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Jason da Silva Castanheira

@jasondasilvac.bsky.social
435 followers 177 following 35 posts

The guy in the pink suit at OHBM 🧠🧠🧠 Postdoc Fellow at the Division of Psychology and Language Sciences, UCL

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Jason da Silva Castanheira @jasondasilvac.bsky.social · 10/09/2026
Very cool work on brain-fingerprinting! 🧠 doi.org/10.1038/s414...
doi.org
Experience-dependent changes in functional connectome fingerprinting - Nature Communications
Researchers showed that shared military service temporarily reduces the distinctiveness of functional brain connectivity, lowering connectome fingerprinting accuracy while preserving individual stabil...
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Steve Fleming @smfleming.bsky.social · 09/09/2026
Glad to be part of this elegant study that is reshaping the way I think about metacognition. Confidence is strikingly goal-sensitive, with supposedly sensory biases such as PEB being readily flipped through instruction. Led by Prady Sepulveda and Benedetto De Martino www.biorxiv.org/content/10.6...
biorxiv.org
Goals shape human confidence
Confidence guides our decisions: it determines when we commit to a choice, gather more information, or change our minds. Prominent models treat confidence as a readout of the evidence in support of a ...
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Sylvain Baillet @sylvainbaillet.bsky.social · 12/08/2026
💡Alzheimer’s disease does not unfold on a single clock. 👉Our new study is out today. www.science.org/doi/10.1126/...
science.org
Prediction of mild cognitive impairment progression using time-sensitive multimodal biomarkers
Alzheimer’s disease (AD) develops silently for years before symptoms emerge, making early identification of at-risk individuals essential for prevention trials and early intervention. We tested whethe...
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Kevin O’Neill @kevingoneill.github.io · 20/07/2026
I'm heading to #CogSci2026 @cogscisociety.bsky.social this evening, looking forward to seeing lots of new & familiar faces! 🇧🇷 I'll be presenting this paper: A measure of metacognitive bias you can be confident in 📍: T.18.3 🗓️: July 24th, 2-3:30pm 👥: @tianqizhan.bsky.social @smfleming.bsky.social
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 17/07/2026
Interested in how we plan over our imagination? Come to Brazil 🇧🇷 & my poster P1-E-37 at #CogSci2026! Here, @smfleming.bsky.social and I use computational modelling to demonstrate that planning over our imaginations, untethered from perception, relies on mental representations.
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Tianqi ZHAN @tianqizhan.bsky.social · 16/07/2026
Are you interested in metacognition/ individual differences/ Bayesian modeling/ psychometrics? I'm thrilled to present our poster at #CogSci2026 🇧🇷 next week! Come check it out and chat! 📍Poster number P1-E-41 📅 2:45 pm, July 23 👥 @jasondasilvac.bsky.social @smfleming.bsky.social
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 10/07/2026
Out now in eLife, our new and improved paper on Attention and planning. Here, we explore how attention acts like an inductive bias that selects relevant information on which to plan. 📍🗺️👀 (1/5) elifesciences.org/articles/108... @smfleming.bsky.social
elifesciences.org
How attention simplifies mental representations for planning
Spatial attention controls the information people become aware of and, in turn, incorporate into simplified perceptual representations for use in multi-step planning.
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Roxana Zeraati @roxana-zeraati.bsky.social · 07/07/2026
Our paper "Neural timescales from a computational perspective" is finally out in @natneuro.nature.com: www.nature.com/articles/s41... We discuss how computational models and methods can distill empirical observations on neural timescales into quantitative, testable theories of brain computation.
nature.com
Neural timescales from a computational perspective - Nature Neuroscience
This review integrates computational approaches to provide a unified view on how data analysis methods, biophysical mechanistic models and machine learning approaches can help to uncover the origins a...
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Peter Kok @peterkok.bsky.social · 24/06/2026
I am recruiting a postdoctoral researcher and a PhD student, funded by a new ERC grant. The grant focuses on the role of the hippocampus in visual perception, using 7T fMRI (hippocampal subfields, cortical layers) and MEG+iEEG. The intended start dates for both positions are in early 2027. 🧠🟦 1/3
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 17/06/2026
4000 attendees, 36 degrees, 2 posters, 1 glass of wine…. 🍷 #ohbm2026
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 12/06/2026
See you in Bordeaux 🍷! #OHBM2026
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Max Levinson @maxlevinson.bsky.social · 11/05/2026
NEW PAPER🚨👀 in Science Advances with a wonderful transatlantic team. (incl @sylvainbaillet.bsky.social @olejensen.bsky.social @katduecker.bsky.social) Using human MEG, we found lower-order and higher-order neural processes that underlie illusory transitions in conscious visual perception. 🧵👇
science.org
Hierarchical brain dynamics supporting visual perceptual transitions
Illusory transitions in conscious visual perception involve both early visual cortex and higher-order motor cortices.
