[Eeglablist] Power Spectrum vs. Power Spectral Density

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Tue Jun 3 12:28:57 PDT 2014

Dear Brian,

Actualy I did not know the difference. According to wikipedia, spectral
density is something like spectra represented as cumulative distribution


I don't know though when it is more appropriate to use power spectra and
spectral density... someone in the list please help us.


On Wed, May 28, 2014 at 8:50 AM, Erickson <ericksonb.eng at gmail.com> wrote:

> List,
> The function "spectopo" produces output in units of 10log_10 (uV^2/Hz).
> This is power spectral density, as opposed to a power spectrum. Could
> anyone comment on the implications of interpreting, physiologically, the PS
> vs. the PSD of a neural signal? Thank you,
> - Brian
> Applied Brain and Cognitive Sciences Program
> Drexel University
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Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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