[FieldTrip] beamformer

Frank Mei frank.ye.mei at gmail.com
Wed Jul 3 21:03:35 CEST 2013

Hello FieldtripList,

In the beamformer tutorial (
http://fieldtrip.fcdonders.nl/tutorial/beamformer), the contrast of
(post-pre)/pre was calculated. I am wondering why can't one just
calculate (post-pre), instead.

Could someone explain that?

Ye Mei
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