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Jorge Mejias

@jorgefmejias.bsky.social
482 followers 159 following 81 posts

Associate Professor of Computational Neuroscience at the University of Amsterdam. Interested in large-scale brain models, neural dynamics and cognition.

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Reposted by Jorge Mejias
Guido Meijer @guidomeijer.com · 21/07/2026
I am happy to announce my very first senior author paper! Serotonin is known to abolish UP-DOWN state dynamics, which occur during sleep and anesthesia. There are several outstanding questions: What happens at short latencies? How widespread across the brain is it? 🧠 www.biorxiv.org/content/10.6...
biorxiv.org
Serotonin induces DOWN states across the anesthetized mouse forebrain
Serotonergic neurons in the dorsal raphe nucleus (DRN) project extensively throughout the forebrain, yet their influence on global network states remains controversial. Serotonin is implicated in regu...
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Reposted by Jorge Mejias
McSweeney's @mcsweeneys.net · 14/05/2026
Q: Does my thesis adviser pick the snake? A: No. Your adviser just tells the guy who picks the snakes how good your thesis was.
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FAQ: The “Snake Fight” Portion of Your Thesis Defense
March 13 2022 4/24/23 5/8/24 5/13/26 CALENDAR 2027
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Jorge Mejias @jorgefmejias.bsky.social · 21/04/2026
Our recent work on how shallow subcortical structures allow for a 'division of labor' in the brain has been featured at @neurosciencenews.bsky.social. I really enjoyed the mention about how these approaches would trigger a new 'subcortical AI' discipline. neurosciencenews.com/shallow-brai...
neurosciencenews.com
Shallow Brain Hypothesis: Subcortical Shortcuts Could Revolutionize AI - Neuroscience News
Researcher have developed a "Shallow Brain" AI model that mimics the connections between the cortex and subcortical regions, allowing for faster and more efficient decision-making.
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Jorge Mejias @jorgefmejias.bsky.social · 01/04/2026
Deadline for the summer school now extended to April 8. Last chance, this time for real :)
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Jorge Mejias @jorgefmejias.bsky.social · 30/03/2026
Reminder: last chance to apply for the CSHA Computational&Cognitive Neuroscience Summer School in Suzhou, China. Deadline is this Wednesday April 1st!
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Jorge Mejias @jorgefmejias.bsky.social · 17/03/2026
That one hurts, and I'm definitely going to keep it 😂
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Jorge Mejias @jorgefmejias.bsky.social · 25/02/2026
Please repost: Applications for the CSHA Computational and Cognitive Neuroscience Summer School are open! Join us this summer in Suzhou for a fantastic and unique experience. Deadline April 1st: ccnss.net
ccnss.net
Computational and Cognitive Neuroscience Summer School
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Alex Fornito @alexfornito.bsky.social · 09/02/2026
Interested in cortical wave dynamics? Check out our review on the physics, physiology, and psychology of cortical waves led by J Cruddas with @jchrispang.bsky.social, out now in @cp-neuron.bsky.social: www.sciencedirect.com/science/arti...
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Nicole Rust @nicolecrust.bsky.social · 10/02/2026
This work by @mariaeckstein.bsky.social et al is a nice example of how progress in psychology can be expedited with machine learning. How long before this type of approach is expected for models-of-behavior papers? My guess: not long. (If you are a trainee, nudge!) www.nature.com/articles/s41...
nature.com
Hybrid neural–cognitive models reveal how memory shapes human reward learning - Nature Human Behaviour
Using artificial neural networks applied to human data, Eckstein et al. show that good models of reinforcement learning require memory components that track representations of the past.
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Jorge Mejias @jorgefmejias.bsky.social · 03/02/2026
For Spanish researchers interested in postdoc positions: my lab at Amsterdam is looking for candidates to apply for a Ramon Areces postdoctoral fellowship, to work for 2 years on compneuro and digital brains. Deadline Feb 23. Please spread the word! More info: www.fundacionareces.es/fundacionare...
fundacionareces.es
Convocatorias - Fundación Ramón Areces
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Alex Fornito @alexfornito.bsky.social · 26/01/2026
Our latest preprint on how regional cellular, molecular, and other forms of heterogeneity shape macroscopic wave dynamics is now out: www.biorxiv.org/content/10.6... For a full thread, see: x.com/_victorbarne...
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Jorge Mejias @jorgefmejias.bsky.social · 11/01/2026
Great work, Nikos!
