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JJ

@jjodx.eurosky.social
852 followers 359 following 752 posts

Engineer working on motor control/motor learning/aging in the department of Movement Sciences at KU Leuven (Belgium)🧠🧠🧠

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Reposted by JJ
Jörn Diedrichsen @diedrichsenjorn.bsky.social · 25/09/2026
New preprint from the lab. A long-overdue fMRI study on bimanual movement direction encoding: www.biorxiv.org/content/10.6... @alighavampour.bsky.social, @andpru.bsky.social, @jjodx.eurosky.social
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Meike van der Heijden @meikeesther.bsky.social · 17/06/2026
New Preprint: Competitive Olivocerebellar Input Selection Promotes Resilient Circuit Formation -- Join the ride for some developmental neuroscience, stay for some pretty pictures. doi.org/10.64898/202...
doi.org
Competitive Olivocerebellar Input Selection Promotes Resilient Circuit Formation
Many neural circuits undergo competitive input selection, a process in which supernumerary connections compete for innervation territory on target cells. This process can create atypical circuits when...
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Paul Gribble 🇨🇦 @gribblelab.org · 17/09/2026
when you use AI to write code you put yourself in cognitive debt ; at some point you will have to spend the time and effort to understand the code, if you are ever to use it for anything you put your name on. May feel like a shortcut but really it’s only the beginning of your work it’s not the end
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Richard Sever @richardsever.bsky.social · 21/09/2026
"authors could not answer...even basic questions about the paper...difficult to see how they could have verified the paper’s contents" medium.com/@TmlrOrg/ask...
medium.com
Asking Authors About Their Own Papers
By Nihar B. Shah
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JJ @jjodx.eurosky.social · 18/09/2026
In one week, Anouck Matthijs will defend her PhD on "the cerebellum as a key neural substrate for motor reserve during healthy aging" All welcome to attend (online)
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M.J. Crockett @mjcrockett.bsky.social · 13/09/2026
The AI industry claims their products will "improve efficiency" and "accelerate science" but I'm able to do less science because I have to spend more time screening applicants to my lab. LLM noise drowns out signal- last year I shortlisted unqualified apps, and surely missed some gems.
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Society for the Neural Control of Movement @ncmsociety.bsky.social · 14/09/2026
NCM pres Kathleen Cullen started her career as an electrical engineering student. Her interest in neuroscience came from a neighbour across then hall with what she jokingly calls “a rumor”: neurons use electricity to encode & transmit information. She was fascinated drive.google.com/file/d/1-MS9...
drive.google.com
Bluesky_Cullen_Rumor.mp4
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Sam McDougle @actlab.bsky.social · 14/09/2026
New preprint! In this study, the fantastic Apoorva Sharma demonstrates that the amount of time that passes during motor preparation can "tag" for retrieval otherwise competing motor memories. Modeling work links these fx to putative temporal basis sets in the cerebellar cortex. Feedback welcome!
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JJ @jjodx.eurosky.social · 08/09/2026
Version of record of our paper "Preserved cerebellar functions despite structural degeneration in older adults" is now available @elife.bsky.social Where we show that structure and function of the cerebellum are decoupled during the aging trajectory elifesciences.org/articles/109... #sensorimotor
elifesciences.org
Preserved cerebellar functions despite structural degeneration in older adults
Cerebellar-dependent functions are mostly maintained or even enhanced across the lifespan, with cerebellar-mediated motor abilities remaining intact despite degeneration, in contrast to non-cerebellar...
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JJ @jjodx.eurosky.social · 07/09/2026
Tracking the hidden dynamics of proprioception www.biorxiv.org/content/10.6... #sensorimotor I ❤️the approach but could this be used in other populations where movements are quite different? Across populations, many parameters will vary and difficult to assign difference to one specific aspect.
biorxiv.org
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JJ @jjodx.eurosky.social · 04/09/2026
reviewer's comment on a PhD fellowship that I don't understand: The candidate plans to learn EEG during the project, which might lead to potential delays in data acquisition. Off course, that's the goal of a PHD, to learn new things...
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Professor John R. Hutchinson @johnrhutchinson.bsky.social · 31/08/2026
This excellent website allows you to scroll down into the deep sea and get a better feeling for how profoundly deep it is. And what lives where. neal.fun/deep-sea/
neal.fun
The Deep Sea
Scroll down the deep sea in this interactive page.
