Fig. 4 | Communications Biology

Fig. 4

From: The neural basis of meta-volition

Fig. 4

Axial diffusivity correlates of meta-volitional ability. Three-dimensional volume glyph plots showing white matter voxels with axial diffusivity significantly correlated with the slope parameter (β) of the choice psychometric function. Sagittal, coronal, and axial views of the five significant clusters falling within the anterior corona radiate (ACR), superior frontal gyrus white matter (SFG), and inferior fronto-occipital fasciculus (IFOF) are shown. Each plot is not a section but a volume rendering where the value of each voxel is given by a glyph coloured by the p value, depth being indicated by the stack of glyphs at that point. The conjunction of the three views allows each voxel to be identified unambiguously. The MNI coordinates are given for each view. The line sections are contours drawn through voxels of value 100 in the MNI 152 T1 volume, cut at x = 10 for the axial view, y = 0 for the coronal view, and z = 0 for the axial view. The subplots show the cluster level raw data for each sub-region, giving the corrected p value of the correlation in the top right corner, with a regression fit for illustration. The axial brain icons in each of these subplots indicate the extent of the corresponding cluster. Results were considered significant at p < 0.05 and clusters with over 100 contiguous voxels, corrected for multiple comparisons using threshold-free cluster enhancement (TFCE), an approach which avoids the choice of an arbitrary threshold for initial cluster formation. See Methods for further details. A manipulable three-dimensional rendering of the data presented here is available in Supplementary Figure 1

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