[Eeglablist] phase angle unit in ERPimage
arno at salk.edu
Mon Apr 26 14:52:18 PDT 2004
> I'd like too use ERPimage in order to classify the trials. I'd like to
> sort the different values that ERPimage produce:
> - I can sort the phase angle (phsangle) and the amplitude phase
> (phsamp) at any time, but I don't understand their units : what are
> the units of these vectors ? How can we convert the phase angle unit
> to radians ?
For the amplitude, the measure is unitless since the wavelet filters
have not been normalized (this will be fixed in a later version). For
the angle, the measure is already given in radian.
> - I'd like to sort the absolute power in each frequency before and
> after the stimulus: is it possible to sort this value at any time ?
Yes, use the option 'amsort'.
*Arnaud Delorme, Ph.D.*
Computational Neurobiology Lab, Salk Institute
10010 North Torrey Pines Road
La Jolla, CA 92037 USA
*Tel* : /(+1)-858-458-1927 ext 15/
*Fax* : /(+1)-858-458-1847/
*Web page *: www.sccn.ucsd.edu/~arno <http://www.sccn.ucsd.edu/%7Earno>
*To think upon*:
You don’t get to choose how you’re going to die. Or when. You can
only decide how you’re going to live. Now.
More information about the Eeglablist