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Re: EEG signals
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/
Pablo Faundez Hoffmann
Department of Acoustics
Frederik Bajers Vej 7 B5
phone: (+45) 96 35 87 28
fax: (+45) 98 15 21 44
email: pfh@xxxxxxxxxxxxxxxx <mailto:pfh@xxxxxxxxxxxxxxxx>
Vicsi Klara wrote:
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, PhD.
Head of the Laboratory of Speech Acoustics
Dept. of Telecommunications and Telematics
Budapest University of Technology and Economics
Sztoczek u. 2.
e-mail address: vicsi@xxxxxxxxxxx
home page: http://alpha.tmit.bme.hu/speech/