Table 4.

Brain regions that adults and children show correlation between MRS and arithmetic task performance.

Condition	Region	BA	# of Voxels	Peak Z-Score	Peak MNI Coordinates (mm)
					X	Y	Z
Adult
Positive
	R Caudate		118	3.69	8	6	20
Negative
	L MOG	19	151	3.92	−48	−84	0
	R PHG	30	115	3.76	14	−24	−16
Children
Positive
	None
Negative
	L MFG	44	126	4.03	−52	24	36
	SMA	6	201	3.98	−2	−8	60
	L SMG/Postcentral	2/3/48	415	3.81	−60	−24	38
	Gyrus
	L Postcentral Gyrus/IFG	44	167	3.74	−62	4	42
	L MFG	46	105	3.58	−28	46	32
	R Thalamus		123	3.44	20	−20	8
	L Thalamus		190	3.42	−22	2	12
	R Insula	48	109	3.41	32	0	12
	R MFG	9	140	3.33	36	14	56

Note: Each cluster was determined using the voxel-wise height threshold of p < .01, multiple comparison correction at p < .05 using a Monte Carlo determined cluster extent of 100 voxels after gray matter masking. BA, Brodmann area. MOG, middle occipital gyrus. PHG, parahippocampal gyrus. MFG, middle frontal gyrus. SMA, supplementary motor area. IFG, inferior frontal gyrus.