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Nature Reviews Neuroscience @natrevneuro.nature.com · 13/04/2026
Categorization is ‘baked’ into the brain — a Perspective by Lisa Feldman Barrett & Earl K. Miller @lisafeldmanbarrett.com @earlkmiller.bsky.social #neuroscience #neuroskyence www.nature.com/articles/s41...
nature.com
Categorization is ‘baked’ into the brain - Nature Reviews Neuroscience
Categorization, the grouping of objects, living organisms, actions or events into equivalence clusters, is fundamental to adaptive behaviour. In this Perspective, Barrett and Miller discuss evidence t...
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Kevin O’Neill @kevingoneill.github.io · 19/03/2026
happy to announce the official release of my first R package on CRAN! 🎉 building on the Hmetad toolbox by @smfleming.bsky.social, the hmetad package allows users to fit the meta-d' model of confidence ratings using a familiar brms/lme4-style formula syntax
metacoglab.github.io
hmetad: an R package for hierarchical Bayesian modeling of confidence ratings
Implementation of Bayesian regressions over the meta-d' model of psychological data from two alternative forced choice tasks with ordinal confidence ratings. For more information, see Maniscalco & Lau...
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Steve Fleming @smfleming.bsky.social · 13/04/2026
🚨 Announcing another edition of the Metacognitive Science satellite in NYC, August 2nd 2026 (day before CCN) 🧠 🧪 Abstract submission is now open and closes May 15th! metacognitivescience.org Co-organised with @meganakpeters.bsky.social @luciecharlesneuro.bsky.social @dobyrahnev.bsky.social
metacognitivescience.org
Home
This satellite meeting showcases the latest research on metacognition, in the form of both keynotes and short oral presentations.
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Benjy Barnett @benjyb.bsky.social · 27/02/2026
Do our social interactions influence what we become aware of? In our❗new preprint❗@danieljamesyon.bsky.social and I delve into this question: asking whether joint decision making in a detection task can bias awareness reports. osf.io/preprints/ps... 🧵
osf.io
OSF
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Sylvain Baillet @sylvainbaillet.bsky.social · 17/02/2026
🚨new lab preprint; brain fingerprinting entirely revisited: Can we differentiate individuals from just seconds of neurophysiological recordings with machine learning, without resorting to black-box approaches? In this work, Maxence Lapatrie says 'yes'. www.biorxiv.org/content/10.6...
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Giulia Baracchini @giuliaabaracc.bsky.social · 30/01/2026
Now in press one of my last PhD projects! We traced the neurobiological profile of fMRI BOLD signal variability, a measure that has been related to age, behaviour, disease status, but had not yet been fully contextualised within the brain's multiscale architecture. www.nature.com/articles/s41...
nature.com
The biological role of local and global fMRI BOLD signal variability in multiscale human brain organization - Nature Communications
Baracchini et al. reveal that temporal variability in fMRI brain signals encodes biologically meaningful information across spatial and temporal scales, highlighting its role in healthy brain function...
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 15/12/2025
Very proud to announce that the final chapter of my thesis is now out in Cell Reports! How do neurophysiological traits that characterize individuals evolve across the lifespan? We combined data from over 1,000 individuals aged 4–89 to answer this question. (1/6) 🧠👶👦👧👱👩‍🦱🧔‍♂️🧓👴 doi.org/10.1016/j.ce...
doi.org
Redirecting
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 25/09/2025
Quantifying rhythmic and arrhythmic brain activity is a hot 🥵 topic. But how independent are the two components from one another? 🤔 In my latest work with @smfleming.bsky.social & @matlandry.bsky.social, I explore the relationship between the two. (1/4)
biorxiv.org
Quantifying Rhythmic and Arrhythmic Components of Brain Activity
Brain activity comprises both rhythmic (periodic) and arrhythmic (aperiodic) components. These signal elements vary across healthy aging, and disease, and may make distinct contributions to conscious ...
