Dear AFNI minds,

I would like to obtain a quick snapshot of voxelwise BOLD signal collected in a continuous 15 minute scan with a 2 s TR (i.e. 450 timepoints in the 3d+time dataset). I would like to simply create a "binned" dataset where data are binned in (averaged across successive) 12 s (6 reps) increments. This would effectively reduce the time series from 450 points on the horizontal axis down to 75 points, for a more lucid quick look in a graph.

I know you can use 3dCalc to just average across a whole dataset, but I do not know the expression to average across every 6 volumes and concatenate these successive averages.

Thanks in advance,

Jim