Dear List,<br><br>First, one quick question: Is there a way to search the EEGLAB list with key terms? At the moment I can only see how to browse complete past archives.<br><br>Second, the longer question: I use a Neuroscan quik-cap 64-channel with synamps-1, with 8 additional electrodes (total 72) and I am having problems reading channel locations. <br>
<br>From the neuroscan software I can save the .asc file with channel positions that I provide at the end of this email (see at the bottom of the email). However, when I try to read it using the GUI Edit channel Info>Read Locations, I get the error I also provide below. <br>
<br>Question 1: Is there a way I can read this location file?<br>Question 2: If not, for 62 of the standard cap electrodes I could get the standard locations. For some of the additional electrodes (numbers 31-32, 65-72), I suppose if I change their names to standard names, their locations could be read from a standard file? I suppose 32 and 69-71 must have standard locations/names; 65-68 are attached at the internal and the external canthus of each eye to obtain horizontal ocular movements) <br>
Question 3: Two electrodes (31 (the third bipolar cap electrode) and 72 are left free to record power line noise). As these electrodes do not have a standard location (they are attached over the central/frontal part of the cap) and are not useful for standard purposes I will just remove them (unless someone suggests it would be useful to include them in ICA even though they do not have a fixed location?)<br>
<br>Many thanks for any help you could provide!<br><br>Best wishes,<br>Yannis<br><br><br><br><br>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>
%% The error message when trying to read the locations file (see below for the locations file)<br>
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br><br>IMPORTANT: After importing/modifying data channels, you must close<br>the channel editing window for the changes to take effect in EEGLAB.<br>TIP: Call this function directy from the prompt, ">> pop_chanedit([]);"<br>
to convert between channel location file formats<br>readlocs(): 'asc' format assumed from file extension<br>Reading file (lines): 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 224<br>
??? Error using ==> readlocs>load_file_or_array at 624<br>readlocs(): cannot find the named file or variable, check syntax<br><br>Error in ==> readlocs at 405<br> array = load_file_or_array( filename, g.skiplines);<br>
<br>Error in ==> readneurolocs at 55<br> chanlocs = readlocs('128.DAT', 'filetype', 'custom', 'format', { 'labels' 'ignore' '-Y' 'X' 'Z' });<br>
<br>Error in ==> readlocs at 361<br> eloc = readneurolocs( filename );<br><br>Error in ==> pop_chanedit at 664<br> [chans] = readlocs(tmpargs{:});<br> <br>??? Error using ==> waitfor<br>
Error while evaluating uicontrol Callback<br><br><br>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>%% The locations file from Neuroscan<br>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br><br>;SCAN 4.0 ASCII Channel Description File<br>;<br>;Line format:<br>
;#<channel number> <label><br>;or:<br>;<display page> <channel number> <pos x0> <pos y0> <pos x1> <pos y1><br>
;<br>;A semicolon at the first column indicates a comment.<br>;<br>#1 O2<br>#2 O1<br>#3 OZ<br>#4 PZ<br>#5 P4<br>#6 CP4<br>#7 P8<br>#8 C4<br>#9 TP8<br>#10 T8<br>#11 P7<br>#12 P3<br>#13 CP3<br>
#14 CPZ<br>#15 CZ<br>#16 FC4<br>#17 FT8<br>#18 TP7<br>#19 C3<br>#20 FCZ<br>#21 FZ<br>#22 F4<br>#23 F8<br>#24 T7<br>#25 FT7<br>#26 FC3<br>#27 F3<br>#28 FP2<br>#29 F7<br>#30 FP1<br>#31 LineNoise<br>
