Dear Liqing, this is a bug in R2014b with ginput(): to get around it, we added an option to display the signal from an electrode using the contextual menu: just right-click on your electrode of interest and select the first menu entry "channel ...". Best regards, Guillaume. On 14/12/15 16:10, Liqing Liu wrote: > Dear SPM experts, > > Currently, I am using Matlab 2014b and spm 12. Normally, when we use spm > eeg display to zoom in the signal of every electrode, there will be a > cross to target one electrode. But when I use this function, the cross > disappeared. Thus it is really hard to choose one specific electrode. I > am wondering whether anyone else met this problem before and how to > solve it? The fifure below shows the function I am talking. Or is there > any alternative ways to zoom in one electrode? > > Thank you! > > Best, > Liqing > > -- Guillaume Flandin, PhD Wellcome Trust Centre for Neuroimaging University College London 12 Queen Square London WC1N 3BG