| EEGLAB | Eeglab Version 2.00beta - Arnaud Delorme with contributions from other members of the ica toolbox team of Scott Makeig - The Salk Institute for Biological Studies |
| Structure of eeg datasets used by eeglab: | |
EEG.setname |
name of the dataset |
EEG.filename |
filename of the dataset |
EEG.filepath |
filepath of the dataset |
EEG.namechan |
names of the channels (will be deprecated) |
EEG.poschan |
filename containing the name and position of the channels |
EEG.pnts |
number of points per sweep (trial) |
EEG.nbchan |
number of channels |
EEG.trials |
number of trials |
EEG.srate |
sampling rate |
EEG.xmin |
trials' begining time (in seconde) |
EEG.xmax |
trials' ending time (in seconde) |
EEG.data |
the data array (nbchan x points x trials) |
| ICA variables: | |
EEG.icasphere |
sphere array returned by the runica function |
EEG.icaweights |
weight array returned by the runica function |
EEG.icawinv |
inverse weight matrix which gives the topological distribution of the electrodes for all the component. |
EEG.icadata |
ica activity (nbcomponents x points x trials) |
| Events and trials' tags: | |
EEG.events |
array of events organized in rows. Each row is an event. The first column is the type of the event, the second the trial concerned, the third..., values associated with this event (i.e. reaction time. Ex: [1 10 360] is an event of type 1, it concernes trial number 10 and has the value 360 (reaction time in ms for instance). |
EEG.rt |
trials' reaction time array, one value trial. It is redundant with events but allow a easier access by the user ( eeglab will keep the consistency between events and rt fields, the real value being the one stored events with type 1). |
EEG.trialsval |
trial's value array. Each row is a trial (same number of rows as number of trials). Each column represents a different information (trial's type...). |
| Variables used for manual and automatic rejection: | |
EEG.stats.kurtc |
kurtosis of components |
EEG.stats.kurtg |
global kurtosis of components |
EEG.stats.kurta |
kurtosis of accepted trials |
EEG.stats.kurtr |
kurtosis of rejected trials |
EEG.stats.kurtd |
kurtosis of spatial distribution |
EEG.reject.entropy |
entropy of trials |
EEG.reject.entropyc |
entropy of components |
EEG.reject.threshold |
thresholds for rejection |
EEG.reject.icareject |
rejected trials based on ica |
EEG.reject.compreject |
deprecated |
EEG.reject.gcompreject |
rejected ica components |
EEG.reject.comptrial |
deprecated |
EEG.reject.sigreject |
rejected trials based on the raw data |
EEG.reject.elecreject |
rejected trials based on the raw data for each electrode. |
EEG.reject.eegentropy |
deprecated |
EEG.reject.eegkurt |
deprecated |
EEG.reject.eegkurtg |
deprecated |
| See also: | eegglobal, all pop-up functions the full documentation at http://www.cnl.salk.edu/~arno/eeglab.html |