Nelson Medina

@neurofinch.bsky.social

Neuroscientist interested in mechanisms of learning and behavior with a focus in connectomics. Postdoc - Kornfeld Lab Nelsmedina.github.io

A black hole in the early universe? Sometimes I like to imagine that I operate a telescope, not a microscope 😁. The hole in the middle of the image is actually a blood vessel. The stars are astrocytes🟡 in the human brain, interacting with beta-amyloid🔵. The brain is from a donor with #Alzheimer.

Confocal microscopy photo

Almost every line of this story would have been simply unbelievable a few months ago: —Pioneering cancer researcher; —*Arrested* at airport in Boston; —Now indefinite ICE detention in Louisiana; —"Crime": not declaring some frog-embryo samples for research. Read it. www.nbcnews.com/news/us-news...

New images could change cancer diagnostics, but ICE detained the Harvard scientist who analyzes them

Without scientist Kseniia Petrova’s expertise, no one can fully unlock the data’s potential, putting crucial advancements in early cancer detection at risk.

nbcnews.com

One of our undergraduate students in philosophy at Columbia, Mohsen Mahdawi, has been arrested by ICE at an immigration appointment (that he thought was for his citizenship application) in Vermont. I am standing up to say: hands off our students.

A package of research papers from the MICrONS (Machine Intelligence from Cortical Networks) consortium in Nature and Nature Methods provides a detailed map of mouse brain cell structure and connections, offering insights into how they relate to activity in the mouse brain. 🧪

The MICrONS Project

An unprecedented dataset of high resolution anatomical images of individual cells in mouse visual cortex, mapped on to their responses. This integrated view of function and structure lays a foundation for discovering the computational bases of cortical circuits.

go.nature.com

1/ Today, we publish the first of seven articles in a series exploring ‘Science Under Threat in the United States’. The authors discuss what they describe as the Trump administration's "assault" on science and scientists, and what the response should be. #StandUpForScience

A crowd of people at a protest. One is holding a sign that reads “science = progress”

Tonight an unbelievable **34,000 people** gathered for our Denver rally to take on billionaires and win our country back. This was the largest political gathering in Denver since Obama in 2008. Also bigger than the 2024 DNC. And the largest ever rally in Bernie’s career (and obviously, mine too).

AOC and Bernie in front of the rally crowd in DenverZoomed out crowd shot of 34,000 people in downtown Denver with Colorado mountains in the background

Today, along with 2,000 other NIH employees, I had to clear out my office 😭 It was truly the honor of my life to work with such incredibly passionate people focused on improving human health. I’ve never experienced a more positive culture where *everyone* cared about their job and serving others.

Office desk without any personal items or decor