Hello-
This is a question of a FSL beginner I am
I want to demean the Reaction Time data to be included as a modulator of
relevant EVs in the 3 Custom format starting at the first leve
I have 12 subjects and each has 4 runs
A) I understand that demeaning equals mean RT - individual RT
(or does it matter if one does individual RT - mean RT)
in both cases mean=0?
B) the mean RT value used for demeaning is the mean RT for a particular
session of a particular subject, the mean RT of all sessions of a subject,
or the mean RT of all the sessions of all the subjects?
I've been looking to the web pages but could not find a response
many thanks and best wishes!
David
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