Synchronization problem Opensesame + EyeTribe
I am using Opensesame + EyeTribe eye tracker. I am having trouble to sincronize the recording (self.recording and self.stop_recording) with the time at the trial level; for instance, a trial with opensesame last 3000 ms, and I am recording EyeTribe samples along this trial. However, when and I sum all the durations of the samples (each about 16 ms) they do not add up to 3000 ms; rather I get sums of between 1500 and 2500 ms.
Anyone has any suggestions?
Many thanks in advance,