Originally posted on March 25th, 2019. There has been at least one report of macOS 10.13 / 10.14 adding an extra one frame delay to graphics update times, causing experiment software graphics update times to be off by one retrace. We used the MilliKey DeLux light sensor to look into this further by testings the display change timing of… Continue reading macOS Display Timing
Originally posted on March 22, 2019. It looks like you need to be careful with your display settings in Windows 10, otherwise Windows 10 could be adding an extra frame delay to the display update times reported by your experiment software. We have found that if the Windows 10 Display -> Scale (and layout) setting is… Continue reading Windows 10 Display Timing
Originally posted on March 6, 2019. In this post we look at how to use the MilliKey DeLux light sensor upgrade to test visual stimulus onset timing using PsychoPy Coder by checking for a keyboard event. The MilliKey DeLux is an affordable and easy to use light sensor attachment for MilliKey response boxes. The MilliKey DeLux can generate light… Continue reading Test Visual Stimulus Onset Timing using Keyboard Events !?