[Eeglablist] Brain Wave Frequency Ranges: Which definition is good or correct?

Nilo Sarraf nilo.sarraf at yahoo.com
Thu Dec 2 08:36:15 PST 2021

Great question Vic! Yes there are unfortunately some inconsistencies in the body of knowledge. I am not exactly sure of the historical data as to why but can say that the differences are not disastrous. 
For example some documents say Alpha bands start at 8HZ and some say it is at 9HZ etc. 
Regardless one way to get around that is when you write your research paper that you clearly indicate that this is one of the limitations of the study and that that , within your research design, you remain consistent. 
For example in my dissertation I stuck with Alpha band of 8-15 and remained consistent throughout my data collection in that definition Alpha waves as such 
Remember, the frequencies are definited by us humans just to be able to categorize what we referring to. 
How this helps Dr Nilo Sarraf 

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On Wednesday, December 1, 2021, 7:14 PM, vic roc via eeglablist <eeglablist at sccn.ucsd.edu> wrote:

Hi dear colleagues

I see lots of quite different frequency ranges defined in different studies
and references for the delta, theta, alpha, beta, and gamma brain waves.
These are very very different, and in many cases inconsistent and

Why is that so?

And which range is the correct one? At least, which range is the better
one? And why?

Thanks in advance.
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