[Eeglablist] power baseline

Mikołaj Magnuski imponderabilion at gmail.com
Thu May 29 03:21:13 PDT 2014

Hey Lars,

it depends on what you want to achieve. If you want to provide a baseline
that you  previously computed yourself - use the 'powbase' option. If you
want your baseline to be defined by a period in your epochs use the
'baseline' option.
28 maj 2014 19:37 <lars.rogenmoser at psychologie.uzh.ch> napisał(a):

> Dear all
> Is anyone familiar with spectral analysis in terms of pre-computing component
> measures? I was wondering whether someone could tell me how to include a
> power baseline in spectral analysis.
> the "std_spec" function suggests 'timerange'. However, there is furher
> information on FFTs discussing the baseline (
> http://sccn.ucsd.edu/eeglab/allfunctions/timefdetails.html)
> 'baseline'
> Spectral baseline end-time (in ms). Use NaN for no baseline removal{0}
> 'powbase'
> Baseline spectrum to log-subtract. 'baseline' parameter is ignored if this
> parameter is used {def|NaN->from data} This is useful only when you want to
> use a known baseline spectrum (e.g. from another condition) instead of
> using the actual mean baseline spectrum of the data. Otherwise, leave this
> out or specify as 'NaN' (not a number).
> Which one is the appropriate function?
> thanks, Lars
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