[Eeglablist] Mu-rythm & Alpha Activity

[Tarik S Bel-Bahar]

Greetings Habib,

Here are some simple quick responses to your general questions.
Hoping this helps you a little on your way to an interesting project
and "answers", Cheers, Tarik


1. Learn how to use Google Scholar.Go to Google Scholar.
Search for EEG and mu, EEG and mu and alpha,
and read in full at least 20 articles from within the last 7 years. This way
you will have the minimal information about what has been done before and
current issues/methods. Just to get you started I have included 7
titles from Google Scholar
in point 5 below, but Please Do Not Stop with just these few articles
I pointed out.

2. I recommend that you do not experiment on yourself. There are too many
issues when you do that, such as your expectations and the way they may
influence your brain activity. There are many good reasons why scientists
find "multiple participants" from a "relatively homogenous" group, who are
"not told about the specific expectations of the study".
The scientist and the "subject or participant" should not be the same entity.
This idea touches on basic issues of the philosophy of science and epistemology,
but eeglablist is not the appropriate place for that extended discussion.

3. Please take the time familiarize yourself more with basic brain anatomy.
Basic systems involved with basic mental and bodily functions have
already been mapped to some degree.
Learn the names, areas, and basic known functions of most parts of the
brain from a basic textbook.
You can examine Cabeza & Nyberg's classic reviews, as well as the MANY
articles on the BrainMap database.
Another way to get a handle on "basic brain systems" is to take a look
at a review of "resting brain networks".
Also, if you have not, please read Steve Luck's Handbook of ERP
methods. Here's one chapter:
http://erpinfo.org/Members/ldtien/2010-boot-camp-materials/readings/Luck_APA_Handbook.pdf

4. You asked about what electrode positions should be "most active"
when one imagines movements.
Well, the best answer is the electrode locations found in previous
studies examining "imagined" vs. "actual" movement.
Again, Google Scholar is your friend, make use of it. But keep in
mind, the field is moving away from
working with EEG locations. Check the EEGLAB workshop videos and
powerpoint slides for an idea
why thinking about EEG in terms of "electrodes" is quickly getting
old. Check also recent eeglab lists posts from recent days
with other resources for learning about eeglab+ICA theory and methods.

5. Example titles on your topic from Google Scholar:

Differential effects of motor coordination context on EEG alpha/mu sub
band modulation.

Motor and attentional mechanisms involved in social
interaction—Evidence from mu and alpha EEG suppression

Translation of EEG Spatial Filters from Resting to Motor Imagery Using
Independent Component Analysis

 task-related responses in alpha/beta-band activity and BOLD in human
sensorimotor cortex: An EEG and fMRI study of motor imagery and
movements

EEG alpha activity reflects motor preparation rather than the mode of
action selection

Mirror activity in the human brain while observing hand movements: A
comparison between EEG desynchronization in the μ-range and previous
fMRI results
































On Wed, Oct 24, 2012 at 12:21 AM, Habib Paracha <ra_lums at hotmail.co.uk> wrote:
> Hi,
>
> I want to distinguish the Mu-rythms with the alpha activity of the brain.
> The question that I have in mind is that while detecting Mu-rhytms does the
> alpha activity of the whole brain changes when we imagine a particular
> movement or ii changes on just certain specific locations.
>
> Another Question is When I actually move my hands together with imagining
> the movement at which particular location(Electrode positions) will I be
> able to detect this.
>
> Regards,
>
> Habib
>
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