[Eeglablist] ICA component potentially related to tongue movement?

[Makoto Miyakoshi]

Dear Jyrki,

My humble opinion. IC3 in Production condition has a nice bipolar
topography. I would say it is an EEG source.

Makoto


2013/10/9 Jyrki Tuomainen <j.tuomainen at ucl.ac.uk>

> Hi all,
> our group has collected data in three different conditions (passive
> listening of syllable [da] (1 sec between trials), overt production of
> [da] in synchrony while listening to [da], and tapping in synchrony when
> listening to [da]). The idea is to look at how simultaneous motor
> activity affects N1/P2 responses to compare the effect of these
> manipulations on brain stem responses (especially FFR).
>
> The cortical data for some subjects is really noisy especially at around
> the stimulus onset), and my take is that simultaneous motor activity
> might synchronise eye movements with stimulus presentation on many
> trials. I've used ICA to track these down, and based on the component
> maps this seems to be the case. However, as tongue movement creates a
> largish dipole I was wondering whether component 3 in the production
> condition might reflect this rather than alpha type oscillatory activity
> (which is suggested in the component map). I'd be grateful for any
> comments on this!
> The plots are available at
> http://www.homepages.ucl.ac.uk/~sslyjjt/ICA/ICA_01_prod_perception.pdf
>
> Thanks in advance, best wishes, -Jyrki
>
> --
> Jyrki Tuomainen
> University College London
> UCL Speech Hearing and Phonetic Sciences
> Division of Psychology and Language Sciences, Faculty of Brain Sciences
> Chandler House, 2 Wakefield Street, London WC1N 1PF, UK
> Tel: +44 (0)20 7679 4214 (Internal 24214), Fax: +44 (0)207 679 4238
> j.tuomainen at ucl.ac.uk,
> http://www.ucl.ac.uk/psychlangsci/staff/academicstaff
>
>
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> To unsubscribe, send an empty email to
> eeglablist-unsubscribe at sccn.ucsd.edu
> For digest mode, send an email with the subject "set digest mime" to
> eeglablist-request at sccn.ucsd.edu
>



-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20131009/f137e7c3/attachment.html>