[Eeglablist] modifying head model for children in dipfit2
dorothy.bishop at psy.ox.ac.uk
Thu Dec 30 00:01:46 PST 2010
I am learning to use Dipfit2 with eeglab9_0_4_5s.
All works well if I accept default head model.
I would like, however, to modify the head model for children.
I followed the instructions for doing this that I found in:
I kept everything the same as for spherical 4 shell model, except that I subsituted a new head model file with altered vol.r values to correspond to 8 yr old child. I also, on advice from a colleague, made
Output coordinates default to MNI when you select custom model file, and I kept this.
I then went to Edit Channel locations to set head radius to be same as last vol.r value, i.e. 70.3
I then ran autofit dipoles , specifying 'fit bilateral dipoles'.
But I end up with single dipoles in the middle of the head.
I am not sure if the problem is with my model specification, or whether there is a bug, and would be grateful for advice.
Dorothy Bishop, Professor of Developmental Neuropsychology,
Dept of Experimental Psychology, University of Oxford, OX1 3UD.
tel +44 (0)1865 271369; fax +44 (0)1865 281255;
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