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Meta-Analysis
. 2008 Nov;18(11):2553-9.
doi: 10.1093/cercor/bhn014. Epub 2008 Feb 21.

Functional Coactivation Map of the Human Brain

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Free PMC article
Meta-Analysis

Functional Coactivation Map of the Human Brain

Roberto Toro et al. Cereb Cortex. .
Free PMC article

Abstract

Understanding the interactions among different brain regions is fundamental to our understanding of brain function. Here we describe a complete map of functional connections in the human brain derived by an automatic meta-analysis of 825 neuroimaging articles, representing 3402 experiments. The likelihood of a functional connection between regions was estimated by studying the interdependence of their "activity," as reported in each experiment, across all experiments. We obtained a dense coactivation map that recovers some fundamental principles of the brain's functional connectivity, such as the symmetric interhemispheric connections, and important functional networks, such as the fronto-parietal attention network, the resting state network and the motor network.

Figures

Figure 1.
Figure 1.
Characterization of the experiments used in the coactivation map. Distribution of the different cognitive domains represented by the experiments after the BrainMap classification (A). Histogram of the number of locations per experiment (B). Experiments reported on average 8 locations, and a decreasing number of experiments reported large numbers of locations.
Figure 2.
Figure 2.
Reproducibility of the coactivation map. Pairs of partial coactivation maps computed from disjoint random subsets of the total database of experiments were progressively more similar as the number of experiments increased. The plot shows the distribution of the correlation coefficient for 20 pairs of partial coactivation maps computed from independent sets of 500, 700, 900, 1100, 1300, 1500, and 1700 experiments.
Figure 3.
Figure 3.
Symmetric interhemispheric coactivations. Coactivations of regions in the left hemisphere included most of the time the symmetric region in the right hemisphere, and vice versa. The figure shows 3-dimensional reconstructions (A, B) and stereotaxic slices of 4 networks corresponding to 4 seed-voxels in the axial plane z = 28 (C), and 4 networks in the coronal plane y = −6 (D). The network clusters are isosurfaces for P = 0.01, and the location of the seed-voxels is indicated by white squares in the stereotaxic slices.
Figure 4.
Figure 4.
Fronto-parietal “attention” network. Three-dimensional reconstruction and axial (z = 48) and para-sagittal (x = 30) stereotaxic slices of the network recovered with a seed-voxel at the left intraparietal sulcus (IPS, x = −26, y = −58, z = 48). It includes the supplementary motor area (SMA) and preSMA, left and right anterior insula (aIns), frontal eye fields (FEF), dorsolateral prefrontal cortex (DLPFC), inferior precentral sulcus (iPCS), ventral occipital cortex (vOC), inferior parietal lobule (iPL), and the ventral IPS (vIPS). The network clusters are isosurfaces for P = 0.01, and the location of the seed-voxel is indicated in the axial slice by a white square.
Figure 5.
Figure 5.
Cingulo-parietal “resting state” network. Three-dimensional reconstructions and sagittal stereotaxic slice (x = −2) of the network recovered with a seed-voxel at the anterior cingulate cortex (aCC, x = −2, y = 46, z = −4). It includes the posterior cingulate cortex (pCC), nucleus accumbens (NA), lateral parietal cortex (LPC), inferior temporal cortex (iTC), and the superior frontal cortex (SFC). The network clusters are isosurfaces for P = 0.01 (strong red), and P = 0.5 (in transparency). The location of the seed-voxel is indicated by a white square in the sagittal slice.
Figure 6.
Figure 6.
Cortico-diencephalo-cerebellar “motor” network. Three-dimensional reconstructions and coronal (y = −26) and para-sagittal (x = −34) stereotaxic slices of the network recovered with a seed-voxel at the dorsal part of the left central sulcus (CS, x = −34, y = −26, z = 60). The network includes the right central sulcus, caudal cingulate motor area (CMA), ipsilateral putamen (Pu), thalamus (Th), and left cerebellum (Cb-L), and the contralateral anterior lobe of the cerebellum (aCb). The network clusters are isosurfaces for P = 0.01, and the seed-voxel is indicated by white squares in the coronal and sagittal slices.

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