Re: EEG signals

[Pablo Hoffmann <pfh@xxxxxxxxxxxxxxxx>]

Dea Vicsi,

I have an acoustical background, and for my master thesis I worked along 
with a friend from biomedical engineering in a topic very close to the 
task you have. We measured EEG signals on people while they were 
performing a sound localization task in an anechoic environment. We 
could actually observe some components, such as the N100 (or N1), in the 
event-related potential responses we obtained. We analyzed the data by 
looking at how the latency and amplitude of this component changed as a 
function of sound direction. The idea was to see whether there was any 
correlation between the direction of the sound and how these parameters 
varied. It was a very interesting experience but we couldn't observe any 
real specific pattern. If you are interested on further details about 
this thesis please contact me.
For more information on this topic I suggest you to a look at the work 
done by Kalle Palomäki at Helsinki University of Technology. His 
doctoral research was related to cortical processing of spatial sound. 
Here is a link http://lib.tkk.fi/Diss/2005/isbn9512277174/

regards,

Pablo

Pablo Faundez Hoffmann
Ph.D. Student
Department of Acoustics
Aalborg University
Frederik Bajers Vej 7 B5
DK-9220 Aalborg
Denmark

office: B4-201
phone: (+45) 96 35 87 28
fax: (+45) 98 15 21 44
email: pfh@xxxxxxxxxxxxxxxx <mailto:pfh@xxxxxxxxxxxxxxxx>

Vicsi Klara wrote:
> Dear Colleagues,
>
> I am the head of a Laboratory of Speech Acoustics. We have got a task, 
> the object of which is unfamiliar to us. This task would be to reason 
> out if it is possible to find out, by analysis of the EEG signals from 
> a person, which sound source he is concentrates on, in a multi-source 
> space. Also, we had to turn out how the brain reflects the changes in 
> the location of the sound-source, or the switching the attention from 
> one to another sound source.
> We are going to run the experiments in our an-echoing chamber.
> Have somebody prepared similar experiments? Do you think, it is 
> possible  to get usable answers to the above questions by this way?
> Or can somebody advice other methods to study these problems?
>
> Waiting for your advices
> Thank you in advance
>
> Klara Vicsi
>
> --------------------------------------------------
> Klara Vicsi, PhD.
> Head of the Laboratory of Speech Acoustics
> Dept. of Telecommunications and Telematics
> Budapest University of Technology and Economics
> Budapest, XI.
> Sztoczek u. 2.
> H-1111
>
> Hungary
> tel:36-1-4631940, tel:36-1-4631886
> mobil:304743503
> fax:36-1-3720403
> e-mail address: vicsi@xxxxxxxxxxx
> home page: http://alpha.tmit.bme.hu/speech/