Figure 4.
Group-wise BOLD activation maps for non-parametric random effects analysis: for “mild” (A), “moderate” (B) and “high” (C) electrical forepaw stimulation. The activation maps are overlaid on a T2-weighted MRI rat brain atlas. Significantly greater activation in the RIM group relative to the control group is shown by a red/yellow colourbar and significantly greater activation in the control group relative to the RIM group is shown by a blue/green colourbar. Abbreviations: RC = retrosplenial cortex; SC = superior colliculus; APN = anterior pretectal nucleus. Threshold = P < 0.001 with a cluster size of 5 voxels.