mgh.harvard.edu] on behalf of MCLAREN, Donald
[mclaren.don...@gmail.com]
Sent: Monday, May 05, 2014 11:20 AM
To: Freesurfer support list
Subject: Re: [Freesurfer] comparing two conditions with disproportionate number
of trials
For the contrast A>B, the number of trials is not considered. When y
For the contrast A>B, the number of trials is not considered. When you
contrast A and B, you are assessing the mean response to trials of
condition A to the mean response to trials of condition B. You wouldn't
want to weight this by the number of trials as then the contrast would not
make sense.
T
Dear FS experts,
I have a question about the way contrasts work in an event-related design. I am
wondering if freesurfer is doing some sort of weighing when it compares two
different conditions with incomparable number of trials. For example condition
A is represented by 10 trials in the paradi
