[Eeglablist] ICA in clinical populations

[Sharma, Anuradha]

Dear All,

I have applied ICA to auditory oddball data in a group of healthy controls and schizophrenia patients to try and isolate the P3b (posterior) and P3f (frontal) components. The problem is that although I get two very clean components in most subjects in the control group, in the patients due to distorted topographies (which leads to different dipole localizations), time courses etc., it has been very hard uptil now to find the corresponding/comparable components in the patient group. Has anybody had a similar problem when using clinical populations, are there any reccommendable clustering strategies to find corresponding components in such populations?

Would be thankful for any tips...

Best,
Anuradha