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Jorge Mejias @jorgefmejias.bsky.social · 05/01/2026
Starting 2026 on the right foot: my promotion to associate professor finally happened! Thanks to my lab and to the colleagues who significantly helped along the way, especially those who served in the committee and/or provided support letters. Now, to keep working towards new goals!
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Fabian Sinz @sinzlab.bsky.social · 19/12/2025
🔬 We're hiring a Junior Group Leader for Data-Driven Digital Twins/System Models in medicine/life sciences at @uni_goettingen! Perfect opportunity for early-career researchers who want to: - Lead their own research group - Work at the intersection of AI, simulation, and biomedicine
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Jorge Mejias @jorgefmejias.bsky.social · 20/11/2025
Very interesting work on extending the usefulness of biophysical neural network models (towards performing tasks, fitting experimental data, or all of the above).
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Jorge Mejias @jorgefmejias.bsky.social · 12/11/2025
In Spanish this time: si estás en Madrid este viernes y te interesa la mente humana (como arte o como ciencia), no te pierdas el evento de Sciencia en el Hospital 12 de Octubre. Allí te esperamos :)
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Jorge Mejias @jorgefmejias.bsky.social · 11/11/2025
Chatting with a brain scan --quite interesting work from Tim Kietzmann's lab:
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Matteo Carandini @carandinilab.net · 03/11/2025
Europe's MSCA postdoctoral fellowships are now attracting many researchers who would have gone to the US. So the payline has dropped below 10% (~1,600 fellowships to 17k applicants). Super tough situation. One more reason to double the next Horizon budget, as proposed by the EU Commission.
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Leonardo Dalla Porta @ldallap.bsky.social · 29/10/2025
Timely by Xiao-Jing Wang Bifurcations—an underexplored concept in neuroscience—can help explain how small differences in neural circuits give rise to entirely novel functions. www.thetransmitter.org/neural-dynam...
thetransmitter.org
The missing half of the neurodynamical systems theory
Bifurcations—an underexplored concept in neuroscience—can help explain how small differences in neural circuits give rise to entirely novel functions.
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Dan Levenstein @dlevenstein.bsky.social · 29/10/2025
Really hoping bifurcations are the new manifolds. What a time to be alive 🥲
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Jorge Mejias @jorgefmejias.bsky.social · 16/10/2025
Surprisingly good 'AI reviewer' tool from @odedrechavi.bsky.social to help you find gaps and improve your manuscripts. I've only run it through a couple of my (published) papers, but the feedback was mostly on point and in line with our ongoing directions for improvements: www.qedscience.com
qedscience.com
q.e.d Science
Critical Thinking AI for constructive criticism and science evaluation
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Jorge Mejias @jorgefmejias.bsky.social · 08/10/2025
Save the date: October 31, Amsterdam. A fantastic event for those interested in neurotech and neuro-AI, with a twist on how international collaborations can boost these fields. Please spread the word and join us there if you can! docs.google.com/forms/d/e/1F...
docs.google.com
Cajal Encounters
Neuroscience meets NeuroAI. Join us in this event to highlight success stories and foster collaboration in Neuroscience between Spain and the Netherlands! Event Information Date: 31st October (afterno...
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Dan Levenstein @dlevenstein.bsky.social · 08/10/2025
The Wu Tsai Institute at Yale is hiring another faculty member in neurocomputation. Come work with us in a growing community at the interface of neuroscience and AI! More info below 👇
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Dan Levenstein @dlevenstein.bsky.social · 08/10/2025
Come do a postdoc at the Wu Tsai Institute! WTI fellows have freedom to work with anyone at the institute, and preference is given to applicants who want to work on interdisciplinary projects with multiple faculty mentors. If you’re interested to work with me, please reach out!
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Jorge Mejias @jorgefmejias.bsky.social · 02/10/2025
Quite a good guideline about how to write a paper, I think: dx.plos.org/10.1371/jour...
dx.plos.org
How to write a scientific paper in fifteen steps
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Reposted by Jorge Mejias
The Viking (Gunnar Blohm) @gunnarblohm.bsky.social · 02/10/2025
www.nature.com/articles/d41...
nature.com
How to find the papers you need to read — and avoid the ones you don’t
With thousands of papers being published everyday, it can be a task working out which matter. Here are some tips to help you decide.
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Reposted by Jorge Mejias
Alessandro Ingrosso @aingrosso.bsky.social · 22/09/2025
Please RT - Open PhD position in my group at the Donders Center for Neuroscience, Radboud University. We're looking for a PhD candidate interested in developing theories of learning in neural networks. Applications are open until October 20th. For more info: www.ru.nl/en/working-a...
ru.nl
PhD Position: Theory of Learning in Artificial and Biologically Inspired Neural Networks | Radboud University
Do you want to work as a PhD candidate Theory of Learning in Artificial and Biologically Inspired Neural Network? Check our vacancy!
