Table 2.

Description of FFA regions of interest for children, teens, and adults.

	Total Volume*	Peak % Signal	Talairach Coordinates of Peak % Signal Voxel			MNI Coordinates of Peak % Signal Voxel
FFA ROI	(µl)	(F > O)	x	y	z	x	y	z
Right Hemisphere
Children (N=19)
Mean	548.5	0.83	−39	−47	−17	−41	−50	−18
Median	270.0	0.62	−40	−46	−16	−42	−49	−17
SEM	134.1	0.15	1.4	2.2	1.0
Teens (N=10)
Mean	772.2	0.95	−43	−43	−19	−46	−46	−20
Median	513.0	1.03	−44	−42	−20	−47	−45	−22
SEM	266.7	0.15	1.0	3.4	1.2
Adults (N=16)
Mean	887.6	0.83	−41	−40	−18	−43	−43	−20
Median	810.0	0.81	−40	−38	−18	−42	−41	−20
SEM	201.8	0.10	1.1	2.5	1.0
Left Hemisphere
Children (N=23)
Mean	664.4	0.79	39	−42	−18	43	−45	−20
Median	270.0	0.71	40	−40	−18	44	−43	−21
SEM	149.6	0.08	1.4	2.2	0.8
Teens (N=10)
Mean	396.9	0.71	40	−40	−18	44	−43	−21
Median	270.0	0.70	40	−39	−20	44	−42	−24
SEM	109.9	0.10	1.2	3.2	1.5
Adults (N=17)
Mean	408.2	0.57	40	−49	−16	44	−52	−18
Median	189.0	0.56	38	−46	−16	42	−49	−18
SEM	110.7	0.06	1.2	2.6	1.1

Notes: Regions of interest were defined by contrast of faces versus diverse objects (P≤ .005). Volume = mean total volume of the fusiform gyrus showing face > object activity for those participants that produced an FFA (i.e., mean does not include zero values for participants that did not produce an FFA). Peak % Signal = percent signal difference at the voxel showing the greatest difference in the faces versus diverse objects contrast. Talairach coordinates follow the convention of the Talairach and Tournoux atlas (Talairach & Tournoux, 1988). Positive coordinate values indicate left (x), anterior (y), and superior (z). Coordinates are provided for the voxel showing the greatest intensity difference within the fusiform gyrus (i.e., “hot spot”). MNI (SPM) equivalent coordinates were calculated using the GingerALE Convert Foci program (v. 2.1.1, http://www.brainmap.org/ale; Laird, et al., 2010; Lancaster, et al., 2007). SEM = standard error of the mean.