Table 2.

Age effects on mean univariate SM effects and spread of multivariate SM effects in the LTM task

ROI/ measure	Model		Linear			Quadratic
ROI/ measure	F	p	t	r_adj²	p	T	r_adj²	p
Mean univariate SM activation
PFC	5.49	0.00525	2.43	0.0312	0.0166	2.58	0.0371	0.0111
PVC	0.426	0.654	0.728	—	0.480	0.703	—	0.495
PFC-PVC	0.837	0.436	0.883	—	0.388	1.084	—	0.293
Multivariate spread (SD) of SM activity
PFC	6.36	0.00240	−3.33	0.0701	0.000998	−1.44	—	0.151
PVC	11.3	<0.0001	−3.49	0.0780	0.000650	−3.50	0.0784	0.000621
PFC-PVC	2.02	0.109	4.16	—	0.0437	0.398	—	0.690

PFC-PVC refers to analyses in which the dependent variable was the difference in each measure between PFC and PVC. n = 119.