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The Transmitter @thetransmitter.bsky.social · 18/08/2025
An explosion in open-neuroscience datasets has created a new generation of researchers with expertise in data science. But new restrictions put our research programs in jeopardy, writes Elvisha Dhamala @elvisha.bsky.social. #neuroskyence www.thetransmitter.org/open-neurosc...
thetransmitter.org
Deleting data or stopping its collection will erase years of valuable brain research
An explosion in open-neuroscience datasets has created a new generation of researchers with expertise in data science. But new federal restrictions in the United States put their research programs in…
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Reposted by Jorge Mejias
PessoaBrain @pessoabrain.bsky.social · 16/08/2025
𝗖𝗼𝗴𝗻𝗶𝘁𝗶𝗼𝗻 𝗶𝘀 𝗲𝗺𝗲𝗿𝗴𝗲𝗻𝘁 𝗶𝗻 𝘁𝗵𝗲 𝗯𝗿𝗮𝗶𝗻 by Earl K Miller, Scott L Brincat, Jefferson E Roy This promises to be a must read One day we should create an online journal club to just read these kinds of papers! #neuroskyence doi.org/10.1016/j.co...
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Joao Barbosa @jbarbosa.org · 10/08/2025
Sad to miss #CCN2025. It will be the 1st conference where a PhD working w/ me will speak 😭 go see Lubna's talk (Friday) about distributed neural correlates of flexible decision making in 🐒, work done in collaboration w/ @scottbrincat.bsky.social @siegellab.bsky.social & @earlkmiller.bsky.social
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Iris Groen @irisgroen.bsky.social · 10/08/2025
After preparing for a full year together with @neurosteven.bsky.social and all other amazing organizers of @cogcompneuro.bsky.social, #CCN2025 is finally here! While I'm proud of the entire program we put together, I'd now like to highlight my own lab's contributions, 6 posters total:
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Jorge Mejias @jorgefmejias.bsky.social · 10/08/2025
#CCN2025 is starting tomorrow in Amsterdam, and our lab is presenting and contributing in several ways. A summary thread:
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Jorge Mejias @jorgefmejias.bsky.social · 08/08/2025
If you are planning to attend #CCN2025 in Amsterdam next week and are interested in recurrent network models of decision making, please join our Satellite Workshop on Monday at 3pm. We'll have @summerfieldlab.bsky.social , @veronicachelu.bsky.social and many more! sites.google.com/view/rnnsmak...
sites.google.com
RNNs making decisions
The goal of this CCN workshop is to host a scientific discussion on the study of decision-making using recurrent neural networks. The selected speakers will cover all aspects of decision-making, from ...
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Buitengebieden @buitengebieden.bsky.social · 08/08/2025
It’s Friday! 🎉
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Claudia Clopath Lab @clopathlab.bsky.social · 08/08/2025
We were asked to write a commentary on NeuroAI for Nat. Rev. Neuro. with Sadra Sadeh, so here it is: www.nature.com/articles/s41...
nature.com
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Juan Gallego @juangallego.bsky.social · 01/08/2025
🚨New paper🚨 Neural manifolds went from a niche-y word to an ubiquitous term in systems neuro thanks to many interesting findings across fields. But like with any emerging term, people use it very differently. Here, we clarify our take on the term, and review key findings & challenges rdcu.be/ex8hW
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Matt Perich @mattperich.bsky.social · 29/07/2025
Check out our new review/perspective (w/ @juangallego.bsky.social & Devika Narain) on neural manifolds in the brain! It was a lot of fun to think through these ideas over the past couple of years, and I'm excited it's finally out in the world! 🔗: www.nature.com/articles/s41... 📄: rdcu.be/ex8hW
nature.com
A neural manifold view of the brain - Nature Neuroscience
Recent advances in neuroscience have revealed how neural population activity underlying behavior can be well described by topological objects called neural manifolds. Understanding how nature, nurture...
