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Nelson Medina

@neurofinch

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

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14.11.2024
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Latest posts by Nelson Medina @neurofinch

A brown penguin chick of some kind. It looks very much like a man in a suit. It is bedraggled and miserable

A brown penguin chick of some kind. It looks very much like a man in a suit. It is bedraggled and miserable

Made it to Friday but at what cost

06.03.2026 03:24 πŸ‘ 6659 πŸ” 1306 πŸ’¬ 58 πŸ“Œ 93
songbird basal ganglia connectome

So proud of my new lab! Check out the recent songbird basal ganglia connectome - great job @alexandrarother.bsky.social !!
@jmrko.bsky.social !!

songbird-connectomics.org

29.10.2025 17:36 πŸ‘ 7 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

Every time you ask your PhD advisor a simple question.

16.06.2025 13:10 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Confocal microscopy photo

Confocal microscopy photo

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-amyloidπŸ”΅. The brain is from a donor with #Alzheimer.

05.06.2025 06:27 πŸ‘ 112 πŸ” 18 πŸ’¬ 1 πŸ“Œ 1
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it's beginning to look like a promise.

22.05.2025 00:04 πŸ‘ 63 πŸ” 7 πŸ’¬ 4 πŸ“Œ 0
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πŸŽ‰πŸ†πŸ†πŸ†We're delighted to announce 3 new @royalsociety.org Fellows here in Zoology!

Dr Gregory Jefferis, Prof Claire Spottiswoode and Dr Marta Zlatic are all now FRS.

Many, many congratulations!

Read more: bit.ly/3H4rCCk

20.05.2025 10:04 πŸ‘ 47 πŸ” 15 πŸ’¬ 2 πŸ“Œ 2
Harvard Medical School

Current situation at Harvard Medical School for NIH grants view.u.hms.harvard.edu?qs=3ed8c01b9...

15.05.2025 00:14 πŸ‘ 97 πŸ” 58 πŸ’¬ 9 πŸ“Œ 14
Preview
Kornfeld Lab

Thank you @neurocait.bsky.social for making an amazing website for the Kornfeld lab!!! 🀩

06.05.2025 17:32 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

So we can now do mark-recapture and similar experiments with... tardigrades. 🀯 πŸ§ͺ

"This precise control also enables detailed investigations into tardigrade behavior and movement patterns..."

pubs.acs.org/doi/10.1021/...

01.05.2025 21:43 πŸ‘ 60 πŸ” 19 πŸ’¬ 6 πŸ“Œ 3
Confocal micrograph

Confocal micrograph

My mom used to love #FluorescenceFriday, so I will keep posting in her memory ❀️

This photo shows neurons in the hippocampus accumulating phospho-tau in our monkey model of Alzheimer's Disease.

Markers: Dapi πŸ”΅, Neun πŸ”΄, pTau 422🟣, AT8🟑

02.05.2025 19:01 πŸ‘ 196 πŸ” 24 πŸ’¬ 7 πŸ“Œ 2
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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.

Almost every line of this story would have been simply unbelievable a few months ago:

β€”Pioneering cancer researcher;
β€”*Arrested* at airport in Boston;
β€”Now indefinite ICE detention in Louisiana;
β€”"Crime": not declaring some frog-embryo samples for research.

Read it.
www.nbcnews.com/news/us-news...

22.04.2025 01:32 πŸ‘ 29238 πŸ” 13605 πŸ’¬ 733 πŸ“Œ 848
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Nelson from MRC LMB will explain how song birds learn their songs 🐦

14.04.2025 17:22 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

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.

15.04.2025 00:19 πŸ‘ 57 πŸ” 13 πŸ’¬ 1 πŸ“Œ 3
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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.

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. πŸ§ͺ

09.04.2025 16:36 πŸ‘ 59 πŸ” 18 πŸ’¬ 1 πŸ“Œ 5
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LOL, this bag is perfect!
Perhaps parents will be hiding Easter potatoes this year instead?

14.04.2025 18:39 πŸ‘ 136 πŸ” 23 πŸ’¬ 2 πŸ“Œ 0

We’re going to annex Canada and invade Greenland but we can’t request return of an innocent man from El Salvador.

01.04.2025 15:26 πŸ‘ 34537 πŸ” 8103 πŸ’¬ 899 πŸ“Œ 354
A crowd of people at a protest. One is holding a sign that reads β€œscience = progress”

A crowd of people at a protest. One is holding a sign that reads β€œscience = progress”

1/ Today, we publish the first of seven articles in a series exploring β€˜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

25.03.2025 17:13 πŸ‘ 48 πŸ” 31 πŸ’¬ 1 πŸ“Œ 0

One week left to apply!

