Table 2.

Altered gray matter volume in patients with migraine and TTH

MNI coordinates			Cluster size	Anatomical region	Local peak T-value
x	y	z
Migraine < controls
6	23	−24	287	R orbitofrontal cortex	4.05
TTH > controls
-11	−80	51	1316	L lateral occipital cortex	−5.27
20	24	3	628	R caudate	−3.70
36	12	−27	278	R temporal pole	−3.51
-60	−33	41	295	L supramarginal gyrus	−3.37
-2	42	29	426	L anterior cingulate cortex	−3.28

Abbreviations: L left, MNI the Montreal Neurological Institute, R right, TTH tension-type headache