Dragos Rezeanu
@dragosrevision.bsky.social
👀 Vision scientist, 🧠 Neuro PhD candidate, 🎨 Colorimetry nerd. Currently studying color vision and retinal circuits
Reposted by Dragos Rezeanu
A 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...
The effect presumably comes from the absence of S-cones in the fovea.
From Hinnerk Schulz-Hildebrandt:
arxiv.org/pdf/2509.115...
September 24, 2025 at 12:04 PM
A 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...
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 Rezeanu
Please be sure to check your kid's candy VERY carefully.
I just found an unbalanced centrifuge in a Snickers bar.
🍬☠️💥
I just found an unbalanced centrifuge in a Snickers bar.
🍬☠️💥
October 31, 2023 at 4:53 PM
Please be sure to check your kid's candy VERY carefully.
I just found an unbalanced centrifuge in a Snickers bar.
🍬☠️💥
I just found an unbalanced centrifuge in a Snickers bar.
🍬☠️💥
Reposted by Dragos Rezeanu
This only happens to you once
September 26, 2025 at 7:39 PM
This 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…
a man in a suit and tie is sitting in front of a window with the words what a waste above him .
ALT: a man in a suit and tie is sitting in front of a window with the words what a waste above him .
media.tenor.com
September 19, 2025 at 2:57 PM
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…
Reposted by Dragos Rezeanu
We 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
All traffic should not automatically be redirected from the old URLs, but please update your links.
Heads up: @pittophthalmology.bsky.social
Webvision – The Organization of the Retina and Visual System
www.webvision.pitt.edu
September 19, 2025 at 7:45 AM
We 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
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/...
Although knowing Microsoft this’ll also automatically invoke CoPilot for some godforsaken reason, just to juice the numbers… www.theverge.com/news/767551/...
Windows is getting a better em dash keyboard shortcut.
Rejoice, Windows and em dash fans! Microsoft is finally adding an improved Windows-wide keyboard shortcut for em dash and en dash. The change is part of the latest Windows 11 Dev channel builds, so it...
www.theverge.com
August 29, 2025 at 3:47 PM
FINALLY!
Although knowing Microsoft this’ll also automatically invoke CoPilot for some godforsaken reason, just to juice the numbers… www.theverge.com/news/767551/...
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...
The Root Cause Of Disease
YouTube video by Dr. Glaucomflecken
youtube.com
August 19, 2025 at 4:04 PM
“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
August 17, 2025 at 4:36 AM
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
I’m judging the 2025 TV Shootout today, just staring at OLED TVs in a dark room for 8 hours with a dozen other display nerds. I am in heaven
July 26, 2025 at 4:51 PM
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
July 9, 2025 at 3:01 PM
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 Rezeanu
If you put googly eyes on the Pillars of Creation you get muppets 😄😄
July 7, 2025 at 11:24 PM
If 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” 😂
It’s mapped to the word “shruggie” 😂
I actually do keep that shortcut on my phone
¯\_(ツ)_/¯
¯\_(ツ)_/¯
The difference between you writer nerds and me (some rando dummy on the internet) is that my saved shortcut is this:
¯\_(ツ)_/¯
¯\_(ツ)_/¯
July 7, 2025 at 1:20 AM
Literally the only macro on my phone and computer: ¯\_(ツ)_/¯
It’s mapped to the word “shruggie” 😂
It’s mapped to the word “shruggie” 😂
Reposted by Dragos Rezeanu
Me: "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."
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."
June 24, 2025 at 6:38 PM
Me: "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."
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:
June 21, 2025 at 4:09 AM
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:
Reposted by Dragos Rezeanu
![Comic. [planets and astronomical bodies in various shapes with comments pointing to them] Typical Exoplanet System: Giant planet orbiting so close that it’s actually rolling on the star’s surface; Hot Jupiter; Mini Neptune; Planet that could be habitable, if there’s a form of life that hates water but loves acid and being on fire; Cold Jupiter; Potentially habitable void; Hot Mars; Planet that may actually be in the habitable zone, according to a very optimistic modeling paper by some desperate postdocs; There’s a pulsar here but it’s probably fine; A waterworld paradise with beautiful oceans and warm— Wait, no, we just got new measurements, it’s a hellish steam oven; Mini Pluto; Earthlike data artifact; Wet Saturn; Either a gas giant or a fist-sized rock, depending which calibration method you use; Faint dust cloud that will cause several papers to be retracted; Somehow this whole system is smaller than the orbit of Mercury?!; Planet whose surface may host conditions suitable for rocks](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreiarfi2ggmv32pbpagsawnfvq3qpvww6qnptusklp2skmj7dqclewm@jpeg)
June 20, 2025 at 11:54 PM
Reposted by Dragos Rezeanu
PSA: 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
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
June 19, 2025 at 3:40 PM
PSA: 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
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) 🧵
June 18, 2025 at 2:53 PM
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) 🧵
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.
a woman in a blue dress is reaching for a book on a ladder
Alt: Belle from the animated beauty and the beast singing and gesturing while rolling across a wall of bookcases on a moving ladder
media.tenor.com
June 17, 2025 at 1:27 PM
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
*I have not heard this song in years
June 16, 2025 at 2:47 PM
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
*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! 🫠
If you need me I’ll be in the aisle that sells information-fire-hose-to-brain adapters…
Oooo they’re on sale! 🫠
May 16, 2025 at 11:07 PM
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! 🫠
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.
May 14, 2025 at 11:27 PM
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.
May 11, 2025 at 1:33 PM
(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.
Friday morning timeline cleanse: Seattle sunset at Green Lake from earlier this week.
May 2, 2025 at 3:50 PM
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/...
1/n
Novel color via stimulation of individual photoreceptors at population scale | Science Advances www.science.org/doi/10.1126/...
Novel color via stimulation of individual photoreceptors at population scale
Image display by cell-by-cell retina stimulation, enabling colors impossible to see under natural viewing.
www.science.org
April 20, 2025 at 8:13 PM
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!
Some of my favorite signs from yesterday’s #standupforscience rally in Seattle. Incredibly heartening to see the whole scientific community come together like this 🥲
March 8, 2025 at 8:20 PM
Some of my favorite signs from yesterday’s #standupforscience rally in Seattle. Incredibly heartening to see the whole scientific community come together like this 🥲