#32 VEOG<br>#33 PO5<br>#34 PO3<br>#35 P1<br>#36 POZ<br>#37 P2<br>#38 PO4<br>#39 CP2<br>#40 P6<br>#41 PO6<br>#42 CP6<br>#43 C6<br>#44 PO8<br>#45 PO7<br>#46 P5<br>#47 CP5<br>#48 CP1<br>#49 C1<br>
#50 C2<br>#51 FC2<br>#52 FC6<br>#53 C5<br>#54 FC1<br>#55 F2<br>#56 F6<br>#57 FC5<br>#58 F1<br>#59 AF4<br>#60 AF8<br>#61 F5<br>#62 AF7<br>#63 AF3<br>#64 FPZ<br>#65 HEOGL<br>#66 HEOGR<br>#67 HEOG_IL<br>
#68 HEOG_IR<br>#69 M1<br>#70 M2<br>#71 Nose<br>#72 50Hz<br>0 1 0.560 0.835 0.614 0.898<br>0 2 0.401 0.831 0.455 0.893<br>0 3 0.488 0.828 0.542 0.890<br>0 4 0.485 0.646 0.539 0.708<br>
0 5 0.607 0.651 0.661 0.713<br>0 6 0.623 0.568 0.677 0.630<br>0 7 0.729 0.709 0.783 0.771<br>0 8 0.629 0.489 0.683 0.551<br>0 9 0.778 0.611 0.832 0.673<br>
0 10 0.791 0.492 0.845 0.554<br>0 11 0.246 0.727 0.300 0.789<br>0 12 0.362 0.659 0.416 0.721<br>0 13 0.347 0.576 0.401 0.638<br>0 14 0.485 0.565 0.539 0.627<br>
0 15 0.485 0.487 0.539 0.549<br>0 16 0.626 0.403 0.680 0.465<br>0 17 0.786 0.371 0.840 0.433<br>0 18 0.190 0.625 0.244 0.687<br>0 19 0.339 0.492 0.393 0.554<br>
0 20 0.482 0.403 0.536 0.465<br>0 21 0.482 0.313 0.536 0.375<br>0 22 0.612 0.316 0.666 0.378<br>0 23 0.737 0.261 0.791 0.323<br>0 24 0.171 0.501 0.225 0.563<br>
0 25 0.187 0.368 0.241 0.430<br>0 26 0.341 0.409 0.395 0.471<br>0 27 0.355 0.316 0.409 0.378<br>0 28 0.580 0.137 0.634 0.199<br>0 29 0.227 0.261 0.281 0.323<br>
0 30 0.385 0.137 0.439 0.199<br>0 31 0.251 0.829 0.305 0.891<br>0 32 0.227 0.113 0.281 0.175<br>0 33 0.341 0.766 0.395 0.829<br>0 34 0.413 0.750 0.467 0.810<br>
0 35 0.416 0.647 0.470 0.709<br>0 36 0.488 0.730 0.542 0.792<br>0 37 0.547 0.643 0.601 0.705<br>0 38 0.562 0.734 0.616 0.797<br>0 39 0.555 0.565 0.609 0.627<br>
0 40 0.666 0.678 0.720 0.740<br>0 41 0.625 0.770 0.678 0.832<br>0 42 0.694 0.582 0.748 0.644<br>0 43 0.704 0.489 0.758 0.551<br>0 44 0.643 0.862 0.697 0.923<br>
0 45 0.336 0.859 0.390 0.919<br>0 46 0.306 0.683 0.360 0.745<br>0 47 0.274 0.594 0.328 0.656<br>0 48 0.417 0.568 0.471 0.630<br>0 49 0.414 0.489 0.468 0.551<br>
0 50 0.555 0.487 0.609 0.549<br>0 51 0.555 0.406 0.609 0.468<br>0 52 0.702 0.394 0.756 0.456<br>0 53 0.263 0.498 0.317 0.560<br>0 54 0.414 0.409 0.468 0.471<br>
0 55 0.547 0.319 0.601 0.381<br>0 56 0.675 0.299 0.729 0.361<br>0 57 0.265 0.397 0.319 0.459<br>0 58 0.420 0.325 0.474 0.387<br>0 59 0.577 0.220 0.631 0.282<br>
0 60 0.669 0.177 0.723 0.239<br>0 61 0.290 0.301 0.344 0.363<br>0 62 0.295 0.180 0.349 0.242<br>0 63 0.385 0.232 0.439 0.294<br>0 64 0.482 0.131 0.536 0.193<br>
0 65 0.165 0.186 0.219 0.248<br>0 66 0.794 0.171 0.848 0.233<br>0 67 0.314 0.055 0.368 0.117<br>0 68 0.656 0.055 0.709 0.117<br>0 69 0.181 0.706 0.235 0.768<br>
0 70 0.799 0.718 0.853 0.780<br>0 71 0.482 0.021 0.536 0.083<br>0 72 0.715 0.825 0.769 0.887<br>1 1 0.032 0.032 0.161 0.161<br>1 2 0.194 0.032 0.323 0.161<br>
1 3 0.355 0.032 0.484 0.161<br>1 4 0.516 0.032 0.645 0.161<br>1 5 0.677 0.032 0.806 0.161<br>1 6 0.839 0.032 0.968 0.161<br>1 7 0.032 0.194 0.161 0.323<br>
1 8 0.194 0.194 0.323 0.323<br>1 9 0.355 0.194 0.484 0.323<br>1 11 0.516 0.194 0.645 0.323<br>1 12 0.677 0.194 0.806 0.323<br>1 13 0.839 0.194 0.968 0.323<br>
1 14 0.032 0.355 0.161 0.484<br>1 15 0.194 0.355 0.323 0.484<br>1 17 0.355 0.355 0.484 0.484<br>1 18 0.516 0.355 0.645 0.484<br>1 19 0.677 0.355 0.806 0.484<br>
1 20 0.839 0.355 0.968 0.484<br>1 21 0.032 0.516 0.161 0.645<br>1 22 0.194 0.516 0.323 0.645<br>1 25 0.355 0.516 0.484 0.645<br>1 27 0.516 0.516 0.645 0.645<br>
