[Eeglablist] (no subject)

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Fri Oct 9 10:46:05 PDT 2015

```Dear Jason,

> These two sentence lead me to ask: why alpha band is 10 Hz not between 8
and 13 Hz?

10Hz is in 8-13Hz, so no problem to say 10Hz is alpha. It's trivial.

By the way I did not write the wiki or manual, so don't assume that I'm
talking as an author. I'm just a volunteer and a SCCN post-doc.

Makoto

On Fri, Oct 9, 2015 at 3:04 AM, jason roger <jasonroger8 at gmail.com> wrote:

> Dear Makoto,
>
>
> Dear Jason,
>>
>> delta = =1-4
>> theta == 4-8
>> alpha == 8-13
>> beta == 13-30
>> gamma > 30
>>
>> These frequency segmentation comes from historical reason. I agree with
>> Pal, it's better to take mean or max etc. within the rages to obtain
>> representative values.
>>
>
> You are right; if we need to mention any wave, we need to determine it
> using its correct band range frequency, for instacne, beta band = 13-30.
> But the reason behind my question is that I observed in EEGLAB tutorial
> (Chapter 08: Plotting ERP images) that is located in the link:
> http://sccn.ucsd.edu/wiki/Chapter_08:_Plotting_ERP_images
>
> Where there is a sentence"*choose a channel with high alpha band power
> (near 10 Hz)*" above the figure. and under the figure, there is another
> sentence "*The plot above shows that alpha band power (e.g., at 10 Hz) is
> concentrated over the central occipital scalp*".
>
> These two sentence lead me to ask: why alpha band is 10 Hz not between 8
> and 13 Hz?
>
> Regards,
> Jason
>
>
>>
>> Makoto
>>
>> On Sat, Oct 3, 2015 at 2:14 AM, jason roger <jasonroger8 at gmail.com>
>> wrote:
>>
>>> Hi all,
>>>
>>> To be sure form the information I have, in the attached file, there are
>>> 3 scalps are associated with three different frequencies (6 Hz, 10 Hz, and
>>> 22 Hz).
>>>
>>> ​
>>>  example.png
>>> ​
>>>
>>> Are those frequencies reflect the waves/bands Theta, Alpha, Beta
>>> consequently? In other words, if I'm interested studying Theta band, can I
>>> consider 6Hz to be its value, and 10Hz as a value of Alpha, while 22Hz for
>>> Beta?
>>>
>>> Thanks in advance.
>>>
>>> Jason
>>>
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>>
>>
>>
>> --
>> Makoto Miyakoshi
>> Swartz Center for Computational Neuroscience
>> Institute for Neural Computation, University of California San Diego
>>
>
>

--
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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