Baseline Normalisation

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Debanjan Borthakur

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May 8, 2020, 5:11:53 PM5/8/20

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Hi, Mike

I have two groups. The signal I am analysis is skin conductance. The protocol has several conditions and a baseline. I need to compare skin conductance across conditions as well as between the two groups. If I zscore the signals , the group comparison will not be possible as it will remove the differences. But as you suggested in your book, if I do z transform where raw data are scaled to standard deviation units relative to the raw data
during the baseline period. I assume , my comparison between the groups will remain valid and the actual difference between the groups wont be effected? Please let me know.

Mike X Cohen

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May 9, 2020, 1:21:07 AM5/9/20

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Hi Debanjan. In principle, that's fine. But I would be concerned about too little variability in the conductance signal. Perhaps percent change might be a better option.

btw, this google-group is now defunct. You can use discuss.sincxpress.com.

Mike

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