1 33 0.677 0.516 0.806 0.645<br>1 34 0.839 0.516 0.968 0.645<br>1 35 0.032 0.677 0.161 0.806<br>1 36 0.194 0.677 0.323 0.806<br>1 37 0.355 0.677 0.484 0.806<br>
1 38 0.516 0.677 0.645 0.806<br>1 40 0.677 0.677 0.806 0.806<br>1 41 0.839 0.677 0.968 0.806<br>1 44 0.032 0.839 0.161 0.968<br>1 45 0.194 0.839 0.323 0.968<br>
1 46 0.355 0.839 0.484 0.968<br>2 9 0.032 0.032 0.161 0.161<br>2 10 0.194 0.032 0.323 0.161<br>2 16 0.355 0.032 0.484 0.161<br>2 23 0.516 0.032 0.645 0.161<br>
2 26 0.677 0.032 0.806 0.161<br>2 28 0.839 0.032 0.968 0.161<br>2 30 0.032 0.194 0.161 0.323<br>2 39 0.194 0.194 0.323 0.323<br>2 40 0.355 0.194 0.484 0.323<br>
2 42 0.516 0.194 0.645 0.323<br>2 43 0.677 0.194 0.806 0.323<br>2 47 0.839 0.194 0.968 0.323<br>2 48 0.032 0.355 0.161 0.484<br>2 49 0.194 0.355 0.323 0.484<br>
2 50 0.355 0.355 0.484 0.484<br>2 51 0.516 0.355 0.645 0.484<br>2 52 0.677 0.355 0.806 0.484<br>2 53 0.839 0.355 0.968 0.484<br>2 54 0.032 0.516 0.161 0.645<br>
2 55 0.194 0.516 0.323 0.645<br>2 56 0.355 0.516 0.484 0.645<br>2 57 0.516 0.516 0.645 0.645<br>2 58 0.677 0.516 0.806 0.645<br>2 59 0.839 0.516 0.968 0.645<br>
2 60 0.032 0.677 0.161 0.806<br>2 61 0.194 0.677 0.323 0.806<br>2 62 0.355 0.677 0.484 0.806<br>2 63 0.516 0.677 0.645 0.806<br>2 64 0.677 0.677 0.806 0.806<br>
2 65 0.839 0.677 0.968 0.806<br>2 66 0.032 0.839 0.161 0.968<br>2 67 0.194 0.839 0.323 0.968<br>2 68 0.355 0.839 0.484 0.968<br>2 69 0.516 0.839 0.645 0.968<br>
2 70 0.677 0.839 0.806 0.968<br>2 71 0.839 0.839 0.968 0.968<br>3 31 0.091 0.167 0.455 0.833<br>3 72 0.545 0.167 0.909 0.833<br><br><br>-- <br>
<br style="color:rgb(102,102,102);background-color:rgb(255,255,255)">
<b><span style="color:rgb(102,102,102);background-color:rgb(255,255,255)">Yannis Paloyelis, PhD CPsychol</span></b><br style="color:rgb(102,102,102);background-color:rgb(255,255,255)">
<span style="color:rgb(102,102,102);background-color:rgb(255,255,255)">Department of Neuroimaging</span><br style="color:rgb(102,102,102);background-color:rgb(255,255,255)">
<span style="color:rgb(102,102,102);background-color:rgb(255,255,255)">Institute of Psychiatry (Box 089)</span><br style="color:rgb(102,102,102);background-color:rgb(255,255,255)">
<span style="color:rgb(102,102,102);background-color:rgb(255,255,255)">King's College London</span><span style="background-color:rgb(255,255,255)"></span><br style="color:rgb(102,102,102);background-color:rgb(255,255,255)">
<span style="color:rgb(102,102,102);background-color:rgb(255,255,255)">Denmark Hill</span><br style="color:rgb(102,102,102);background-color:rgb(255,255,255)">
<span style="color:rgb(102,102,102);background-color:rgb(255,255,255)">London SE5 8AF</span><br style="color:rgb(102,102,102);background-color:rgb(255,255,255)">
<span style="color:rgb(102,102,102);background-color:rgb(255,255,255)">Tel. 020 32283069</span><br style="color:rgb(102,102,102);background-color:rgb(255,255,255)">
<span style="color:rgb(102,102,102);background-color:rgb(255,255,255)">Fax 020 32282116 </span><br style="color:rgb(102,102,102);background-color:rgb(255,255,255)">
<span style="color:rgb(102,102,102);background-color:rgb(255,255,255)">Email: <a href="mailto:Yannis.Paloyelis@kcl.ac.uk">Yannis.Paloyelis@kcl.ac.uk</a></span><br style="color:rgb(102,102,102);background-color:rgb(255,255,255)">
<span style="color:rgb(102,102,102);background-color:rgb(255,255,255)"><a href="mailto:y.paloyelis@gmail.com">y.paloyelis@gmail.com</a></span><br style="background-color:rgb(255,255,255)">
<br><br><br><br>