FT_ARTIFACT_CLIP
Note that this reference documentation is identical to the help that is displayed in MATLAB when you type “help ft_artifact_clip”.
FT_ARTIFACT_CLIP scans the data segments of interest for channels that clip. A clipping artifact is detected by the signal being completely flat for some time. Use as [cfg, artifact] = ft_artifact_clip(cfg) with the configuration options cfg.dataset = string with the filename or cfg.headerfile = string with the filename cfg.datafile = string with the filename Alternatively you can use it as [cfg, artifact] = ft_artifact_clip(cfg, data) where the input data is a structure as obtained from FT_PREPROCESSING. In both cases the configuration should also contain cfg.artfctdef.clip.channel = Nx1 cell-array with selection of channels, see FT_CHANNELSELECTION for details cfg.artfctdef.clip.pretim = 0.000; pre-artifact rejection-interval in seconds cfg.artfctdef.clip.psttim = 0.000; post-artifact rejection-interval in seconds cfg.artfctdef.clip.timethreshold = number, minimum duration in seconds of a datasegment with consecutive identical samples to be considered as 'clipped' cfg.artfctdef.clip.amplthreshold = number, minimum amplitude difference in consecutive samples to be considered as 'clipped' (default = 0) string, percent of the amplitude range considered as 'clipped' (i.e. '1%') cfg.continuous = 'yes' or 'no' whether the file contains continuous data 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