[FieldTrip] equal number of trials across conditions
Vitória Magalhães Piai
vitoria.piai at gmail.com
Sun May 20 11:53:58 CEST 2012
I'm working on a dataset (ERPs, but this is not that relevant for the
question, I believe) for which one condition elicited more errors than
I'd like to have both conditions with the same number of trials in the
Ideally, I'd throw away the noisiest trials from one condition, instead
of just start throwing away trials at random.
I was thinking of using z-scores for that but I was wondering if any of
you has already done this before and how. What would be the best way to go?
Take the mean amplitude across all trials (collapsed over condition or
not?) and calculate the z-score for each trial individually? Then take
out the one with the largest scores? How does this approach sound?
Does FT keep information about the variance for each trial somewhere in
the output of an artefact rejection function? Or would I have to compute
I'd appreciate any suggestions or feedback.
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