🎤 ECVP 2026 Perception Lecture
Karl Gegenfurtner - University of Giessen

Colour Vision — Then and Now

Exploring fundamental questions in colour vision using VR, deep neural networks, and large-scale behavioural experiments.

Sponsored by Sage – Perception / i-Perception 🎨

#ECVP2026 #ColorVision

Good night all

Dreaming in Color

“Dreams are the touchstones of our character.” — Henry David Thoreau

#ExCatepillars #TheArtEclectic #dreamgarden #butterflies #symbolicfigure #fantasygarden #innerworld #dreamscape #imaginativeart #allegory #contemplation #colorvision

RobinReach

Shocking and true: Why Blue Is A Biological Glitch 💙
Blue bends the biology rulebook more than you think. See how your brain pulls off the trick 👀🧠
https://youtu.be/mxtACpNpPkg?si=n52rXPA9OtNnEBIs
#Science #ColorVision #Biology #Curiosity

📊 This paper by Crameri et al. (2020) shows why #color choice in figures matters.

Rainbow 🌈 & red–green 🛑❇️ colormaps distort gradients, create artificial boundaries, & exclude readers with #ColorVision deficiency. They quantify visual error & argue for perceptually uniform, #CVD friendly colormaps👍

A yellow, plastic bead platform shaped like a six-pointed star, filled with unbaked plastic beads. Black outlines. Each of the six points has a different color, with lighter tones in the middle and darker tones further away from the center. Colors clockwise: yellow (at one o'clock), green, blue, purple, red, orange). Bright white in the center.

A completed six-pointed star made from baked plastic beads. Black outlines. Each of the six points has a different color, with lighter tones in the middle and darker tones further away from the center. Colors clockwise: yellow (at one o'clock), green, blue, purple, red, orange). Bright white in the center.

Did some plastic bead crafting today with my kid. Photos before and after baking. I like how this turned out. Kid was also very helpful with actual color vision.

#Hama #Perler #Crafts #ColorVision

ColorVision Spyder2PRO CD

macintoshgarden.org/apps/colorvision-spyder2...

This is the software and drivers for the ColorVision Spyder2 colorimeter, used for color calibration of computer monitors and other displays.

#macgarden #drivershardwaresupport #2005 #colorvision

Impossible Colors: Are They Real? Unpacking the Scientific Debate on What Your Brain Can Perceive "Can you see reddish-green? Unpacking the science of 'impossible' colors, the opponent process theory, and the fierce debate over what we can perceive."

Reddish-Green and Yellowish-Blue: The Science Behind Colors That Shouldn't Exist
#ImpossibleColors #ColorVision #Neuroscience #OpticalIllusion #Science #FactRage #FactRageNews

tglm.us/LoVtc

I'm about to start training my chickens in basic voice commands: 'come on' and 'go to bed'. I use these to mean "follow me" and "go to your run". I know that chickens can respond to operant conditioning, so I wondered if anyone out there has any insights? #chickens #colourvision #colorvision #vision

Our sensory view of reality is always partial. Color is a prime example – we perceive it, but it's a subjective interpretation of physical phenomena, not the full objective truth. #ColorVision 3/7

The highly anticipated #OPG_JOSA_A Color Vision Feature Issue is now available! All 53 articles are free to access for the next 30 days. View now: opg.optica.org/josaa/virtua... #ColorVision #Psychophysics #Physiology

The intriguing zebra mantis shrimp at the Loveland Living Planet Aquarium

#MarineLife #Crustaceans #Spearer #Powerful #ColorVision #Photography

Scientists hijacked the human eye to get it to see a brand-new color. It's called 'olo.' Using an experimental technique called

Scientists hijacked the human eye to get it to see a brand-new color. It's called 'olo.' #Science #Biology #Neurobiology #HumanEye #ColorVision #Neuroscience

'Olo' is a brand-new color only ever seen by 5 people Using an experimental technique called "Oz," researchers stimulated the human retina such that people saw a brand-new color.

Wish I could see this

Scientists at UC Berkeley used laser-based "Oz" tech to stimulate M cones, creating "olo" a vivid blue-green color only visible through this method, not on screens.
🧪
#Neuroscience
#ColorVision

www.nature.com/articles/d41...

Relevant paper
www.science.org/doi/10.1126/...

This Children’s Book Can Spot Color Blindness Quietly & Early At No Cost - DesignTAXI.com Not just a book, it’s a vision check disguised as storytime.

Not just a book, it’s a vision check disguised as storytime. #ColorBlindness #InclusiveEducation #EarlyLearning #Accessibility #HiddenDisabilities #ColorVision #Navneet #GraphicDesign designtaxi.com/news/427343/...

Perzeption

Our PerZeption app’s tablet-based CVD screening got a spotlight in JOSAA! AIM & FInD methods showed strong results for efficient, accurate testing. Read more about how we’re advancing vision diagnostics in our latest blog perzeption.vision/Blog #VisionScience #ColorVision

Wear something green today!
#WeTheColorBlind #ColorVision #Mutants

We finally know whether people see colours differently, scientists say They're the questions we've asked since we were children: Are the colours that I see different from the colours that you see? Is my red your red, my yellow your yellow, and my slightly off-teal the same...

We finally know whether people see colours differently, scientists say #Science #Biology #Genetics #ColorVision #GeneticsOfPerception #HumanDiversity

0 comments0 comments0 comments AI generated podcast from research paper

I used the new Google #NotebookLM to produce a podcast episode of my paper "SMARTA: Automated testing apparatus for visual discrimination tasks" (Vagell et al., 2018).

#SMARTA #ColorVision #Touchscreen #Cognition #CognitiveResearch #Android #Lemurs

www.raymondvagell.com/post/smarta-...

“You’ll be visited by three spirits…”

#colorvision

A brown and black lemur is standing in front of a black touchscreen apparatus. The screen is showing green and red squares. The animal is touching the green square on the left side of the touchscreen using the left hand.

This apparatus was built for #ColorVision research but can be modified for any #cognitive #touchscreen research. I am currently working on SMARTA 2.0 for my dissertation with improvements on the apparatus.

Picture of an old spectroradiometer PR650

Any color vision experts on Bluesky? We want to color calibrate some monitors in our lab, but the spectroradiometer we have (Spectrscan PR650) doesn't work with the software we planned to use (Spectrashop 6).
#colorvision #colorcalibration #visionscience

Color-matching functions - first measured by Maxwell - are essential tools for designing and calibrating color devices. Brainard, Goossens and I discovered new ideas about these functions, with applications to human and computer vision. #colorvision #neuroscience
royalsocietypublishing.org/doi/1…

Test your color vision!
#eyetest #colorvision #vtuber

Article: Detection of conspicuous and cryptic food by common marmosets (Callithrix jacchus): An evaluation of the importance of color and shape cues.

Males outperform females when searching for green food against a green background.

www.sciencedirect.com/science/arti...

🧪 #primates #colorvision