Table 2.

Regions that increased or decreased significantly to increasing working memory load

A. Positive modulation to difficulty effect
Cluster Label	BA	k	X	Y	Z	t-value	Cluster-Level p fwe
L/R posterior parietal/precuneus	39/40/7	4731	42	−42	42	19.57	< .001
			−39	−48	42	18.94
			33	−66	39	18.90
L/R frontal/subcortical/cerebellum	6/9	16431	−30	−63	−33	17.64	< .001
			30	−63	−33	16.94
			33	12	54	16.74

B. Negative modulation to difficulty effect
Cluster Label	BA	k	X	Y	Z	t-value	Cluster-Level p fwe
L/R medial cortex/temporal	10/20/47	18456	−3	60	3	14.57	< .001
			−6	−51	27	13.09
			45	−27	21	11.59

Note. The Statistical nonParametric Mapping toolbox v13 (SnPM) was used to calculate cluster thresholds. Abbreviations: BA – Brodmann Area; L – Left; R – Right