Figure 3.

Findings of FFA volume and intensity related to age. The FFA ROIs were defined by the contrast of faces versus diverse objects and included all clusters within the fusiform gyrus producing face > object activation. A) Left and right hemisphere FFA volume (1 µl = 1 mm³) expressed as a continuous variable of age (ln = natural logarithm transformation). Linear regression lines and Pearson correlation coefficients (r, one-tailed) are provided. There was a significant positive correlation (solid line) with age in the volume of the right FFA using analysis that included only participants that produced a reliable FFA (open circles) and when participants that did not produce a reliable FFA (closed circles and dashed line) were included as a cluster size of zero. No significant age effect was observed in the left hemisphere. B) Mean percent BOLD signal within the left and right FFA ROIs expressed as a continuous variable of age for the faces versus diverse objects contrast Linear regression lines and Pearson correlation coefficients (r, two-tailed) are provided. Neither correlation was significant, although the left hemisphere FFA activation showed a trend toward a negative correction (P = .055).