<p dir="ltr">Hi All</p>
<p dir="ltr">I didn't ever analyse this in great detail, but in the past i did often observe 2 distinct peaks within the alpha range in power spectra of healthy adult EEG. About a decade ago, i know the Klimesch group were publishing re what they termed alpha1 and alpha2 or upper and lower, or similar ....</p>
<p dir="ltr">Regards, Simon </p>
<div class="gmail_quote">On 18 Mar 2016 6:59 pm, "Makoto Miyakoshi" <<a href="mailto:mmiyakoshi@ucsd.edu">mmiyakoshi@ucsd.edu</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Dear Dorian,<div><br></div><div>No one is brave enough to claim that such subdivision is more or less arbitrary (or 'empirically determined')... I bet there is no solid neuroscientific evidence that suggests such subdivision.... of course I could be wrong!</div><div><br></div><div>Makoto</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jan 22, 2016 at 10:50 PM, Dorian Grelli <span dir="ltr"><<a href="mailto:dorian.grelli@gmail.com" target="_blank">dorian.grelli@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Hi EEGLAB users and developers,</div><div>Reading some EEG papers I've found that the Alpha and Beta waves are often divided into subbands. I'd really appreciate if someone can explain why there is this further divsion of the frequency spectrum and which are the differences between the subbands. I tried to look for some papers but I haven't found anything that is very clear and detailed.</div><div> </div><div>Thank you again for the support!</div><span><font color="#888888"><div> </div><div>Dorian</div></font></span></div>
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