[FieldTrip] need example code - activity of condition 1 contrasted with condition 2.

Frank Mei frank.ye.mei at gmail.com
Thu Feb 7 00:33:42 CET 2013

Hi All,

The tutorial here (http://fieldtrip.fcdonders.nl/tutorial/beamformer)
provides example of activity contrasted with baseline, but not activity of
condition 1 contrasted with condition 2.

Could someone kindly give some example code that contrasts two activities,
for example left vs right button pressing?

I am thinking about modifying the example code in the tutorial, by turn the
sourceDiff = sourcePost_con;
sourceDiff.avg.pow = (sourcePost_con.avg.pow - sourcePre_con.avg.pow) ./
into A:
sourceDiff = sourceLeft_con;
 sourceDiff.avg.pow = (sourceLeft_con.avg.pow - sourceRight_con.avg.pow) ./

or into B:
sourceDiff = sourceRight_con;
 sourceDiff.avg.pow = (sourceRight_con.avg.pow - sourceLeft_con.avg.pow) ./

Not sure if I should use "A" or "B", or something else.

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