| POP_REJKURT | Rejection of artifact in a dataset using kurtosis of activity (i.e. to detect peaky distribution of activity). |
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| Usage: | >> pop_rejkurt( INEEG, typerej) % pop-up interative window mode >> [OUTEEG, locthresh, globthresh, nrej] = = pop_rejkurt( INEEG, typerej, elec_comp, locthresh, globthresh, superpose, reject, vistype); |
| Graphical interface: | |
"Electrode" |
[edit box] electrodes or components (number) to take into consideration for rejection. Same as the 'elec_comp' parameter from the command line. |
"Single-channel limit" |
[edit box] pkurtosis limit in terms of standard-dev. Same as 'locthresh' command line parameter. |
"All-channel limit" |
[edit box] kurtosis limit in terms of standard-dev (all channel regrouped). Same as 'globthresh' command line parameter. |
"Display with previous rejection" |
[edit box] can be either YES or NO. This edit box corresponds to the command line input option 'superpose'. |
"Reject marked trials" |
[edit box] can be either YES or NO. This edit box corresponds to the command line input option 'reject'. |
"visualization type" |
[edit box] can be either REJECTRIALS or EEGPLOT. This edit box corresponds to the command line input option 'vistype'. |
| Inputs: | |
INEEG |
input dataset |
typerej |
type of rejection (0 = independent components; 1 = eeg data). Default is 1. For independent components, before thresholding, the activity is normalized for each component. |
elec_comp |
[e1 e2 ...] electrodes (number) to take into consideration for rejection |
locthresh |
activity kurtosis limit in terms of standard-dev. |
globthresh |
global limit (for all channel). Same unit as above. |
superpose |
0=do not superpose pre-labelling with previous pre-labelling (stored in the dataset). 1=consider both pre-labelling (using different colors). Default is 0. |
reject |
0=do not reject labelled trials (but still store the labels. 1=reject labelled trials. Default is 1. |
vistype |
visualization type. 0 calls rejstatepoch() and 1 calls eegplot() default is 0. |
| Outputs: | |
OUTEEG |
output dataset with updated kurtosis array |
locthresh |
electrodes probability of activity thresholds in terms of standard-dev. |
globthresh |
global threshold (where all electrode activity are regrouped). |
nrej |
number of rejected sweeps |
| Author: | Arnaud Delorme, CNL / Salk Institute, 2001 |
| See also: | rejkurt(), rejstatepoch(), pop_rejepoch, eegplot(), eeglab() |