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JJ @jjodx.eurosky.social · 27/08/2026
Tactile suppression during movement as optimal integration of somatosensory feedback across time www.biorxiv.org/content/10.6... #sensorimotor
biorxiv.org
Tactile suppression during movement as optimal integration of somatosensory feedback across time
When reaching for an object, tactile sensations from a sleeve sliding over the moving arm are often ignored, yet the computational principles governing this phenomenon remain unclear. Prevailing accou...
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Dr Abeba Birhane @abeba.blacksky.app · 19/08/2026
i don’t want “accelerated”, “increased-speed” or “fast-paced” research. in fact, am not interested in any shortcuts to mindful, intentional, and slow science
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Timnit Gebru @timnitgebru.blacksky.app · 26/08/2026
Friends, I think Ghent University should hear from us as the eugenicists are out in full force. This letter is from academics there to counter the ridiculous letter supporting the white supremacist now being called a "whistleblower" by his ilk You can add your name👇🏽 docs.google.com/forms/d/e/1F...
docs.google.com
Open letter on the suspension of Nathan Cofnas at Ghent University
***Version française en dessous*** We, colleagues of Nathan Cofnas - supported by many colleagues internationally - want to respond to the negative and incorrect framing of Ghent University’s decisio...
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JJ @jjodx.eurosky.social · 25/08/2026
@andpru.bsky.social should like how it is framed ;-)
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JJ @jjodx.eurosky.social · 24/08/2026
Successful reinforcement history suppresses explicit and implicit error corrections journals.plos.org/ploscompbiol... #sensorimotor by @joshcashaback.bsky.social
journals.plos.org
Successful reinforcement history suppresses explicit and implicit error corrections
Author summary Conflicting previous work has suggested that reinforcement feedback leads to either greater or smaller movement corrections. Here we elucidate that past successful actions lead to a sup...
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JJ @jjodx.eurosky.social · 24/08/2026
Cerebellar rhythms: mechanisms, functions and translational opportunities www.nature.com/articles/s41... #sensorimotor
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JJ @jjodx.eurosky.social · 24/08/2026
Reward prediction errors shape sensory-error-driven single-trial motor learning #sensorimotor royalsocietypublishing.org/rspb/article...
royalsocietypublishing.org
Reward prediction errors shape sensory-error-driven single-trial motor learning
Abstract. Short-term motor adaptation is a form of motor learning that optimizes how sensory information about a target’s location is translated into a tar
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Austin Winkelman - MN CD 6 (I)🏴‍☠️ @austin4rep.com · 24/08/2026
Moravec’s paradox is the discovery by artificial intelligence and robotics researchers that high-level reasoning (like math or chess) requires very little computation for a computer, but low-level sensorimotor skills (like walking or recognizing a face) are extremely difficult to replicate.
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JJ @jjodx.eurosky.social · 23/08/2026
Really believE this
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roterote @roterote.bsky.social · 22/08/2026
Here is the full suspension letter from UGent that was sent to Nathan Cofnas, it shows ample reason for his suspension and potential termination. Including breach of contract, using the University of Ghent’s name and legitimacy to promote his racial supremacist views and causing reputational damage.
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Nick Holmes @thehandlab.bsky.social · 03/08/2026
This graph took me 3 years to make. It's perhaps the largest-ever #metaanalysis of #TMS #BrainStim data. It includes my first real scientific discovery 🧵: When you stimulate the hand with a brief electric pulse, your brain and spinal cord are momentarily less excitable: muscle output decreases 1/n
Muscle excitability (y-axis) plot against the time between stimulation of the hand (PNS) and stimulation of the cortico-spinal pathway (TMS) to the muscle (x-axis). The x-axis is in milliseconds, from 1 to 1000 on a log scale; the y-axis is the log10 ratio of muscle excitability with prior hand stimulation versus without. Each blue dot in the figure is a group mean, obtained from 353 papers. The blue line is the random effect meta-analytic mean; where the blue line goes thicker (between 17-64ms, then 100-320ms) there is a significant meta-analytic effect (i.e., the line is below zero, muscle excitability is decreased). The plot includes over 11000 datapoints. Most datapoints are concentrated in the 16-30ms period, which is studied as 'short-latency afferent inhibition' (SAI).
