[Eeglablist] head radius question

[Makoto Miyakoshi]

Dear Julia,

Sorry for slow response. We actually had a lab discussion about this
(and related) issue. Could you show us the example of suspicious
results?

Makoto

2012/5/29  <jekline at umich.edu>:
>
> Hi all. I am trying to make my digitized electrode locations work optimally
> with the dipole fit.
>
> I digitized all 256 of my electrodes with a Zebris digitizer. When I load
> my .sfp file containing the locations and plot them using topoplot, all the
> channel locations appear in a tight clump at the top of the head.
>
> I have been getting around this by clicking 'optimize head radius' in the
> GUI, but I'm concerned this is not the best way or even a correct way,
> since this changes the channel locations drastically.
>
> Does anyone have a better way to optimize the head radius of digitized
> locations? Thanks so much.
>
> -Julia
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-- 
Makoto Miyakoshi
JSPS Postdoctral Fellow for Research Abroad
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego