Is there a way to identify and then delete trials with a specific event? Right now, I’m having to go through each trial individually to determine which events it contains.
There are no tools to do this from the interface once the data is imported (= epoched = copied to the database). You would need to write your own Matlab scripts to automate this.
The easiest solution is to filter the events in the continuous file, before your epoch the data.
You can create combination of events, mark as bad some events or combinations of events... See the processes in the Events group: Combine stim/response, Group, Merge, Rename...
Add the tag "_bad" to an event to mark it globally as bad (and not processed once epoched), or use the corresponding menu "Events > Mark group as bad" in the Record tab.