[Eeglablist] filter cutoff half-amplitude or half-power?

[Arnaud Delorme]

Dear Lucie,

the cut off in EEGLAB is none of these. The highpass filter cutoff frequency is defined as the lower edge frequency. The frequency response is plotted when you filter data.

Arno

On Oct 3, 2011, at 2:58 PM, Yangqing(Lucie) Xu wrote:

> Hi,
> 
> Does anyone know whether the highpass filter cutoff frequency that we enter in EEGLAB is a half-amplitude or half-power cutoff?  It's more likely to be half-amplitude, but I'm not 100% sure cuz it never specifies that in the program.
> 
> Thanks,
> 
> Lucie
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