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--</style><p style="margin-bottom:0in">Dear eeglablist,</p>
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<p style="margin-bottom:0in">I am source localizing with dipfit2 in
eeglab 11.0.3.1b with a 128 biosemi system and have renamed my
channel labels to their closest match in the 10-20 system. After
re-naming, I loaded the standard MNI channel locations through 'look
up locs' under 'edit:channel locations' in the GUI so I could use
them in dipfit. I thought that if I did this, there would be no
need for me to co-register my channels with the dipfit head model (as
the tutorial suggests). However, if I do not co-register, (by
selecting 'no coreg' in the head model settings) my dipole locations
appear to be rotated 90 degrees clockwise (when viewed from above), relative to their scalp maps.
If I do co-register the standard MNI channel locations, and warp the
montage, the dipole locations appear where they are expected (I
think). I tested this by fitting dipoles to what I believe to be an
eye artifact in a few datasets. Without co-registration, the dipoles
appeared in the right inferior temporal lobe; with co-registration
(and warping), the dipoles appeared in the left eye (as I expected).
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<p style="margin-bottom:0in">Has anyone else encountered this? Am I
missing an important step when using standard MNI locations without
co-registration? Is co-registration and warping required even when
using the standard MNI locations? Any help would be greatly
appreciated.</p>
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<p style="margin-bottom:0in">Thanks in advance,</p>
<p style="margin-bottom:0in">James</p>
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