FT_ARTIFACT_EOG

Note that this reference documentation is identical to the help that is displayed in MATLAB when you type “help ft_artifact_eog”.

  FT_ARTIFACT_EOG reads the data segments of interest from file and
  identifies EOG artifacts.
 
  Use as
    [cfg, artifact] = ft_artifact_eog(cfg)
  with the configuration options
    cfg.dataset 
    cfg.headerfile 
    cfg.datafile
 
  Alternatively you can use it as
    [cfg, artifact] = ft_artifact_eog(cfg, data)
 
  In both cases the configuration should also contain
    cfg.trl        = structure that defines the data segments of interest. See FT_DEFINETRIAL
    cfg.continuous = 'yes' or 'no' whether the file contains continuous data
 
  The data is preprocessed (again) with the following configuration parameters,
  which are optimal for identifying EOG artifacts.
    cfg.artfctdef.eog.bpfilter   = 'yes'
    cfg.artfctdef.eog.bpfilttype = 'but'
    cfg.artfctdef.eog.bpfreq     = [1 15]
    cfg.artfctdef.eog.bpfiltord  = 4
    cfg.artfctdef.eog.hilbert    = 'yes'
 
  Artifacts are identified by means of thresholding the z-transformed value
  of the preprocessed data.
    cfg.artfctdef.eog.channel      = Nx1 cell-array with selection of channels, see FT_CHANNELSELECTION for details
    cfg.artfctdef.eog.cutoff       = z-value at which to threshold (default = 4)
    cfg.artfctdef.eog.trlpadding   = 0.5
    cfg.artfctdef.eog.fltpadding   = 0.1
    cfg.artfctdef.eog.artpadding   = 0.1
 
  The output argument "artifact" is a Nx2 matrix comparable to the
  "trl" matrix of FT_DEFINETRIAL. The first column of which specifying the
  beginsamples of an artifact period, the second column contains the
  endsamples of the artifactperiods.
 
  To facilitate data-handling and distributed computing you can use
    cfg.inputfile   =  ...
  If you specify this option the input data will be read from a *.mat
  file on disk. This mat files should contain only a single variable named 'data',
  corresponding to the input structure.
 
  See also FT_REJECTARTIFACT, FT_ARTIFACT_CLIP, FT_ARTIFACT_ECG, FT_ARTIFACT_EOG,
  FT_ARTIFACT_JUMP, FT_ARTIFACT_MUSCLE, FT_ARTIFACT_THRESHOLD, FT_ARTIFACT_ZVALUE

reference/ft_artifact_eog.txt · Last modified: 2014/09/18 13:00 (external edit)

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