Hi Bryce,
You can do this very easily and quickly in afni with little preparation
using InstaCorr (instant correlations).
See the "InstaCorr" section starting on slide 6 of the instastuff.pdf
handout:
[
afni.nimh.nih.gov]
In your case, use (Misc Opts -> Seed Rad) in the "Setup ICorr" menu.
You can define the seed time series based on a sphere at the cross hairs.
Then just click around, doing instant correlation analyses.
- rick