Hello ladies and gentlemen, I’ve written a software using the psychopy library. In fact I’m running an experiment that plays video stimuli. So I’m using visual.window and MovieStim3. Each time I run the experiment the monitor’s brighness/gamma or whatever it is decreases. This affects the setting…

I’m using psychopy 1.90.2 Standalone on Windows 7. Interestingly the mouse pointer is not affected by the brightness change! I’m using the latest ATI drivers for a HD4000 Series. I’ve looked into the thread you suggested. Don’t think it is solved yet right?

If I understand correctly the visual.window is basically using pyglet?

Thanks for reporting this. I’ve raised an issue here .

Curious. My guess is that something has changed in Windows gamma tables (e.g. as part of a Win10 update) that means a very slight error when we try to reset the windows gamma to a previous level. (The fact that the mouse cursor isn’t affected is not surprising - that’s generally white and black and …

Thank you for the quick responses! I will test it tomorrow when I’m in the lab. Obviously the experiment needs to run on different computer configurations, although I’ve implemented that python 2.7 and windows 7 are required currently. If conditions are not met an error message will occur. I’m no…

[image] Max: Is there any possibility to prevent Psychopy code at all to influence the systems gamma settings? Can’t it just take the desktop values in some way? That’s pretty much what it is trying to do. The issue is that in reading and rewriting the system values, a slight cumulative disto…

Appologize me investigating any further, but I’m curious. Why does it need to write the settings in the first place.

Often people like to have linearised monitor output while psychopy is running, but not linearised for typical desktop usage. This is why psychopy attempts to return the system to the state it was when psychopy was started - otherwise any gamma settings within psychopy would be still active after the…

@djmannion how can I achieve this? That it is ignored I mean? I’m not really proficient and python yet.

Monitor Gamma or something else Brightness/Contrast/Light related decreases each time I run my experiment

Coding

aforren1 June 18, 2018, 2:42pm 2

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Monitor Gamma or something else Brightness/Contrast/Light related decreases each time I run my experiment

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