LJGS

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• Hi guys, Just checking, this isn't an issue if I have the form at the end of the experiment right? I just realised I need a quick way to patch demographic questions into my experiments, and so I am thinking I will add age/gender forms to the end. I…

  in form_text_input mouse-cursor Comment by LJGS April 2018
• Sorry for slow reply, the variable jitter is a big array of random numbers drawn from the distribution you wanted, so just take as many numbers out as you need starting from 1 to 100,000 cheers

  in Jitter from exponential distribution Comment by LJGS April 2018
• Sorry the graph was confusing, thanks very much for the help! Ok so on the 59hz monitor I have here I got the below, which seems about right. I'll pass this on to test! 49.98553242 50.07567327 49.99965447 50.03931647 50.08649017 49.99755119 …

  in Temporal resolution using the psycho back-end seems too good Comment by LJGS April 2018
• Hmm, no idea what a jitter time is! I can maybe help a bit with the distribution. The below will generate a truncated exponential distribution between 0-3500ms using the inverse cdf method, then add on 500ms. This almost gives you what you want. The…

  in Jitter from exponential distribution Comment by LJGS April 2018
• Ah I now have another question about coroutine timing. I will chuck it here as well to not flood the forums! I am measuring eye RT to a stop-signal coroutine with the function embedded at the bottom I notice something a bit unexpected. The maximum…

  in Do coroutine stimuli get pre-loaded? Comment by LJGS January 2018
• Awesome, thanks very much. I am interested more about the time within a coroutine for my RT measure, so I think I am all good.

  in Do coroutine stimuli get pre-loaded? Comment by LJGS January 2018
• Thanks Eduard, If I recall, you are running eye experiments on an eyelink computer with a psychopy back-end right? It's strange that yours would work just fine whilst mine have problems... I wonder if it's the particular system my colleague is tryi…

  in Question about stability of the psycho back-end Comment by LJGS December 2017
• No worries, let me know how you go Cheers

  in How to use PyGaze with SMI Eye Tracker (iView) Comment by LJGS November 2017
• Hi, First off I am not a pygaze developer, or any kind of developer. I am a psych postdoc who somehow ended up inherenting an unexpected eyetracking project. We have the same eye tracker in my lab, and yes, it is possible to use with pygaze. You ru…

  in How to use PyGaze with SMI Eye Tracker (iView) Comment by LJGS October 2017
• Were you guys able to get this working? I have the same 401 error myself attempting to dual-box. I also wondered if I need to install SDK on the stimulus computer...

  in Dual-PC setup with SMI RED250mobile Comment by LJGS October 2017
• Thanks very much Eduard. The open source support I have gotten from you and others has made the difference between this project being doable and it crashing and burning. Bit of good news, I got psychopy working by changing the monitor to '0' instea…

  in Two timing questions Comment by LJGS September 2017
• Hi guys I found a solution that worked for me! I looked at pupil dilation rather than gazepos. When it is 0, they blinked. I have messed around with it a bit and it seems very good at tracking blinks. The eyetracker.pupil_size didn't work for me an…

  in SMI-is it possible o tell apart if the tracker lost the eyes (blinking etc) from looking off screen? Comment by LJGS August 2017
• Sorry, one more thing I'm not entirely clear on what pygaze startrecording, stop.recording, pygaze log etc do. I couldn't find the example template that explains it in opensesame. I already have to turn on the SMI iview program prior to the experi…

  in SMI 500: Opensesame crashes with Pygaze for max screen mode, but runs fine otherwise. Comment by LJGS August 2017
• I am so close to having this paradigm crisp, but one stumbling block remains. It seems that blinking can sometimes confound my current method of recording a response (logging eyetracker.sample and recording a response when the x value breaches some…

  in SMI 500: Opensesame crashes with Pygaze for max screen mode, but runs fine otherwise. Comment by LJGS August 2017
• Ah, yes, I see. We are using saccading left or right as a response, not fixating (the idea is to get highly ballistic responses that participants cannot 'stop' once they are already in the pipeline), my bad I used the wrong term in the previous post…

