Mean of Whole 3D Volumes

AFNI Message Board
1

I was trying to find the mean of whole 3D volumes in noise series. There was no transmit power such that we were collecting pure noise from the system ( phase array, receivers, preamps, etc). Is there a tool in AFNI for this purpose? 3dMean or 3dTstat can’t do this.

2

Is “3dBrickStat -mean” what you want?

3

Thanks, Daniel!

It seems 3dmaskave is an even better tool for this.

4

The programs have different uses.

3dBrickStat would return the overall mean from an
entire 4-D dataset, while 3dmaskave or 3dROIstats
would return one mean per volume, i.e. possibly a
time series of means.

  • rick