[Eeglablist] Channel locations lost after re-referencing

Fri Mar 2 14:21:27 PST 2018

Dear Laura,
*pop_eegchanoperator* is not an EEGLAB function. This function belongs to
ERPLAB, which we do not develop at the SCCN. You may want to ask directly
to ERPLAB developers regarding this problem.
 Hope this helps,
Ramon

On Thu, Mar 1, 2018 at 2:54 PM, lmm226 <laura.morett at yale.edu> wrote:

> As the title of this message suggests, for some reason, the channel
> locations for some subjects are lost when I re-reference.  This is not the
> case for all subjects, and I'm unsure of what differentiates subjects for
> whom channels are lost during re-referencing from subjects for whom they
> aren't. I checked the channels being used for the re-referencing as well as
> new channels created during these steps, but they all look fine to me.
> Below is the code I'm using to re-reference:
>
>
>         EEG = pop_eegchanoperator( EEG, [home_path
> 'chan_averaging_combined.txt'], 'ErrorMsg', 'popup', 'Warning', 'off' );
>
>         EEG.setname = [EEG.setname '_reref'];
>
>         if (save_files)
>
>             EEG = pop_saveset(EEG, 'filename', [EEG.setname '.set'],
> 'filepath', data_path);
>
>         end
>
> Below are the contents of chan_averaging_combined.txt.  Any suggestions as
> to what may be causing this problem and how to fix it would be greatly
> appreciated.  TIA!
>
>
> nch1 = ch1 - ( (ch57+ch101)/2 ) Label E1
> nch2 = ch2 - ( (ch57+ch101)/2 ) Label E2
> nch3 = ch3 - ( (ch57+ch101)/2 ) Label E3
> nch4 = ch4 - ( (ch57+ch101)/2 ) Label E4
> nch5 = ch5 - ( (ch57+ch101)/2 ) Label E5
> nch6 = ch6 - ( (ch57+ch101)/2 ) Label E6
> nch7 = ch7 - ( (ch57+ch101)/2 ) Label E7
> nch8 = ch8 - ( (ch57+ch101)/2 ) Label E8
> nch9 = ch9 - ( (ch57+ch101)/2 ) Label E9
> nch10 = ch10 - ( (ch57+ch101)/2 ) Label E10
> nch11 = ch11 - ( (ch57+ch101)/2 ) Label E11
> nch12 = ch12 - ( (ch57+ch101)/2 ) Label E12
> nch13 = ch13 - ( (ch57+ch101)/2 ) Label E13
> nch14 = ch14 - ( (ch57+ch101)/2 ) Label E14
> nch15 = ch15 - ( (ch57+ch101)/2 ) Label E15
> nch16 = ch16 - ( (ch57+ch101)/2 ) Label E16
> nch17 = ch17 - ( (ch57+ch101)/2 ) Label E17
> nch18 = ch18 - ( (ch57+ch101)/2 ) Label E18
> nch19 = ch19 - ( (ch57+ch101)/2 ) Label E19
> nch20 = ch20 - ( (ch57+ch101)/2 ) Label E20
> nch21 = ch21 - ( (ch57+ch101)/2 ) Label E21
> nch22 = ch22 - ( (ch57+ch101)/2 ) Label E22
> nch23 = ch23 - ( (ch57+ch101)/2 ) Label E23
> nch24 = ch24 - ( (ch57+ch101)/2 ) Label E24
> nch25 = ch25 - ( (ch57+ch101)/2 ) Label E25
> nch26 = ch26 - ( (ch57+ch101)/2 ) Label E26
