[Eeglablist] rejecting single channel trials

Ingmar Gergel ingmar.gergel at web.de
Wed Mar 21 07:51:22 PDT 2007


Hi there,

following situation:
I have a preprocessed data set, exported from Vision Analyzer (72PA.dat; 
72PA.vhdr; 72PA.vmrk).
Certain trials in certain channels where marked as rejected. E.g.: channel 5 
trial 2 was marked "Bad Amplitude", but all other channels were all right.

After importing the data set with EEGLAB:

EEG = pop_loadbv( dir, fileName, 1, [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 
17 18 19 20] );

all channels in trial 2 are marked as "Bad Amplitude". For further 
calculations I need to remove only the data from channel 5 trial 2.

Obviously the marker file "72PA.vmrk" contains this information, but isn't correctly represented in EEGLAB after the import. Plotting the data set using "Channel data (scroll)", shows that all channels are marked in trial 2.

How can I use the information in the marker file, to tell EEGLAB which trials 
in a single channel have to be rejected?

Thank you,
Ingmar



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