24.03.2025 12:57 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
AOC and Bernie in front of the rally crowd in Denver

AOC and Bernie in front of the rally crowd in Denver

Zoomed out crowd shot of 34,000 people in downtown Denver with Colorado mountains in the background

Zoomed out crowd shot of 34,000 people in downtown Denver with Colorado mountains in the background

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).

22.03.2025 01:29 πŸ‘ 106662 πŸ” 17936 πŸ’¬ 3345 πŸ“Œ 1900
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Europe looks to poach US researchers as Trump cuts funding Twelve EU capitals want programs to bring over American scholars.

Attracting talent, offering safe spaces is good. If it goes hand in hand with extra resources for science / education.

If not, these plans will create extra competition in already precarious systems.

The fact is, many European countries cut on research spending.

www.politico.eu/article/euro...

20.03.2025 06:11 πŸ‘ 115 πŸ” 36 πŸ’¬ 4 πŸ“Œ 1
NSERC - Latest News - Launch of the new Harmonized Tri-agency Scholarship and Fellowship programs As announced in Budget 2024, the scholarship and fellowship programs administered by the three federal research funding agencies – the Canadian Institutes of Health Research (CIHR), the Natural Sciences and Engineering Research Council (NSERC), and the Social Sciences and Humanities Research Council (SSHRC) – have been streamlined into a new harmonized talent program called the Canada Research Training Awards Suite (CRTAS) that will open for applications in summer 2025.

Changes to MSc, PhD and postdoc funding programs from πŸ‡¨πŸ‡¦ tri councils. Harmonization across councils, more awards, and new eligibility for international PhD and postdoc applicants!

14.03.2025 23:06 πŸ‘ 162 πŸ” 53 πŸ’¬ 2 πŸ“Œ 3

I was funded by a t32 part of my PhD. This is just meant to cause pain. But it’s so difficult to explain to people on the outside how misguided (insane) this is.

Hang tight, help your friends- might be all we have for a while.

13.03.2025 20:46 πŸ‘ 8 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
So the NIH grant terminations at Columbia turned out to be: 
-- all training grants (T series), which were all required to have extensive sections addressing diversity
-- grad student and postdoc fellowships (F series)
-- center and core grants (P series), including a cancer center, Alzheimer's center, diabetes center and more, and the vision core grant Michael Goldberg  has been PI of for 17 years that provides shared facilities (machine shop, imaging, ...) for vision researchers
-- a smattering of individual research grants, apparently targeting anything to do with covid, vaccines, or HIV, and including one study with title involving study of diverse tissues, i.e. with the verboten word diverse.

So the NIH grant terminations at Columbia turned out to be: -- all training grants (T series), which were all required to have extensive sections addressing diversity -- grad student and postdoc fellowships (F series) -- center and core grants (P series), including a cancer center, Alzheimer's center, diabetes center and more, and the vision core grant Michael Goldberg has been PI of for 17 years that provides shared facilities (machine shop, imaging, ...) for vision researchers -- a smattering of individual research grants, apparently targeting anything to do with covid, vaccines, or HIV, and including one study with title involving study of diverse tissues, i.e. with the verboten word diverse.

From my PhD advisor @kenmiller.bsky.social at Columbia. These are the grants that funded my PhD.

13.03.2025 14:50 πŸ‘ 82 πŸ” 35 πŸ’¬ 6 πŸ“Œ 4

Last year, I was overjoyed to receive an NIH NRSA fellowship to study toddler brains and caregiving effects on memory at Columbia. Last night, my grant was terminated.

11.03.2025 15:17 πŸ‘ 1007 πŸ” 372 πŸ’¬ 83 πŸ“Œ 17

Stream it

06.03.2025 08:58 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Looking beautiful Time Square. πŸ‡ΊπŸ‡¦

02.03.2025 04:29 πŸ‘ 33309 πŸ” 5411 πŸ’¬ 310 πŸ“Œ 176

β€œSince the entire staff was also placed on administrative leave, we have been locked out of our computers, and have no chance to assist in an orderly
transition in our work.” Sounds super efficient and safe

02.03.2025 01:10 πŸ‘ 48 πŸ” 10 πŸ’¬ 2 πŸ“Œ 0
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Currently appearing at UK bus-stops.

More of this pointed ridicule, please.

24.02.2025 22:10 πŸ‘ 45299 πŸ” 12133 πŸ’¬ 690 πŸ“Œ 540
Office desk without any personal items or decor

Office desk without any personal items or decor

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.

14.02.2025 23:31 πŸ‘ 6655 πŸ” 1209 πŸ’¬ 343 πŸ“Œ 74