[Eeglablist] Inter-Electrode Distance

[Simon Finnigan]

Dear All,

Would it be the craziest idea you've ever heard if I were to suggest you
just get a tape measure, place an electrode cap on a head, and measure the
inter-electrode distances?!

Simon


On Tue, Dec 18, 2012 at 7:25 PM, Iman M.Rezazadeh <irezazadeh at ucdavis.edu>wrote:

> Thanks Tim for your response ! and your two cents: ) ****
>
> **·        **Ok let me be clear. If we have electrode location file and
> fit anatomical head model ( not spherical ) the results will different .
> So, my question is " Is there ANY ANATOLICAL MODEL based on the electrode
> locations/labels that can help us to measure the inter-electrode distance?"I have done a test over 3 different individual scalp and there is +/- 4 cm
> difference between using spherical model and real head on average.****
>
> **·        ** ****
>
> Best,****
>
> Iman****
>
> *From:* Tim Mullen [mailto:mullen.tim at gmail.com]
> *Sent:* Tuesday, December 18, 2012 1:04 AM
> *To:* Iman M.Rezazadeh
> *Cc:* Makoto Miyakoshi; UCSD EEG List
> *Subject:* Re: Inter-Electrode Distance****
>
> ** **
>
> No worries, Iman -- just my two cents :) The email mailing list format is
> also not the easiest format to search and follow up on old posts. But I do
> think it helps reduce everyone's inbox clutter (and likely ensures you get
> a faster/better response) if new posts make clear how the given problem is
> not addressed by previously posted solutions.****
>
> ** **
>
> In the 2010 thread Arno describes a solution for the electrode distance on
> the scalp assuming a spherical head model, and this is implemented in the
> function elec_distance.m, which you referred to. Asking "does
> elec_distance.m work properly?" is something you can probably quickly
> answer yourself :) Do you have reason to think this function is not working
> properly? Is this not the solution you were hoping for? The more specific
> and clear your question, the more help can be provided by the community.**
> **
>
> ** **
>
> Tim****
>
> ** **
>
> On Mon, Dec 17, 2012 at 4:51 PM, Iman M.Rezazadeh <irezazadeh at ucdavis.edu>
> wrote:****
>
> Tim, I have   searched the forum and if you look at my email you can see
> that I mentioned the function name as well. Also what Steve pointed at is
> sth different ! ****
>
> Anyhow, thanks for the reminder for reading the archives and internet
> search J  and I would add reading more carefully the emails J ****
>
> Iman****
>
>  ****
>
> *From:* Tim Mullen [mailto:mullen.tim at gmail.com]
> *Sent:* Monday, December 17, 2012 4:18 PM
> *To:* Makoto Miyakoshi
> *Cc:* Iman M.Rezazadeh; UCSD EEG List
> *Subject:* Re: Inter-Electrode Distance****
>
>  ****
>
> Iman, a general rule of forums and mailing lists (such as EEGLAB) is to
> first search the forum/list archives for a solution. In this case, the
> question has been addressed at least once before: i.e. search for
> 'inter-electrode distance' in the subject lines for 2010 --
> http://sccn.ucsd.edu/pipermail/eeglablist/2010/subject.html. If you can't
> find a solution in the archives (or after a little internet searching),
> then by all means post to the list :)****
>
>  ****
>
> Also, I just saw that Steve noted this topic came up a few days ago on the
> list...****
>
>  ****
>
> Tim****
>
>  ****
>
> On Mon, Dec 17, 2012 at 3:54 PM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
> wrote:****
>
> Dear Iman,****
>
>  ****
>
> Why don't you try it first since the function is already there :-)****
>
>  ****
>
> Makoto****
>
>  ****
>
> 2012/12/17 Iman M.Rezazadeh <irezazadeh at ucdavis.edu>****
>
>  ****
>
> Hi,****
>
> Could you please let me know how can I measure the inter-electrode
> distance on the head surface? Does elec_distance.m woeks properly? ****
>
>  ****
>
> Iman M.Rezazadeh, PhD****
>
> Postdoctoral Research Fellow****
>
> Center for Mind and Brain****
>
> University of California, Davis****
>
> irezazadeh at ucdavis.edu****
>
> Cell:310-490-1808****
>
> Skype: Imanmr****
>
>  ****
>
>
>
> ****
>
>  ****
>
> --
> Makoto Miyakoshi
> JSPS Postdoctral Fellow for Research Abroad
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego****
>
>
>
> ****
>
>  ****
>
> --
> ---------  αντίληψη -----------****
>
>
>
> ****
>
> ** **
>
> --
> ---------  αντίληψη -----------****
>
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