Home > eeg > egis > net_utils > arrays.m

arrays

PURPOSE ^

[channel_arrays,group_names] = arrays(array_flag,bad_chan)

SYNOPSIS ^

function [channel_arrays,group_names] = arrays(array_flag,bad_chan);

DESCRIPTION ^

[channel_arrays,group_names] = arrays(array_flag,bad_chan)

 electrode arrays for the 129 channel EEG system
 argin
 array_flag = 'oned','quadrant','hemisphere','all','frontback'
 bad_chan = bad channel list

 argout
 channel_arrays = arrays of channels named array_flag. Rows are distinct lists
    the arrays are zero padded to have the same lenghth. 
 group_names = names for arrays

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function [channel_arrays,group_names] = arrays(array_flag,bad_chan);
0002 %[channel_arrays,group_names] = arrays(array_flag,bad_chan)
0003 %
0004 % electrode arrays for the 129 channel EEG system
0005 % argin
0006 % array_flag = 'oned','quadrant','hemisphere','all','frontback'
0007 % bad_chan = bad channel list
0008 %
0009 % argout
0010 % channel_arrays = arrays of channels named array_flag. Rows are distinct lists
0011 %    the arrays are zero padded to have the same lenghth.
0012 % group_names = names for arrays
0013 if strcmp(array_flag,'oned')
0014     [xelec,yelec,zelec] = electrodes(129);
0015     twod_dist = twod_pos(xelec,yelec,zelec,9.2);
0016     ch_pair_indices;
0017     channel_arrays = [18 23 27 34 40 46 50 58 65 71;19 24 28 35 41 47 51 59 66 72;20 25 29 36 42 48 52 60 67 0; 12 21 30 37 43 53 61 0 0 0; 16 11 6 129 55 62 68 73 0 0; 5 119 112 105 94 87 79 0 0 0; 4 124 118 111 104 99 93 86 78 0; 10 3 123 117 110 103 98 92 85 77; 15 9 2 122 116 109 102 97 91 84];
0018     group_names = ['L1';'L2';'L3';'L4'; 'M0';'R4';'R3';'R2';'R1'];
0019 elseif strcmp(array_flag,'quadrant')
0020     
0021     channel_arrays = [1 2 3 4 5 8 9 10 14 15 121 122 123 124 119 113 107 116 117 118 110 111 112 104 105 106;81 88 94 99 103 80 87 93 98 102 79 86 92 97 101 78 85 91 96 77 84 90 83 0 0 0; 32 38 43 48 47 46 50 51 52 53 54 57 58 59 60 61 64 65 66 67 70 71 72 75 0 0; 22 18 23 19 26 27 24 20 12 33 39 34 28 25 21 7 35 29 30 31 36 37 40 41 42 0];
0022     group_names = ['RA'; 'RP'; 'LP'; 'LA'];
0023 
0024 elseif strcmp(array_flag,'hemisphere')
0025     channel_arrays = [1 2 3 4 5 8 9 10 14 15 121 122 123 124 119 113 107 116 117 118 110 111 112 104 105 106 81 88 94 99 103 80 87 93 98 102 79 86 92 97 101 78 85 91 96 77 84 90 83; 32 38 43 48 47 46 50 51 52 53 54 57 58 59 60 61 64 65 66 67 70 71 72 75 22 18 23 19 26 27 24 20 12 33 39 34 28 25 21 7 35 29 30 31 36 37 40 41 42];
0026     group_names = ['R'; 'L'];
0027     
0028 elseif strcmp(array_flag, 'all')
0029     channel_arrays = [1 2 3 4 5 8 9 10 14 15 121 122 123 124 119 113 107 116 117 118 110 111 112 104 105 106 81 88 94 99 103 80 87 93 98 102 79 86 92 97 101 78 85 91 96 77 84 90 83 32 38 43 48 47 46 50 51 52 53 54 57 58 59 60 61 64 65 66 67 70 71 72 75 22 18 23 19 26 27 24 20 12 33 39 34 28 25 21 7 35 29 30 31 36 37 40 41 42];
0030     group_names = 'A';
0031 elseif strcmp(array_flag, 'frontback')
0032     channel_arrays2 = [1 2 3 4 5 8 9 10 14 15 121 122 123 124 119 113 107 116 117 118 110 111 112 104 105 106;81 88 94 99 103 80 87 93 98 102 79 86 92 97 101 78 85 91 96 77 84 90 83 0 0 0; 32 38 43 48 47 46 50 51 52 53 54 57 58 59 60 61 64 65 66 67 70 71 72 75 0 0; 22 18 23 19 26 27 24 20 12 33 39 34 28 25 21 7 35 29 30 31 36 37 40 41 42 0];
0033     group_names = ['AN'; 'PO'];
0034     channel_arrays = [channel_arrays2(1,:) channel_arrays2(4,:); channel_arrays2(2,:) channel_arrays2(3,:)];
0035 elseif strcmp(array_flag, 'aug_oned')
0036     channel_arrays = [19 24 28 35 41 47 51 59 66 72 20 25 29 36 42 48 52 60 67 0 0 0; 12 21 30 37 43 53 61 16 11 6 129 55 62 68 73 5 119 112 105 94 87 79; 4 124 118 111 104 99 93 86 78 10 3 123 117 110 103 98 92 85 77 0 0 0];
0037     group_names = ['L';'M';'R'];
0038 else 
0039     error('unknown array');
0040 
0041 end;
0042 
0043 for i = 1:size(channel_arrays,1)
0044     temp = zeros(1,size(find(channel_arrays(i,:)),2));
0045     temp = channel_arrays(i,find(channel_arrays(i,:)));
0046     mask = zeros(1,129);
0047     mask(temp) = ones(1,size(temp,2));
0048     mask(bad_chan) = zeros(1,size(bad_chan,2));
0049     temp2 = zeros(1,size(find(mask),2));
0050     temp2 = find(mask);
0051     channel_arrays(i,:) = zeros(1,size(channel_arrays,2));
0052     channel_arrays(i,1:size(temp2,2)) = temp2;
0053 end;
0054 
0055 
0056

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