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reference:ft_channelselection [2018/08/23 14:43] (current)
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 +=====  FT_CHANNELSELECTION =====
 +
 +Note that this reference documentation is identical to the help that is displayed in MATLAB when you type "help ft_channelselection"​.
 +
 +<​html><​pre>​
 +  <a href=/​reference/​ft_channelselection><​font color=green>​FT_CHANNELSELECTION</​font></​a>​ makes a selection of EEG and/or MEG channel labels.
 +  This function translates the user-specified list of channels into channel
 +  labels as they occur in the data. This channel selection procedure can be
 +  used throughout FieldTrip.
 + 
 +  You can specify a mixture of real channel labels and of special strings,
 +  or index numbers that will be replaced by the corresponding channel
 +  labels. Channels that are not present in the raw datafile are
 +  automatically removed from the channel list.
 + 
 +  E.g. the desired input specification can be:
 +    '​all' ​       is replaced by all channels in the datafile
 +    '​gui' ​       this will pop up a graphical user interface to select the channels
 +    '​C*' ​        is replaced by all channels that match the wildcard, e.g. C1, C2, C3, ...
 +    '​*1' ​        is replaced by all channels that match the wildcard, e.g. C1, P1, F1, ...
 +    '​M*1' ​       is replaced by all channels that match the wildcard, e.g. MEG0111, MEG0131, MEG0131, ...
 +    '​meg' ​       is replaced by all MEG channels (works for CTF, 4D, Neuromag and Yokogawa)
 +    '​megref' ​    is replaced by all MEG reference channels (works for CTF and 4D)
 +    '​meggrad' ​   is replaced by all MEG gradiometer channels (works for Yokogawa and Neuromag306)
 +    '​megplanar' ​ is replaced by all MEG planar gradiometer channels (works for Neuromag306)
 +    '​megmag' ​    is replaced by all MEG magnetometer channels (works for Yokogawa and Neuromag306)
 +    '​eeg' ​       is replaced by all recognized EEG channels (this is system dependent)
 +    '​eeg1020' ​   is replaced by '​Fp1',​ '​Fpz',​ '​Fp2',​ '​F7',​ '​F3',​ ...
 +    '​eog' ​       is replaced by all recognized EOG channels
 +    '​ecg' ​       is replaced by all recognized ECG channels
 +    '​nirs' ​      is replaced by all channels recognized as NIRS channels
 +    '​emg' ​       is replaced by all channels in the datafile starting with '​EMG'​
 +    '​lfp' ​       is replaced by all channels in the datafile starting with '​lfp'​
 +    '​mua' ​       is replaced by all channels in the datafile starting with '​mua'​
 +    '​spike' ​     is replaced by all channels in the datafile starting with '​spike'​
 +    10           is replaced by the 10th channel in the datafile
 + 
 +  Other channel groups are
 +    '​EEG1010' ​   with approximately 90 electrodes
 +    '​EEG1005' ​   with approximately 350 electrodes
 +    '​EEGREF' ​    for mastoid and ear electrodes (M1, M2, LM, RM, A1, A2)
 +    '​MZ' ​        for MEG zenith
 +    '​ML' ​        for MEG left
 +    '​MR' ​        for MEG right
 +    '​MLx',​ '​MRx'​ and '​MZx'​ with x=C,F,O,P,T for left/right central, frontal, occipital, parietal and temporal
 + 
 +  You can also exclude channels or channel groups using the following syntax
 +    {'​all',​ '​-POz',​ '​-Fp1',​ -EOG'}
 + 
 +  See also <a href=/​reference/​ft_preprocessing><​font color=green>​FT_PREPROCESSING</​font></​a>,​ <a href=/​reference/​ft_senslabel><​font color=green>​FT_SENSLABEL</​font></​a>,​ <a href=/​reference/​ft_multiplotER><​font color=green>​FT_MULTIPLOTER</​font></​a>,​ <a href=/​reference/​ft_multiplotTFR><​font color=green>​FT_MULTIPLOTTFR</​font></​a>,​
 +  <a href=/​reference/​ft_singleplotER><​font color=green>​FT_SINGLEPLOTER</​font></​a>,​ <a href=/​reference/​ft_singleplotTFR><​font color=green>​FT_SINGLEPLOTTFR</​font></​a>​
 +</​pre></​html>​