Dear SPM experts in ERP data analyses,
About the ERP data, how can I re-label the task-event according to the following event's label? I utilized E-Prime 1 to mark the triggers of events, e.g. stimuli = 1 or 2, response = 11 or 12 (following stimulus 1), or 21 or 22 (following stimulus 2). These triggers can be easily viewed through the SPM8 software, and I can do both stimulus-locked (using labels 1 and 2) and response-locked (using labels 11, 12, 21 and 22) data analyses. Now, I am going to re-label the stimulus event according to the immediately following response event, e.g. re-name label 1 as 911 (if the following response is 11) or 912 (if the following response is 12), and re-name label 2 as 921 (if the following response is 21) or 922 (if the following response is 22). Through such a translation, I can analyze the stimulus-locked data according to the response made. Any suggestion is appreciated!