# Tag Info

## New answers tagged eeg

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And the power spectral density is the Fourier transform of the autocorrelation. I don't know about EEG data, but you can compute autocorrelation either in time domain or frequency domain. For instance if you need only a few samples of the autocorrelation it may be computed more efficiently using inner products than it would by $FFT^{-1}(|FFT(x)|^2)$. You ...

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