[Eeglablist] Question about estimating Signal to Noise Ratio

Allan Campopiano alcampopiano at gmail.com
Wed Jan 8 14:20:49 PST 2014


Hello,

One way to estimate noise in the data is to use Schimmel's (1967) +/-
reference method which inverts every other trial before averaging. This
cancels out the ERP, leaving the event-unrelated activity (noise) behind.

Check out Joe Dien's EP toolkit which includes Schimmel's measure as a
quality control feature. Also, the toolkit's documentation clearly explains
the calculations that are involved.



*Allan Campopiano* | MA Candidate
Laboratory of Cognitive and Affective Neuroscience
Brock University | Psychology Department | 500 Glenridge Ave.
St. Catharines, ON Canada L2S 3A1
*T* 905-688-5550 x3451 *F *905-688-6922


On Mon, Dec 23, 2013 at 4:19 AM, chaitanya bhavaraju <
chaitanya1686 at gmail.com> wrote:

> Dear List,
>
> I would like to know about the following:
> How to estimate the Signal to Noise Ratio for EEG signal?
> Can we estimate that for each channel?
> Thank you,
>
> Best wishes,
> Chaitanya
>
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