added more information to trialDefinition.m

testing needed

trialDefinition.m

@@ -132,6 +132,9 @@ recordingSystem = 'Biopac';
 % If you plan to export your data in BIDS format, the following data is mandatory and cannot be 
 % omitted.
 
+% Presentation time of the stimulus in s whose onset time was specified above under stimOnset.
+bids.stimDuration = 3;
+
 % Subject name
 bids.subjectName = '0815';