Table 2.

Areas that showed a significant group × load interaction.

Regions where adults showed greater activation as a function of difficulty level than children
Region	Hem	MNI Coordinates			Cluster Size (voxels)	Z value	P-value
		x	y	z
Superior Parietal Gyrus extending to Precuneus	L	−30	−64	46	2962	6.35	2.96 × 10−10
Superior Parietal Gyrus extending to Precuneus	R	36	−60	54	2595	6.19	2.68 × 10−9
Inferior Frontal Gyrus	L	−48	26	18	924	5.05	3.94 × 10−4
Inferior Frontal Gyrus	R	38	30	14	682	4.64	3.56 × 10−3
Cerebellum	R	24	−64	−24	634	4.54	5.66 × 10−3
Middle Frontal Gyrus	L	−34	6	58	456	4.65	0.04

Regions where adults showed less activation as a function of difficulty level than children
Region	Hem	MNI Coordinates			Cluster size (Voxels)	Z value	p-Value
		x	y	z
Anterior medial prefrontal cortex	L	−4	62	22	3155	6.49	9.62 × 10−11
Anterior cingulate/cingulate gyrus	L	−4	18	24	X	5.51
Anterior cingulate/cingulate gyrus	R	4	14	26	X	4.69
Anterior medial prefrontal cortex	R	12	68	10	X	5.05
Heschl's gyrus	R	42	−20	14	1707	4.88	8.94 × 10−7
Posterior cingulate cortex	L	−12	−50	36	1094	4.24	9.42 × 10−5

Note: the p-value shown for each cluster represents the estimated significance as determined by the FEAT toolbox of FSL; X = peak local maximas within cluster.