Table 4

Effect of luminance intensity

Contrast: 1800–600	Controls						Migraineurs
	Area of activation	BA	Z score	MNI coord			Area of activation	BA	Z score	MNI coord
	Area of activation	BA	Z score	x	y	z	Area of activation	BA	Z score	x	y	z
Without pain	No first-order activation to compare						Cuneus	18	3.52	−2	−82	22
							PCC	30/31	3.28	−6	−68	2
							PCC	30/31	3.19	−2	−102	14
With pain	Cuneus	18	3.21	8	−82	50	Cuneus	18/19	2.89	−2	−92	18
	Precuneus	7/19	2.97	8	−80	18			2.80	−4	−82	20
	Precuneus	7/19	2.58	2	−92	32			2.57	−12	−80	22

Second-order analysis within the assumption mask, p uncorrected <0.05, volume k>200 voxels.
BA, Brodmann area; MNI coord, coordinates in the Montreal National Institute template; PCC, posterior cingulate cortex.