Table 4.

Correlations between speech production and semantic/comprehension tests and FA in the frontal speech and ventral language tracts in PPA

FA	Speech production score		Semantic association (PPTP)		Word comprehension (PPVT)
FA	ρ	p	ρ	p	ρ	p
Left frontal speech tracts
BA44-SMAc (pre-SMA)	0.72	0.000^*	−0.03	0.87	−0.15	0.46
BA6vPMC-SMAc (SMA proper)	0.56	0.004^*	−0.11	0.58	−0.38	0.06
BA44-Putamen	0.57	0.003^*	0.22	0.28	0.07	0.74
SMAc-Caudate	0.51	0.008^*	−0.06	0.78	0.04	0.85
Left ventral language tracts
Anterior ILF	−0.08	0.67	0.72	0.000^*	0.63	0.000^*
ILF	0.08	0.68	0.35	0.08	0.40	0.045^*

↵*Significant correlations in PPA variants at p < 0.05.
PPTP, Pyramids and Palm Trees Test–Picture Version; PPVT, Peabody Picture Vocabulary Test–Revised.