Normalization of absolute power

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shpratama
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Joined: Sun Jan 22, 2023 6:21 pm

Normalization of absolute power

Post by shpratama »

Hello James, what an awesome software you've made!

I read that the absolute power is calculated by the Interaxon api. However, it sometimes generates negative values of PSD. Have you ever conducted a normalization or other methods to the absolute powers to "lift" those values out of negative scale? If you've ever done one, I would love to learn more about the method. Thank you very much!
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James
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Joined: Wed Jan 02, 2013 9:06 pm

Re: Normalization of absolute power

Post by James »

I already do this in the app. The PSD range generated by the Interaxon API is in the approximate range of ~{-1:+1} and this is shifted to ~{0:100} for display.
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