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Joao Barbosa

@jbarbosa.org

3.6K followers 820 following 1.2K posts

INSERM group leader @ Neuromodulation Institute and NeuroSpin (Paris) in computational neuroscience. How and why are computations enabling cognition distributed across the brain? Expect neuroscience and ML content. jbarbosa.org

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Joao Barbosa @jbarbosa.org · Feb 2

A good time to repost this banger from 'The Responsibility of Intellectuals' by Noam Chomsky in '67

Vance is absolutely correct: universities are - and must be - the enemy.

This is why the Right is attacking scholarship globally. They want to end the privilege Chomsky's talking about in 67

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Reposted by Joao Barbosa

Jens-Bastian Eppler @j-b-eppler.bsky.social · 2h

Loved working with our amazing outreach team on this short video about representational drift! @crmatematica.bsky.social

🧠🧪

In it, I explain the points we make in our recent review in CONEUR:

doi.org/10.1016/j.co...

Centre de Recerca Matemàtica | CRM-CERCA @crmatematica.bsky.social · 1d

Memories feel fixed, but the brain never stands still.

@j-b-eppler.bsky.social talks about representational drift; how memories remain stable even as the neurons behind them constantly change.

youtu.be/z63fmYSBcB0

#Neuroscience #Mathematics #Memory #Brain #CognitiveScience #Neurobiology #Research

Why Your Brain Is Never Still: Representational Drift and Statistical Learning

YouTube video by Centre de Recerca Matemàtica

youtu.be

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Joao Barbosa @jbarbosa.org · 1h

Okok I'll read it :)

Joao Barbosa @jbarbosa.org · 18h

Btw just tbc i initially thought you were citing @bio-emergent.bsky.social paper

www.biorxiv.org/content/10.1...

High-dimensional neuronal activity from low-dimensional latent dynamics: a solvable model

Computation in recurrent networks of neurons has been hypothesized to occur at the level of low-dimensional latent dynamics, both in artificial systems and in the brain. This hypothesis seems at odds ...

www.biorxiv.org

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Joao Barbosa @jbarbosa.org · 18h

I haven't read the paper carefully I admit, but seems like a good example of how low rank connectivity enables deep understanding of networks with more than a couple of neurons

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Joao Barbosa @jbarbosa.org · 1d

What do you mean? This is a great example that we can, even for the case where data is high D! :)

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Reposted by Joao Barbosa

Ann-Sophie Barwich @smellosopher.bsky.social · 1d

Letters of rec batch done, too.

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Reposted by Joao Barbosa

Tom Gauld @tomgauld.bsky.social · 2d

My cartoon for this week’s @newscientist.com

A comic strip in six panels. The panels inerlock like a jigsaw with knobs and sockets. Two stick figures walk right to left through all the panels.

Panel 1: Person 1 says "I hear you're working on a new theory."
Panel 2 & 3: Person 2 says: "Yes, I'm calling it the jigsaw model. I think it could change our whole View of reality."
Panel 4: Person 1 says "When Will you publish?:
Panel 5: Person 2 says "But a couple of things are still bothering me." (this piece/panel is a bit squint)
Panel 6: This piece is rotated ninety degees and fits to the others very badly. Person 2 is saying "Soon. I feel like I'm really close"
A second look at the whole comic shows that the last two panels read in the wrong order because the jigsaw has been put together incorrectly.

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Reposted by Joao Barbosa

Tatiana Engel @engeltatiana.bsky.social · 2d

A study led by Cina Aghamohammadi is now out in ‪@natcomms.nature.com‬! We developed a mathematical framework for partitioning spiking variability, which revealed that spiking irregularity is nearly invariant for each neuron and decreases along the cortical hierarchy.
www.nature.com/articles/s41...

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Reposted by Joao Barbosa

Max Roser @maxroser.bsky.social · 2d

What we die from vs. what we hear in the news.

Terrorism and homicides account for less than 1% of deaths, but for more than half of all media stories about death in the US — whether in the New York Times, the Washington Post, or Fox News.

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Joao Barbosa @jbarbosa.org · 2d

😵‍💫

Joao Barbosa @jbarbosa.org · 2d

What do you think about this, also no go?

soterixmedical.com/research/hd/...

MxN-PRO – Soterix Medical

soterixmedical.com

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Reposted by Joao Barbosa

James Briscoe @jamesbriscoe.bsky.social · 4d

The @crick.ac.uk is recruiting Early Career Group Leaders

- Lab set-up, research costs, salaries for up to 5 researchers
- Support for up to 12 years
- Access to our core facilities
- Competitive salary
- Fantastic colleagues
- All areas of biology

Deadline 27 Nov

www.crick.ac.uk/careers-stud...

Early career group leaders

We appoint researchers from across biology and biomedicine to set up their first groups at the Crick.

www.crick.ac.uk

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Joao Barbosa @jbarbosa.org · 3d

RIP tDCS

JJ @jjodx.bsky.social · 3d

One of my two last (ever) papers on tDCS:
Does anodal tDCS over M1 really enhance motor sequence learning? A non-replication of earlier findings in a double-blind, pre-registered large-sample study in humans
www.medrxiv.org/content/10.1...

Does anodal tDCS over M1 really enhance motor sequence learning? A non-replication of earlier findings in a double-blind, pre-registered large-sample study in humans

Background Transcranial direct current stimulation (tDCS) is one of the most widely used noninvasive neuromodulation methods. Despite its popularity, some recent studies highlighted issues about the r...

www.medrxiv.org

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Reposted by Joao Barbosa

Gaël Varoquaux @gaelvaroquaux.bsky.social · 4d

A speech about what drives me, how science and open source are bitter victories, unable to make improve the world if society does not embrace them for the better:
gael-varoquaux.info/personnal/a-...

A national recognition; but science and open source are bitter victories

I have recently been awarded France’s national order of merit, for my career, in science, in open source, and around AI. The speech that I gave carries messages important to me (French below;...

gael-varoquaux.info

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