Giving subliminal message and problem of timing
Hello dear OpenSesame community. I have a timing problem. In my experiment I would like to give subliminal message. As a forehand mask I show a word for 350 ms and immediately after I present my target for 28 ms and another
word for 350 ms as a backward mask. The problem is, when I check the timing, I realize that my target is presented for 84 ms. When I increased the timing to 100 ms, it is appearing for 150 ms. That is, there is always a 50 ms delay. I checked the timing section fot open sesame, I did everything. I shut down all the background programs, internet etc. Also I use xperiment back end. But I don't understand why there is a 50 ms delay.
Could you help me about this issue? How can I show my words/sketchpad exact duration of time.
Ps: My monitor is 60 hz.
PS2: I also create with inlinescript by using canvas. I prepared them first and give the show command later. I still see the same problem.
Comments
Hi akca_ece,
Also think outside the box. Do you have the same problem with other programs?
What's your connection of the input device?
I noticed that I get a delay if my keyboard has a USB connection. So it's better to use parallel port or the old green keyboard connection.
Cheers
Stephan