortex region and 16 is located in the angular gyrus. Each set of components cover quite well the regions that together make up their associated activation maps. At the same time, the communities also include core components that are not typically active in the associated systems. Notably, there are many active components situated in the occipital lobe which do not map to regions commonly associated with either working memory or default mode function. See Additional file 1: Figure S1 for component maps. (PNG 899 kb)