fScan Reference Manual, Chapter 2 (CmdLineOptions): lowfreq

Lowfreq -- Remove slow temporal fluctuations (detrend)

usage: -lowfreq nnodes flag

For DETRENDING, a smooth curve is generated for each pixel timecourse as a cubic spline interpolation through NNODES points. The nodes are uniformly spaced along the timecourse; their values are calculated piecewise based on the FLAG argument.

See Also:
fScan Home, fScan Manual, CmdLineOptions, Manual Help