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Jorge Mejias @jorgefmejias.bsky.social · 08/07/2025
New paper @pnas.org with Lola Beerendonk, Jan Willem de Gee, Simon van Gaal and others, on pharmacological shifts of performance. We combine psychophysics and pupillometry with computational modeling to provide interesting insights linked to PV-SST-VIP circuits: www.pnas.org/doi/10.1073/...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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Yoni Couderc @yonicouderc.bsky.social · 04/07/2025
New group leader position in computational neuroscience @ Neurocentre Magendie, INSERM, Bordeaux! More info here: www.bordeaux-neurocampus.fr/group-leader... ⚠️ Application deadline: end of September 2025 @neurobordeaux.bsky.social @neuromagendie.bsky.social
bordeaux-neurocampus.fr
Group leader tenured-track position in Computational Neuroscience - Bordeaux Neurocampus
Neurocentre Magendie
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Tim Vogels @tpvogels.bsky.social · 02/06/2025
We just pushed “Memory by a 1000 rules” onto bioRxiv, where we use clever #ML to find #plasticity quadruplets (EE, EI, IE, II) that learn basic stability in spiking nets. Why is it cool? We find 1000s!! of solutions, and they don’t just stabilise. They #memorise! www.biorxiv.org/content/10.1...
biorxiv.org
Memory by a thousand rules: Automated discovery of functional multi-type plasticity rules reveals variety & degeneracy at the heart of learning
Synaptic plasticity is the basis of learning and memory, but the link between synaptic changes and neural function remains elusive. Here, we used automated search algorithms to obtain thousands of str...
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Jorge Mejias @jorgefmejias.bsky.social · 02/05/2025
Dutch universities want to prohibit many educational programs from being taught in English, folding to the government's demands. If you're against this serious hit to the international prestige and quality of Dutch institutions, consider signing this letter: openletter.earth/against-lang...
openletter.earth
Against Language Barriers: A Call to Protect International Education in Dutch Academia
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Jorge Mejias @jorgefmejias.bsky.social · 18/04/2025
Save the date: for those in the Amsterdam area, the date for this year's Amsterdam Neuroscience Meeting is a bit later than usual: January 16th 2026. It's a great opportunity to connect with other researchers in the Amsterdam area. Hopefully see you there!
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Jorge Mejias @jorgefmejias.bsky.social · 15/04/2025
Fantastic initiative, and a prime example of the benefits of large-scale scientific collaboration. Thanks @jeromelecoq.bsky.social for leading the effort, looking forward to the next steps!
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Jorge Mejias @jorgefmejias.bsky.social · 07/04/2025
Upcoming (April 28 - May 2) free, 5-day webinar "Advancing Computational Neuroscience Through Collaborative Learning". With speakers from Afrika, US and Europe, and organized by Jessica Oparebea and collaborators at the University of Ghana. Please spread the word, and sign up if you're interested!
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Jorge Mejias @jorgefmejias.bsky.social · 31/03/2025
Remember, today is the last day to apply for the Computational and Cognitive Neuroscience Summer School, June 29-July 20 2025, Suzhou (China). Join us this summer! Link: www.csh-asia.org?content/2621=
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Tim Behrens @behrenstimb.bsky.social · 25/03/2025
Science is under threat in the US. @elife.bsky.social have commissioned a series of articles discussing the implications and what we can do. The first three articles are now live. More to follow: elifesciences.org/articles/106... elifesciences.org/articles/106... elifesciences.org/articles/106...
elifesciences.org
Science Under Threat in the United States: How scientists and institutions should respond
Individual researchers and university leaders need to make the case for science to their elected representatives and to the public at large.
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Jorge Mejias @jorgefmejias.bsky.social · 24/03/2025
Fantastic textbook of theoretical and computational neuroscience by @xjwanglab, covering everything from biophysical circuits to cognition, full-brain models, neuro-AI and computational psychiatry. I can't recommend it enough for anyone in the field www.taylorfrancis.com/books/mono/1...
taylorfrancis.com
Theoretical Neuroscience | Understanding Cognition | Xiao-Jing Wang |
This textbook is an introduction to Systems and Theoretical/Computational Neuroscience, with a particular emphasis on cognition. It consists of three parts:
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Marieke van Vugt @mvugt.bsky.social · 24/03/2025
There is again a model-based neuroscience summer school from Aug 4-8th in Amsterdam! modelbasedneurosci.com
modelbasedneurosci.com
Model-Based Neuroscience and Cognition Summer School
Visit the post for more.
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Jorge Mejias @jorgefmejias.bsky.social · 20/03/2025
Fantastic opportunity to join an equally fantastic lab!
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Jorge Mejias @jorgefmejias.bsky.social · 18/03/2025
Our new paper on ignition during conscious perception, spearheaded by @ulysse-klatzmann.bsky.social and @seanfw.bsky.social. A detailed large-scale brain model tackling fundamental questions and presenting experimental predictions tested and confirmed. More details in Ulysse's thread below!
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