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>