[Eeglablist] Problem with Channel Locations (Makoto's Preprocessing Pipeline)

[Mahjabeen Rahman]

Hello everyone,

I am a novice EEG researcher and not very good at coding. We are using a Cognionics system of 10-10 configuration (64 channels). The device manufacturer said,  the channel locations are already in the raw data, so no need to import any file.  When I try to select BEM DIPFIT model and opt. head center, then I am getting the following:
I dont know if its something to worry about. Our raw data is in .bdf format.

"readlocs(): 'elc' format assumed from file extension
Reading file (lines): 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 698
readlocs(): 'elc' format assumed from file extension
Reading file (lines): 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 698
Radius values: 97.2255 (mean) +/- 11.2354 (std)
Optimizing center position...
Wobble too strong ( 12%)! Re-centering data on (1.19058,-16.0254,2.35827)
Wobble (5.7%) after centering data on (1.19058,-16.0254,2.35827)
Note: automatically convert XYZ coordinates to spherical and polar
EEG checkset note for expert users: Noze direction now set to default +X in EEG.chanlocs and EEG.dipfit."

 After this message, I  thought I would check if it converted to BEM. So I tried edit=>channel locations, it shows coordinates in BESA.   I am really stuck here. I think, for this , I am also facing problems in later steps (e.g. AMICA,DIPFIT). If anyone with experience helps, I would be grateful.

P.S. If I go with BESA, would that be a problem ?

Thanks in advance,
Mahjabeen Rahman
PhD Student
Industrial Engineering & Management Systems
University of Central Florida