Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
fMRI region of interest (ROI) analysis. (a) Within-group comparisons of BOLD activity for both younger and older adults during perception in face-selective and motion-selective ROIs and (b) during imagery in face-selective and motion-selective ROIs. (c) Across-group comparisons of imagery selectivity index. Error bars: s.e.m. (*** P<0.0001; ** P<0.01; * P<0.05).
