[Eeglablist] EEGLABTOOL PREPROCESSING

[Cedric Cannard]

Dear Second,

This is Biosemi data right? You have alphabetic labeling format and the default BEM channel template is expecting a different labeling format (e.g., A1 = Fp1).

You can try to load this location template instead: standard_alphabetic.elc in the same folder (eeglab\plugins\dipfit5.2\standard_BEM\elec)

Or you can convert them to the right labeling format, which I recommend as it facilitates the interpretation of results (F for frontal, P for parietal, etc.). 

See here to convert them (if you have 64-channel Biosemi):
https://urldefense.com/v3/__https://www.biosemi.com/pics/cap_64_layout_medium.jpg__;!!Mih3wA!DmKlCn9_c1q9t-vHalLdOfYoc0w-VFLhmQY_Wr3ToJTCyBs2QKLbGK2pxrUGNi4gGnUh5vbWEw4wSr_kG6xtT5Frfg$ 

Here are the other montages if you need: https://urldefense.com/v3/__https://www.biosemi.com/headcap.htm__;!!Mih3wA!DmKlCn9_c1q9t-vHalLdOfYoc0w-VFLhmQY_Wr3ToJTCyBs2QKLbGK2pxrUGNi4gGnUh5vbWEw4wSr_kG6y1Q1jnnw$ 


Cedric Cannard


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------- Original Message -------
On Monday, June 12th, 2023 at 9:42 PM, Soniya Usgaonkar via eeglablist <eeglablist at sccn.ucsd.edu> wrote:


> Hello Sir.
> I am using compiled version of EEGTOOL for preprocessing my dataset of EEG
> signals.its reading and importing the dataset . When i have to read channel
> locations i am giving channel .txt file as an input i am getting following
> error
> readlocs(): 'txt' format assumed from file extension
> 3 channel with the same label found and imported
> Channel lookup: no location for
> A1,A2,A3,A4,A5,A6,A7,A8,A9,A10,A11,A12,A13,A14,A15,A16,A17,A18,A19,A20,A21,A22,A23,A24,A25,A26,A27,A28,A29,A30,A31,A32,B1,B2,B3,
> B4,B5,B6,B7,B8,B9,B10,B11,B12,B13,B14,B15,B16,B17,B18,B19,B20,B21,B22,B23,B24,B25,B26,B27,B28,B29,B30,B31,B32,EXG1,EXG2,EXG3,EXG4,EXG5,EXG6,EXG7,EXG8,GSR1,GSR2,Erg1,Erg2,Resp,Plet,TempRemoving
> 15 channel(s)...
> i am not able to find out why this error . Can you please help sir?
> Regards and Thanks
> Second Usgaonkar,
> Assistant Professor,
> Department Of Information Technology,
> Goa college Of Engineering,
> Farmagudi-Goa
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