EyeTribe & PyGaze Log Timing Accuracy/Precision
I was wondering if anyone knew how accurate the timing was when logging to the EyeTribe file.
I ran some tests myself but I don't know how valid they are.
This is what I ran in an inline script in OpenSesame:
for i in range(100): eyetracker.log('event') clock.sleep(1000)
Here's a histogram of the inter-event intervals:
There seems to be a lot of variance.
Here is a plot of the inter-event interval as a time series (along with some an EEG test as well):
I am concerned about the accuracy of the logging times because I want to analyze pupil diameter before stimulus presentation, and don't want to analyze areas too early/late.