Olaf Dimigen
@olafdimigen
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Studying the dynamics of Active Vision and Cognition, often with combined eye-tracking/EEG. Tenured Assist. Prof. @univgroningen. On Bluesky.
Groningen, The Netherlands
Joined January 2013
Are you looking for a precise monitor for vision science, eye-tracking, or EEG? In a new preprint, we tested an interesting new display option with excellent timing performance: "High-speed" organic light-emitting diode (OLED) monitors. A summary:🧵[1/n]
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RT @SenMarkKelly: Just left Ukraine. What I saw proved to me we can’t give up on the Ukrainian people. Everyone wants this war to end, but….
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RT @vilotijevic_ana: When I know your #Mind, I will paint your eyes 😉 Check out the blog I wrote for @mw_groningen! . .
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RT @GeoConfirmed: GeoConfirmed UKR - Misinformation by President Trump. While we typically refrain from political commentary, President Do….
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RT @niles_eldredge: Bluesky is emerging as the new platform for science
mikeyoungacademy.dk
Scientific Twitter is about to find its true successor. And it is not X. This, our latest release, shows that the Bluesky network of scientists is growing — and growing.
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RT @ANuthmann: Check out our follow-up paper on #WeaponFocus in CR:PI, where we ask the question: Is a knife the same as a plunger? https:/….
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Summary: At less than $1000, these OLEDs look like a very appealing option and true CRT-replacement, even for the underfunded visual scientist. All details in preprint, written with co-author Arne Stein: [end].
biorxiv.org
The recent introduction of organic light-emitting diode (OLED) monitors with refresh rates of 240 Hz or more opens new possibilities for their use as precise stimulation devices in vision research,...
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We also identified some caveats: Proper monitor settings are crucial to prevent luminance saturation artifacts (due to Auto-Brightness Limiting). See preprint for details. [10/n]
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(2) EEG: Accurate display of fast flickering stimuli (here: 60 Hz at 4 frames/cycle), as for example in Rapid invisible frequency tagging (RIFT) [9/n]
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(1) Eye-tracking: Gaze-contingent display updates with latencies around 7 ms. [8/n]
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The OLED's response times allow for temporally precise stimulation that would otherwise require a high-speed projector. Two examples: [7/n].
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Spatial uniformity and viewing angles were also very decent - and again much better than those of the tested LCDs. [6/n]
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Here's a comparison to a CRT & LCD. The OLED's response times (~0.3 ms) are on par with a CRT, minus the phosphor persistence. Latencies were much better than for the LCD. [5/n]
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At 240 Hz, the OLED can draw stimuli with finely graded durations. Here is an example of a white stimulus shown for two frames (8.33 ms). Note the almost square wave-like luminance response: [4/n]
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OLED panels are known for their image quality. Unlike LCDs, their pixels are self-lit, respond rapidly, and can show true black. Only recently, however, OLEDs with high 240 Hz refresh rates became available. We compared one promising model (ASUS PG27AQDM) to CRTs & LCDs: [3/n].
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Cathode-ray tube (CRT) monitors have long been the gold standard for temporal precision, but are nowadays hard to find. Many labs have moved to LCDs, which suffer from comparatively sluggish and temporally dependent responses, poor viewing angles, and low contrasts. [2/n].
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RT @essem_info: Thank you to everyone who made #ESSEM2024 in Athens such a wonderful experience! What could be better than a week of discus….
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On the ferry to Athens, looking forward to the 6th European Summer School on Eye Movements #ESSEM2024
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"Neural mechanism underlying preview effects and masked priming effects in visual word processing". Now available open access in AP&P: . @Coral_Huangxin @urs_maurer.
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RT @KordingLab: Neuromatch Academy teaches thousands of students about neuroscience, deep learning, climate. We uniquely have export permit….
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