Dragos Rezeanu
👀 Vision scientist, 🧠 Neuro PhD candidate, 🎨 Colorimetry nerd. Currently studying retinal circuits at the University of Washington 🎓
- Princess Bride and puppy snores, not a bad way to close out the year : ) Happy New Year everybody 🎆🍾
- Reposted by Dragos Rezeanu
- Reposted by Dragos Rezeanu
- Reposted by Dragos Rezeanu[This post could not be retrieved]
- Reposted by Dragos RezeanuA nice shift in perceived colour between central and peripheral vision. The fixated disc looks purple while the others look blue. The effect presumably comes from the absence of S-cones in the fovea. From Hinnerk Schulz-Hildebrandt: arxiv.org/pdf/2509.115...
- Reposted by Dragos RezeanuPlease be sure to check your kid's candy VERY carefully. I just found an unbalanced centrifuge in a Snickers bar. 🍬☠️💥
- Reposted by Dragos RezeanuThis only happens to you once
- Reading the Lord of the Rings for the first time in ~20yrs and I forgot how much of Fellowship is just songs. Feeling so cheated that the movie left out the song about the cat, the dog, and the cow that got super drunk one night, broke a fiddle, and scared the cow so bad it jumped over the moon…
- And what about Sam’s song about the guy who kicked the troll because the troll dug up his relative’s shinbone to chew on!? In a wry twist the guy either breaks his foot or has it eaten by the troll (conclusion unclear). Absolute banger! It’s like Peter Jackson didn’t even read the books…
- Reposted by Dragos RezeanuWe are pleased to announce that Webvision has been fully migrated to our new home at the University of Pittsburgh. www.webvision.pitt.edu All traffic should not automatically be redirected from the old URLs, but please update your links. Heads up: @pittophthalmology.bsky.social
- FINALLY! Although knowing Microsoft this’ll also automatically invoke CoPilot for some godforsaken reason, just to juice the numbers… www.theverge.com/news/767551/...
- “But is there a rootier cause? Only wellness influencers know for sure…” youtube.com/shorts/R-XO5...
- Installing Ubuntu on a separate SSD so I can dual boot my PC… so this is what a slippery slope feels like
- This… this is my Elysium #ColorimetryNerdHeaven
- The local Safeway just started locking up their ice cream and I wanna take whatever moron executive thought this was a good idea and toss them casually into a wood chipper… this might seem extreme but I feel it’s justified. NEVER get between a stressed out grad student and their Ben & Jerry’s
- Reposted by Dragos RezeanuIf you put googly eyes on the Pillars of Creation you get muppets 😄😄
- Literally the only macro on my phone and computer: ¯\_(ツ)_/¯ It’s mapped to the word “shruggie” 😂
- Reposted by Dragos RezeanuMe: "What did you learn at journal club today?" Intern: "That one day I'm going to publish a paper, and a bunch of people are going to sit around a table and rip it apart."
- It’s been a weird, unproductive week at the lab and I’m feeling a little down. So here are 10 cool facts about vision:
- 1. Our photoreceptors work backwards from how you’d expect: rods and cones respond to light by releasing LESS neurotransmitter. In a very real sense they’re “excited” by darkness, not light.
- 2. The term color blind is a misnomer. True color blindness (B&W vision) is extremely rare. Most people who are diagnosed as “color blind” have a form of red/green color vision deficiency, and many of them are “color anomalous” meaning they retain some red/green vision.
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View full thread*300 characters = lots of oversimplification in all of the above, but generally correct and super interesting (IMO). Smarter folks than me please forgive any oversights and feel free to add context or share your favorite vision facts!
- Reposted by Dragos RezeanuExoplanet System xkcd.com/3103/
- Reposted by Dragos RezeanuPSA: around 5-8% of the population has a color vision impairment for red/green. Many talks at #2025ICDB still use red-green LUTs on slides that are not accessible to everyone. Changing to more accessible colors is doable and easy. We can do better. #devbio #ICDB2025 #WeTheColorBlind
- Question for my science peeps. I’ve been resisting using AI coding tools for almost anything beyond documentation looking while building my data analysis pipeline for a few reasons. From most practical to most personal: (1/n) 🧵
- 1) I feel strongly that I should know and understand what every single line in my code is doing. A mathematical error/hallucination/magic number in my data analysis code would be an absolute disaster. (2/n)
- 2) Even if it’s 100% accurate, I feel like it takes away my opportunity to learn and integrate that knowledge into my bones. 3) My experience as a writer tells me the writing it produces is bland and mediocre… I’m a less experienced coder but why would I assume its code is any better? (3/n)
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View full threadDocumentation lookup* … dammit autocorrect. (Actual fin)
- Update: this morning’s ear worm is “Belle” from Beauty and the Beast so… a distinct improvement I’d say! Although my papa is definitely going to get kidnapped later so not all good news.
- Woke up this morning with Maroon 5 - Payphone* stuck in my head from the moment I hit consciousness… that’s the modern equivalent of a dark omen, right? I’m not misreading this? *I have not heard this song in years
- Don’t mind me, just wading into a new subfield of vision research with decades of extremely thorough and contentious research across about 10 animal models plus human psychophysics. If you need me I’ll be in the aisle that sells information-fire-hose-to-brain adapters… Oooo they’re on sale! 🫠
- Lately I've been struck by a wave of nostalgia for buying things in person... in a store... where I can actually see and touch and try them. This is especially true for electronics. I don't know what caused it but I'm just so tired of ordering shit online, convenience be damned.
- Reposted by Dragos Rezeanu(1/6) Thrilled to share our triple-N dataset (Non-human Primate Neural Responses to Natural Scenes)! It captures thousands of high-level visual neuron responses in macaques to natural scenes using #Neuropixels.
- Triple-N Dataset: Non-human Primate Neural Responses to Natural Scenes biorxiv.org/content/10.1101/202…
- Friday morning timeline cleanse: Seattle sunset at Green Lake from earlier this week.
- It’s incredible how adaptive optics has absolutely transformed vision research 🤯 it’s not an exaggeration to say AO techniques are ushering in a new age of psychophysics research in vision science. And that’s just one of several applications!
- This paper is the result of >20 yrs of hard work by talented students, postdocs and collaborators, but none more than my co-author Ren Ng and his team in EECS. 1/n Novel color via stimulation of individual photoreceptors at population scale | Science Advances www.science.org/doi/10.1126/...