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JJ @jjodx.eurosky.social · 31/07/2026
The published version of Matheus' paper is now published at Geroscience: Mistakes matter, age doesn’t: task outcome modulates implicit motor adaptation similarly in young and older adults link.springer.com/article/10.1...
link.springer.com
Mistakes matter, age doesn’t: task outcome modulates implicit motor adaptation similarly in young and older adults - GeroScience
Despite several age-related processes impacting motor performance, older adults often retain the ability to implicitly adapt to sensory prediction errors. Here, we leverage the fact that implicit adap...
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Reza Shadmehr @rezashadmehr.bsky.social · 28/07/2026
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Reza Shadmehr @rezashadmehr.bsky.social · 28/07/2026
If an action results in error, each neuron requires an individualized teaching signal that guides change in its output. This is the credit assignment problem of learning. Are there neurons in the brain that can compute such a sophisticated teaching signal? Yes. www.biorxiv.org/content/10.6...
biorxiv.org
Climbing fibers encode the gradient of a loss function for the cerebellum
Neurons in the brain are often many synapses away from motoneurons, yet if a movement results in error, each distant neuron needs a teacher that considers its specific contribution to production of th...
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ASAPbio @asapbio.bsky.social · 28/07/2026
Despite many adversities that came their way, the @elife.bsky.social team continues with their innovative publishing model and is a champion in the Publish-Review-Curate space. We have nothing but admiration for what you've done so far. 👏 Learn more about eLife and PRC:
buff.ly
Open Science: What is publish, review, curate?
Publish, Review, Curate (PRC) solves some of the challenges in research communication today. We take a look at the range of organisations working to make PRC a bigger part of scholarly publishing.
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Quentin Bacquelé @quentinbacquele.bsky.social · 23/07/2026
1/ The world's songbirds sing in just 8 basic sounds. And where a bird lives decides which ones it uses. My first PhD paper is out now in @science.org (www.science.org/doi/10.1126/science.aee6239) Here is what we found:
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Emily M. Bender @emilymbender.bsky.social · 22/07/2026
Under Recommendations for policymakers in government and elsewhere: "Don’t believe the hype There is currently a strong commercial incentive on the part of the technology industry to overstate the capabilities of their products." >>
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Emily M. Bender @emilymbender.bsky.social · 21/07/2026
"This practice seeks publicity for new results on market timelines before the accepted processes of community evaluation in mathematics can take place." >>
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Emily M. Bender @emilymbender.bsky.social · 19/07/2026
How about a jet-lagged live posting while I read? Trying to read this because I keep getting tagged in posts about it, but the first paragraph already contains synthetic text (a quote from Claude). I will skip that bit and persevere... www.theguardian.com/technology/2...
theguardian.com
Could AI be conscious?
Experts believe it’s at least possible. We urgently need a plan to navigate the ethical implications
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tbabb @tbabb.bsky.social · 16/07/2026
for years, I have been using "draw the bike" as a metaphor for "attempt to recreate your knowledge thereby revealing invisible lack of understanding". TIL there was a paper about it
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JJ @jjodx.eurosky.social · 16/07/2026
Is AI making us stupid? www.cell.com/trends/cogni... Most important section of the paper is: "How we use AI matters"
cell.com
Is AI making us stupid?
Many worry that AI use will erode human cognition. We discuss evidence suggesting that offloading cognition to AI can impede skill acquisition and lead to skill decay, but risks depend on how AI is us...
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Jolande Fooken @ookenfooken.bsky.social · 15/07/2026
You think you can(not) multitask? Turns out that the sensorimotor system is flexible and intelligent when perceiving and acting on the environment in parallel. Check out one of the main projects from my @dfg.de funded Walter Benjamin!
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Stephen Turner @stephenturner.us · 14/07/2026
"The journal is a seventeenth-century technology asked to do four modern jobs at once: disseminate results, certify their quality, allocate scholarly attention, and confer career credit. It does none of them well." arxiv.org/abs/2607.05454
arxiv.org
Publishing Without Journals: An Open, Forkable Archive with Attributed Review
The journal is a seventeenth-century technology asked to do four modern jobs at once: disseminate results, certify their quality, allocate scholarly attention, and confer career credit. It does none o...