> nch27 = ch27 - ( (ch57+ch101)/2 ) Label E27
> nch28 = ch28 - ( (ch57+ch101)/2 ) Label E28
> nch29 = ch29 - ( (ch57+ch101)/2 ) Label E29
> nch30 = ch30 - ( (ch57+ch101)/2 ) Label E30
> nch31 = ch31 - ( (ch57+ch101)/2 ) Label E31
> nch32 = ch32 - ( (ch57+ch101)/2 ) Label E32
> nch33 = ch33 - ( (ch57+ch101)/2 ) Label E33
> nch34 = ch34 - ( (ch57+ch101)/2 ) Label E34
> nch35 = ch35 - ( (ch57+ch101)/2 ) Label E35
> nch36 = ch36 - ( (ch57+ch101)/2 ) Label E36
> nch37 = ch37 - ( (ch57+ch101)/2 ) Label E37
> nch38 = ch38 - ( (ch57+ch101)/2 ) Label E38
> nch39 = ch39 - ( (ch57+ch101)/2 ) Label E39
> nch40 = ch40 - ( (ch57+ch101)/2 ) Label E40
> nch41 = ch41 - ( (ch57+ch101)/2 ) Label E41
> nch42 = ch42 - ( (ch57+ch101)/2 ) Label E42
> nch43 = ch43 - ( (ch57+ch101)/2 ) Label E43
> nch44 = ch44 - ( (ch57+ch101)/2 ) Label E44
> nch45 = ch45 - ( (ch57+ch101)/2 ) Label E45
> nch46 = ch46 - ( (ch57+ch101)/2 ) Label E46
> nch47 = ch47 - ( (ch57+ch101)/2 ) Label E47
> nch48 = ch48 - ( (ch57+ch101)/2 ) Label E48
> nch49 = ch49 - ( (ch57+ch101)/2 ) Label E49
> nch50 = ch50 - ( (ch57+ch101)/2 ) Label E50
> nch51 = ch51 - ( (ch57+ch101)/2 ) Label E51
> nch52 = ch52 - ( (ch57+ch101)/2 ) Label E52
> nch53 = ch53 - ( (ch57+ch101)/2 ) Label E53
> nch54 = ch54 - ( (ch57+ch101)/2 ) Label E54
> nch55 = ch55 - ( (ch57+ch101)/2 ) Label E55
> nch56 = ch56 - ( (ch57+ch101)/2 ) Label E56
> nch57 = ch57 Label E57
> nch58 = ch58 - ( (ch57+ch101)/2 ) Label E58
> nch59 = ch59 - ( (ch57+ch101)/2 ) Label E59
> nch60 = ch60 - ( (ch57+ch101)/2 ) Label E60
> nch61 = ch61 - ( (ch57+ch101)/2 ) Label E61
> nch62 = ch62 - ( (ch57+ch101)/2 ) Label E62
> nch63 = ch63 - ( (ch57+ch101)/2 ) Label E63
> nch64 = ch64 - ( (ch57+ch101)/2 ) Label E64
> nch65 = ch65 - ( (ch57+ch101)/2 ) Label E65
> nch66 = ch66 - ( (ch57+ch101)/2 ) Label E66
> nch67 = ch67 - ( (ch57+ch101)/2 ) Label E67
> nch68 = ch68 - ( (ch57+ch101)/2 ) Label E68
> nch69 = ch69 - ( (ch57+ch101)/2 ) Label E69
> nch70 = ch70 - ( (ch57+ch101)/2 ) Label E70
> nch71 = ch71 - ( (ch57+ch101)/2 ) Label E71
> nch72 = ch72 - ( (ch57+ch101)/2 ) Label E72
> nch73 = ch73 - ( (ch57+ch101)/2 ) Label E73
> nch74 = ch74 - ( (ch57+ch101)/2 ) Label E74
> nch75 = ch75 - ( (ch57+ch101)/2 ) Label E75
> nch76 = ch76 - ( (ch57+ch101)/2 ) Label E76
> nch77 = ch77 - ( (ch57+ch101)/2 ) Label E77
> nch78 = ch78 - ( (ch57+ch101)/2 ) Label E78
> nch79 = ch79 - ( (ch57+ch101)/2 ) Label E79
> nch80 = ch80 - ( (ch57+ch101)/2 ) Label E80
> nch81 = ch81 - ( (ch57+ch101)/2 ) Label E81
> nch82 = ch82 - ( (ch57+ch101)/2 ) Label E82
> nch83 = ch83 - ( (ch57+ch101)/2 ) Label E83
