Hi guys,
I want to calculate the % variance explained by each of my GLM regressors for a given voxel coordinate (x,y,z).
From looking through old posts i found this equation, but just wanted to check ive got it right and im using the right files.
a^2 var(EV)
----------------
var(Y)
Here data = Y, a = PE
So I square the PE value for that voxel, multiply it by the variance of the regressor timeseries taken from the design.mat and then divide the result by the variance of the filtered_func_data timeseries in that voxel?
Many thanks for any help
Steve
|