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Katie Matthews, PhD @katieocean.bsky.social · 14/07/2026
Wow. Published in May in The Lancet. Look at those numbers of fabricated references per 10,000 articles in PubMed. The urge to publish is overcoming the urge to, I dunno, discover and learn things? #AI #medsky 🧪 www.thelancet.com/journals/lan...
thelancet.com
Fabricated citations: an audit across 2·5 million biomedical papers
Scientific literature depends on the integrity of its references. Each reference implicitly asserts that a verifiable source exists and supports the claims being made. When references point to non-exi...
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JJ @jjodx.eurosky.social · 10/07/2026
Verifying the output requires the exact skills that the tool is eroding. medium.com/data-science...
medium.com
I’m an AI Researcher. AI Is Making Me Stupid
I’m an AI Researcher. AI Is Making Me Stupid My productivity has never been higher. My understanding has never been lower Last Tuesday, I sat down to write a Python function I’ve written probably …
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JJ @jjodx.eurosky.social · 10/07/2026
Great post ! We need to realize that the wrong use of AI tools will never make us expert but we need to become experts to be able to judge the output of those tools.
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Marlene Cohen @marlenecohen.bsky.social · 06/07/2026
I have always believed that ideas from basic systems neuroscience could eventually help people. But for years that felt more like hope than reality. But look! This is one of the most personally satisfying papers my lab has produced because we’re getting there. www.biorxiv.org/content/10.6... 🧪🧵 1/
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JJ @jjodx.eurosky.social · 30/06/2026
Great preprint from the team of Elvira Pirondini on the effect of spinal cord stimulation on many aspects of proprioception and motor control: Cervical spinal cord stimulation disrupts proprioception yet improves voluntary arm reaching www.biorxiv.org/content/10.6...
biorxiv.org
Cervical spinal cord stimulation disrupts proprioception yet improves voluntary arm reaching
Whether proprioception is necessary for upper-limb motor control has been debated for decades. Classic studies in deafferented animals and humans suggested that proprioception may be dispensable for r...
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JJ @jjodx.eurosky.social · 16/06/2026
Interference Between Motor Memories Arises From Implicit Recalibration www.biorxiv.org/content/10.6...
biorxiv.org
Interference Between Motor Memories Arises From Implicit Recalibration
Interference between consecutively acquired motor memories is a defining feature of sensorimotor adaptation, yet its mechanistic origin remains unresolved. Because adaptation is supported by separable...
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stefan @stefanthinks.bsky.social · 10/06/2026
Breaking: Team USA has won the World Cup for the first time because all the other teams were denied entry into the country and had to forfeit
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Michael Okun @michael-okun.bsky.social · 10/06/2026
I’ve officially resigned as Associate Editor for Frontiers in Systems Neuroscience. It used to be a reputable journal, but became a case study in how forced automation destroys academic integrity. 👇
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JJ @jjodx.eurosky.social · 10/06/2026
Using AI to pre-fill a table with different questions about candidates. One candidate tried to trick the system (but I wasn't asking the AI tool to select candidates, just to make a draft of the table based on which my decisions would be made)....
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Neuroskeptic @neuroskeptic.bsky.social · 08/06/2026
What is your favorite often-forgotten fact about the brain? Mine is that the human cortex has ~15 billion neurons but our cerebellum has about 70 billion! This is a well known fact but always surprises me when I remember it.
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JJ @jjodx.eurosky.social · 06/06/2026
A few days ago, I had the chance to go back to one of the most significant places in the world history: #OmahaBeach. 82 years ago, hundreds of men (and one woman) landed on the beaches of Normandy to fight for our freedom. May we never forget
Omaha Beach
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JJ @jjodx.eurosky.social · 05/06/2026
Just loved the title: "If LLMs Have Human-Like Attributes, Then So Does Age of Empires II" arxiv.org/abs/2605.31514
arxiv.org
If LLMs Have Human-Like Attributes, Then So Does Age of Empires II
Much research has been carried out on large language models (LLMs) and LLM-powered agentic workflows. However, many works within the field state emergence of, ascribe to, or assume, generalised anthro...
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Institute for Replication @i4replication.bsky.social · 29/05/2026
1/ Can AI help researchers check whether published social science results actually reproduce? In our new PNAS paper, we tested this directly in the AI Replication Games: 288 researchers, 103 teams, and real replication packages from quantitative social science.
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Stephen Turner @stephenturner.us · 28/05/2026
Generative AI use and misuse call for assessment reform in higher education www.science.org/doi/10.1126/...
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