Ha Jeong Park

Thank you -- that is very helpful to know. I'm trying to use the cross-verification option as described in the tutorial (i.e., select a PCA dataset in the upper panel, then a new dataset in the lower panel that I would like to apply the factor scoring coefficients to). However this is giving me an error: Error using \ Matrix dimensions must agree. Error in ep_doPCA (line 688) FacPat = FacStr\FacCor; %compute factor pattern matrix Error in ep>pickPCAdata (line 9729) FactorResults = ep_doPCA(crossVerifyPCA.pca.PCAmode,...

Hi Dr. Dien, I’m working with individual-level ERP data analyzed using temporospatial PCA in the EP Toolkit. The data were averaged across trials prior to running the PCA, and I have two sessions (tasks) per participant. I’m interested in estimating split-half reliability within each task so that I can compare reliability across tasks. I was wondering whether there is a recommended way to obtain split-half reliability estimates for PCA-derived measures within the EP Toolkit. If this is not directly...

Works perfectly -- thank you so much! Best, Ha Jeong

I know you said you'd be posting another update soon, but I tried running the same analysis using version 2.9974 but got the same error: Starting AutoPCA. Window size and adjoining samples option for peak measures ignored. There are 26 factors that meet the minimum variance criterion of: 0.005. Index in position 1 exceeds array bounds. Error in ep_windowData (line 884) subSpecs(iSub,:)=EPdata.subjectSpecs(subSessList(1),:); Error in ep (line 7949) outputdata=ep_windowData(EPdata, chanGrp, inputcells,...

Thanks for getting back to me so quickly! Sure thing, I'll try using the most recent version and see if it fixes the error. Thank you, Ha Jeong

Hi Dr. Dien, I'm trying to do auto PCA to export peak data for analysis in an external statistical software. My EEG data were imported as text files, and I have separate sessions (2) for each subject; each session has 2 conditions. I ran temporospatial PCA on this dataset with no issues but am getting the below error message when trying to run auto PCA from the Window menu: Starting AutoPCA. Window size and adjoining samples option for peak measures ignored. There are 26 factors that meet the minimum...