I have an extremely rich EEG dataset with 5 event codes per trial The following is the progression:

fixation onset -> stimuli onset -> delay -> test -> response

The plan is to examine encoding, maintenance, retrieval, and potentially response ERPs. Each event code has a different meaning, which means I cannot simply use 1 event code from the series in my BDF file under my current format. However, the fixation onset event is not needed for my purposes. Below is an example of my BDF file, time locked to the stimulus onset:

bin1

Details specific to the trials in the bin

.{1}{2}{3}{4}

I have unique 48 bins, and unique combinations of bins will be created later for the analyses. Should this BDF format work, or do I need to modify the event codes so that each string, or array, of events is given a new event code in place of the one I am time-locking on? For example:

bin1

Details specific to the trials in the bin

.{1}{2}{3}{4}

turns into:

bin1

Details specific to the trials in the bin

.{501}

Although changing the event codes is not the hardest task, I would like some feedback before putting in the amount of time that it would require. I have searched for similar questions and am also aware of the developer's guide. I also assume this will help others who are newer to separating EEG data into bins.