> nch84 = ch84 - ( (ch57+ch101)/2 ) Label E84
> nch85 = ch85 - ( (ch57+ch101)/2 ) Label E85
> nch86 = ch86 - ( (ch57+ch101)/2 ) Label E86
> nch87 = ch87 - ( (ch57+ch101)/2 ) Label E87
> nch88 = ch88 - ( (ch57+ch101)/2 ) Label E88
> nch89 = ch89 - ( (ch57+ch101)/2 ) Label E89
> nch90 = ch90 - ( (ch57+ch101)/2 ) Label E90
> nch91 = ch91 - ( (ch57+ch101)/2 ) Label E91
> nch92 = ch92 - ( (ch57+ch101)/2 ) Label E92
> nch93 = ch93 - ( (ch57+ch101)/2 ) Label E93
> nch94 = ch94 - ( (ch57+ch101)/2 ) Label E94
> nch95 = ch95 - ( (ch57+ch101)/2 ) Label E95
> nch96 = ch96 - ( (ch57+ch101)/2 ) Label E96
> nch97 = ch97 - ( (ch57+ch101)/2 ) Label E97
> nch98 = ch98 - ( (ch57+ch101)/2 ) Label E98
> nch99 = ch99 - ( (ch57+ch101)/2 ) Label E99
> nch100 = ch100 - ( (ch57+ch101)/2 ) Label E100
> nch101 = ch101 Label E101
> nch102 = ch102 - ( (ch57+ch101)/2 ) Label E102
> nch103 = ch103 - ( (ch57+ch101)/2 ) Label E103
> nch104 = ch104 - ( (ch57+ch101)/2 ) Label E104
> nch105 = ch105 - ( (ch57+ch101)/2 ) Label E105
> nch106 = ch106 - ( (ch57+ch101)/2 ) Label E106
> nch107 = ch107 - ( (ch57+ch101)/2 ) Label E107
> nch108 = ch108 - ( (ch57+ch101)/2 ) Label E108
> nch109 = ch109 - ( (ch57+ch101)/2 ) Label E109
> nch110 = ch110 - ( (ch57+ch101)/2 ) Label E110
> nch111 = ch111 - ( (ch57+ch101)/2 ) Label E111
> nch112 = ch112 - ( (ch57+ch101)/2 ) Label E112
> nch113 = ch113 - ( (ch57+ch101)/2 ) Label E113
> nch114 = ch114 - ( (ch57+ch101)/2 ) Label E114
> nch115 = ch115 - ( (ch57+ch101)/2 ) Label E115
> nch116 = ch116 - ( (ch57+ch101)/2 ) Label E116
> nch117 = ch117 - ( (ch57+ch101)/2 ) Label E117
> nch118 = ch118 - ( (ch57+ch101)/2 ) Label E118
> nch119 = ch119 - ( (ch57+ch101)/2 ) Label E119
> nch120 = ch120 - ( (ch57+ch101)/2 ) Label E120
> nch121 = ch121 - ( (ch57+ch101)/2 ) Label E121
> nch122 = ch122 - ( (ch57+ch101)/2 ) Label E122
> nch123 = ch123 - ( (ch57+ch101)/2 ) Label E123
> nch124 = ch124 - ( (ch57+ch101)/2 ) Label E124
> nch125 = ch125 - ( (ch57+ch101)/2 ) Label E125
> nch126 = ch126 - ( (ch57+ch101)/2 ) Label E126
> nch127 = ch127 - ( (ch57+ch101)/2 ) Label E127
> nch128 = ch128 - ( (ch57+ch101)/2 ) Label E128
> nch129 = ch128 - ch17 Label HEOG-R
> nch130 = ch17 - ch125 Label HEOG-L
> nch131 = ch127 + ch126 - (((ch21+ch25)/2) + ((ch14+ch8)/2)) Label biVEOG
>
> <http://lauramorettphd.wix.com/home>
>
>
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-- 
_____________________________________________________
Ramon Martinez-Cancino
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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