Fig. 3.

Whole brain analyses showed a regional grey matter volume increase in patients with obsessive–compulsive disorder with sensory phenomena in comparison to healthy controls in a large cluster encompassing the left posterior putamen, pallidum, thalamus and mesencephalic locomotor region (peak Montreal Neurological Institute coordinates: x, y, z = −5, −30, −18; t = 3.84, p < 0.05). The sensorimotor grey matter volume increase reported in the region of interest analysis can also be observed in the sagittal and coronal slices. Colour bar represents t values. L = left hemisphere.