  in SMI 500: Opensesame crashes with Pygaze for max screen mode, but runs fine otherwise. Comment by LJGS August 2017
• Cheers Eduard, that looks good, I will implement it. One thing I don't quite understand : "If you want to know when fixations occurred, you would want to make sure that the current eye position is stable across time (end coordinates after, sa…

  in SMI 500: Opensesame crashes with Pygaze for max screen mode, but runs fine otherwise. Comment by LJGS August 2017
• Hi all, The eyetracker experiment is going well now, hopefully close to done. I am hoping to run something by anyone who is familiar with the best way to record responses using fixations. Currently, I am aiming to record when participants look lef…

  in SMI 500: Opensesame crashes with Pygaze for max screen mode, but runs fine otherwise. Comment by LJGS August 2017
• Cesco, this function is great. It gives me a very good idea of how my calibration went and allows me to keep re-running til I get a good one. I did find that I needed to add one thing to make it run. One thing though (in case anyone else uses)- I ha…

  in SMI 500: Opensesame crashes with Pygaze for max screen mode, but runs fine otherwise. Comment by LJGS August 2017
• Thanks for the suggestion sebastiaan, unfortunately it seems that the SMI returns True no matter what happens during calibration so I cannot vet the calibrations that way. I am also having problems with the drift_correct. It seems to lag out the tas…

  in SMI 500: Opensesame crashes with Pygaze for max screen mode, but runs fine otherwise. Comment by LJGS August 2017
• Cheers. I actually have another question I am hoping to ask - it's a quickie, and you were helpful before, so I might chuck it here rather than spam the front page with threads. Do you know how to set the SMI to automatically keep attempting to ca…

  in SMI 500: Opensesame crashes with Pygaze for max screen mode, but runs fine otherwise. Comment by LJGS August 2017
• Ok, unfathomable pinheadery on my part caused this problem, it is solved. Seems I can't delete my post.

  in Experiment hangs indefinitely after finishing - Pygaze Comment by LJGS July 2017
• Hi all, for posterity note that I resolved this by switching my back end to PyGame. Now I am able to max screen after the SMI calibration runs, although I have to alt-tab back in which is a little bit inconvenient, Cheers

  in SMI 500: Opensesame crashes with Pygaze for max screen mode, but runs fine otherwise. Comment by LJGS July 2017
• Oh, it looks like the problem is more minor than I first thought. If I double press "escape" I am full screened back into the experiment and I am fine to go from there. So it looks like the eye tracker calibration is taking over the screen…

  in SMI 500: Opensesame crashes with Pygaze for max screen mode, but runs fine otherwise. Comment by LJGS July 2017
• Yes, that pretty much does what I want, cheers. Hmmm... I agree with you that I don't want to punish really early key presses (i.e., on the fixation dot). But I do want to punish keypresses any time from the blank onwards. Is there a way to effecti…

  in Adding a 'too fast!' contigency to a coroutine for early responses Comment by LJGS June 2017
• Cheers, that works perfectly. They now would not be able to respond within the first 100ms which should stop the majority of pre-empting. That was my original question, but I wonder is it possible to somehow also enable this for the blank screen pro…

  in Adding a 'too fast!' contigency to a coroutine for early responses Comment by LJGS June 2017
• Hi, thanks very much for your reply. I appreciate the support on what I think is a very niche requirement of mine. I think what you suggested with the repeat_cycle item sounds great- the trial ending with some type of feedback indicating they were …

  in Adding a 'too fast!' contigency to a coroutine for early responses Comment by LJGS June 2017
• Great, that seemed to work. Thanks Eduard

  in Ending a coroutine with a keypress Comment by LJGS May 2017
• Hi, sorry to be a bummer but I'm still having a problem with this. I believe I have implemented as suggested in that thread, but I am getting what seems to be inconsistent behaviour. Sometimes the trial will terminate with a keypress, sometimes not.…

  in Ending a coroutine with a keypress Comment by LJGS May 2017
• Perfect. Thanks very much.

  in Ending a coroutine with a keypress Comment by LJGS May 2017