[FieldTrip] Auditory N1 Localization
Paul Czienskowski
paul_c at gmx.de
Sun Jul 31 13:33:15 CEST 2011
Dear all,
I am trying to localize auditory evoked N1 peaks with the
ft_dipolefitting function and BEM models. Occasionally the fit performed
quite well, in particular with the individual models, but sometimes it
did not. I have found about a quarter of the fits with the individual
models being quite insensible and about the half of the fits with an
standard model. Insensible means either pairs of symmetric dipoles at
virtually the same place or dipoles way too far away from the expected
positions.
I have executed the fit with a grid defined by the grey matter from the
SPM segmentations, restricted to one half of the interesting area - for
I am fitting symmetric dipoles. And I used the subsequent non-linear search.
I would appreciate if someone had some idea on how I might increase the
yield of the fitting.
Best regards and thanks in advance,
Paul Czienskowski
--
Paul Czienskowski
Björnsonstr. 25
12163 Berlin
Tel.: (+49)(0)30/221609359
Handy: (+49)(0)1788378772
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