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

robert lawson robert at eegworks.com
Thu Dec 2 11:32:31 PST 2021


There have been multiple studies of empirically derived EEG bands. Here's
one:

"Identifying Robust and Sensitive Frequency Bands for Interrogating Neural
Oscillations"

https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ncbi.nlm.nih.gov_pmc_articles_PMC2871966_&d=DwIBaQ&c=-35OiAkTchMrZOngvJPOeA&r=kB5f6DjXkuOQpM1bq5OFA9kKiQyNm1p6x6e36h3EglE&m=LUV_FRrZ43YuTiFyqDjGyRwuQV44JFgVpkfxQZ7XdO2p9-OBvfH3mwVcnsiz47rw&s=_KpxYsack5x6gdyOYgYo9xpKUFB5szjpt1n2Ful6B10&e= 


On Thu, Dec 2, 2021, 12:19 PM Nilo Sarraf via eeglablist <
eeglablist at sccn.ucsd.edu> wrote:

> 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
>
>
> Sent from Yahoo Mail for iPhone
>
>
> 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
> controversial.
>
> Why is that so?
>
> And which range is the correct one? At least, which range is the better
> one? And why?
>
> Thanks in advance.
> Best,
> Vic
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