Hi Steve,
Apologies for dragging this question on. Now i'm confused about whether to rescale the
PPheights of the 3 models at all. I got the 3 model waveforms(each with a different
stimulus duration as described in my previous post) from the design.mat and rescaled each
using their respective PPHeights. But i realized that the max and min values of the rescaled
model with the longer stimulus duration is lower than those for the shorter stimulus
duration models, even though all the PPheights are the same. Wouldnt this still affect the
comparibility of PEs of my rescaled models ? Since PE's are dependent on PPheights , i was
wondering if i should be using z-scores instead of PE's to compare the three models (i'm
assuming z-scores arent affected by the PP-Height) or perhaps correlation analysis.
-vish
|