**fScan Reference Manual, Chapter 2 (CmdLineOptions:Expr): detransient**
===== detransient -- Remove transient signals from time series =====
 **usage:  -expr detransient length [flag]**\\

DETRANSIENT censors out onset transient time course signals in each voxel.
It replaces the first LENGTH time values with the LENGTH+1 value.

  * LENGTH - number of onset time points (or seconds if FLAG&1) to remove (default: 4 secs)
  * FLAG - options (combine options by adding values)
    * 1 - LENGTH value is onset in seconds (default is time points)
    * 2 - Set ACTIVE array flags to 0 for onset transient time points (not yet implemented)
    * 4 - Set ACTIVE flags to 0 for offset (last) time point (not yet implemented)
    * 8 - Only set ACTIVE flags, do not modify time series data (not yet implemented)

**See Also:**\\
[[jvs:fscan|fScan Home]], 
[[jvs:fscan:manual|fScan Manual]], 
[[jvs:fscan:manual:chapter2|CmdLineOptions]], 
[[jvs:fscan:manual:chapter2:expression|Expression Command]], 
[[jvs:fscan:manual:help|Manual Help]]