Table 5.

Age-related decline in surface-based cortical thickness.

ROI	Hemi	GID	Cortical thickness (mm)	Percent change	p value (difference)	FDR
Ventral PM	Left	Younger	2.91	−6.59	0.00042	*
	Left	Older	2.72	−6.59	0.00042	*
	Right	Younger	2.82	−3.81	0.05921	n.s.
	Right	Older	2.71	−3.81	0.05921	n.s.

SMA-proper	Left	Younger	2.90	−6.05	0.00017	*
	Left	Older	2.73	−6.05	0.00017	*
	Right	Younger	2.92	−7.60	0.00013	*
	Right	Older	2.70	−7.60	0.00013	*

Posterior SFG	Left	Younger	2.98	−7.31	0.00138	*
	Left	Older	2.76	−7.31	0.00138	*
	Right	Younger	2.90	−5.93	0.00129	*
	Right	Older	2.72	−5.93	0.00129	*

PT	Left	Younger	2.56	−4.42	0.03620	*
	Left	Older	2.45	−4.42	0.03620	*
	Right	Younger	2.61	−3.29	0.09122	n.s.
	Right	Older	2.52	−3.29	0.09122	n.s.

TTS	Left	Younger	2.47	−6.95	0.03766	*
	Left	Older	2.30	−6.95	0.03766	*
	Right	Younger	2.67	−9.80	0.00008	*
	Right	Older	2.41	−9.80	0.00008	*

Middle STS	Left	Younger	2.54	−6.04	0.00019	*
	Left	Older	2.38	−6.04	0.00019	*
	Right	Younger	2.70	−6.92	0.00015	*
	Right	Older	2.51	−6.92	0.00015	*

aOTS	Left	Younger	2.70	−1.23	0.35579	n.s.
	Left	Older	2.67	−1.23	0.35579	n.s.
	Right	Younger	2.65	−1.20	0.27132	n.s.
	Right	Older	2.62	−1.20	0.27132	n.s.

OPole	Left	Younger	2.09	−1.24	0.28350	n.s.
	Left	Older	2.07	−1.24	0.28350	n.s.
	Right	Younger	2.13	−2.38	0.11829	n.s.
	Right	Older	2.08	−2.38	0.11829	n.s.