fScan Reference Manual, Chapter 2 (CmdLineOptions:Expr): Sine
usage: -e sine period phase amplitude
The SINE command generates an image data set with the same dimensions as the current active data set, setting the image intensity at each voxel to vary as a sinusoid in time, according to the function:
Value = Amplitude * sin(2*pi*(T-Phase)/Period)
Where T is the time point index and “pi” is 3.1415926.
T, Period, and Phase are all in units of time points (not secs).
Default parameter values are: Amplitude=100 and Phase=0.