[2] Overall, our tests show that high-speed OLEDs (now also available at 480 Hz) are fantastic for all time-critical, fast paradigms. However, in additional tests, we also found a previously unreported problem with OLEDs monitors in slow paradigms:
🔥🧊Localized temperature-luminance interactions 🔥🧊
[6] Again, it's important to say that these OLEDs are great, especially for fast and time-critical paradigms, but this is a new weakness we discovered that may affect certain slow paradigms.
[4] In the figure (B) above, you see how the black checks of a checkerboard remain cooler than the white checks, even 20 sec later. The top panel (A) shows how a gray stimulus shown after a high-contrast black/white stimulus still differs in luminance (by about 1-2 cd/m^2) a minute later.
[5] So the effect is not large, but could be critical for some paradigms in which high-contrast stimuli are shown for long durations and technical afterimages would be critical, like in adaptation paradigms. For more details, see the paper.
Our detailed tests of high-speed OLED monitors for vision, eye-tracking, and EEG research are finally out in 𝐵𝑒ℎ𝑎𝑣𝑖𝑜𝑟 𝑅𝑒𝑠𝑒𝑎𝑟𝑐ℎ 𝑀𝑒𝑡ℎ𝑜𝑑𝑠. So why did it take 1.5 years to publish this? Because we discovered a new property of OLEDs that vision researchers should be aware of... [1]
Everyday visual experience tunes neural processing. Using fixation-related EEG, this new work shows how the N1 preview benefit depends on Chinese readers' prior experience with left-to-right vs. up-down reading. @umaurer.bsky.social
www.authorea.com/doi/full/10....
[3] We used thermal imaging to illustrate this problem: When you show bright stimuli for long durations (i.e., seconds), the OLED's pixels heat up locally. This warming then causes *subsequent* stimuli to be shown brighter at these locations. A small and slow, but devious form of image persistence!
[7] For more, see the published paper linked below (link.springer.com/article/10.3...). Also check out the work on OLEDs by Haila et al. (2025, J Vision). Both papers tests different things and are complementary; together providing a full picture on the strengths and weaknesses of OLEDs. [end]