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Sylvain Baillet @sylvainbaillet.bsky.social · 10/09/2025
New study ✨! ⍺ regulates perceptual switches during binocular rivalry: ⍺↓ before dominant percepts, ↑ before mixed percepts + PO connectivity shifts from top-down to feedforward after perceptual alternations Led by Janine Mendola @mcgill.ca, w/ E Mokri & @jasondasilvac.bsky.social
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 10/09/2025
🚨The first paper of my postdoc is out now in @elife.bsky.social! 🚨 We explored the role of attention in planning. Thank you 🙏 to the reviewers for their helpful comments & suggestions. Keep your 👀 peeled for additional analyses and our response. elifesciences.org/reviewed-pre...
elifesciences.org
How attention simplifies mental representations for planning
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Steven Scholte @neurosteven.bsky.social · 08/09/2025
🧠 New preprint: Why do deep neural networks predict brain responses so well? We find a striking dissociation: it’s not shared object recognition. Alignment is driven by sensitivity to texture-like local statistics. 📊 Study: n=57, 624k trials, 5 models doi.org/10.1101/2025...
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Nadine Dijkstra @nadinedijkstra.bsky.social · 23/07/2025
After five years of confused staring at Greek letters, it is my absolute pleasure to finally share our (with @smfleming.bsky.social) computational model of mental imagery and reality monitoring: Perceptual Reality Monitoring as Higher-Order inference on Sensory Precision ✨ osf.io/preprints/ps...
osf.io
OSF
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 24/07/2025
Very proud to share this one🥹! We show that personalized signatures of brain activity are heritable and relate to the expression of specific genes. That means my brain-fingerprint is very similar to my twin brother's! #ResearchIsMeSearch🧠 🧬 ♊️
science.org
Genetic foundations of interindividual neurophysiological variability
Individual brain activity profiles are shaped by lifelong genetic influences.
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Sylvain Baillet @sylvainbaillet.bsky.social · 23/07/2025
🧬🧠 Our latest study shows that individual brain dynamics are partly written in our genes. We found that heritable neurophysiological traits align with adult cortical gene expression and psychological function. www.science.org/doi/10.1126/... @theneuro.bsky.social @mcgill.ca
science.org
Genetic foundations of interindividual neurophysiological variability
Individual brain activity profiles are shaped by lifelong genetic influences.
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Nature Human Behaviour @nathumbehav.nature.com · 28/05/2025
Collecting an extensive publicly available dataset on 4 inhibitory control tasks, Lee et al. show that more than 1000 trials/participant are necessary to reduce within-subject variability and improve the reliability of the congruency effect. www.nature.com/articles/s41...
nature.com
Precise individual measures of inhibitory control - Nature Human Behaviour
Collecting an extensive publicly available dataset on four inhibitory control tasks, Gratton et al. show that more than 1,000 trials per participant are necessary to reduce within-participant variabil...
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 22/05/2025
🚨Excited to share my first preprint from my postdoc with @smfleming.bsky.social! 🚨 We explore how attention shapes simplified mental representations for planning. We show that inductive biases characteristic of attentional selection shape how we plan. Check it out: osf.io/preprints/ps... 🧠🔦🤖
osf.io
OSF
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MEGUKI 2025 @meguki2025.bsky.social · 12/05/2025
Want to present at MEG-UKI but funding is a barrier? We’re offering a limited amount of travel bursaries for presenters to help cover the cost of: - Registration - Accommodation - Travel expenses Click the link below to find out more: meguk.ac.uk/apply-for-bu...
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MEGUKI 2025 @meguki2025.bsky.social · 19/05/2025
Deadline approaching, only 6 days left! Follow the link below to submit your abstract: meguk.ac.uk/abstract-sub...
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MEGUKI 2025 @meguki2025.bsky.social · 06/05/2025
Drumroll please... 🥁 Abstract submission for MEG-UKI 2025 is now open!!! All the details can be found meguk.ac.uk/meg-uki-2025/ We are looking forward to welcoming you to London!
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 28/11/2024
How do neurophysiological traits that characterize individuals evolve across the lifespan? Check it out: 👶🧒🧑🧓🧠 with the amazing @sylvainbaillet.bsky.social @alexwiesman.bsky.social & Margot Taylor www.biorxiv.org/content/10.1... 🧵(1/3)
biorxiv.org
The Lifespan Evolution of Individualized Neurophysiological Traits
How do neurophysiological traits that characterize individuals evolve across the lifespan? To address this question, we analyzed brief, task-free magnetoencephalographic recordings from over 1,000 ind...
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Alex Wiesman @alexwiesman.bsky.social · 21/02/2024
New preprint! 📢 We combine MEG and neuromelanin-sensitive MRI of the locus coeruleus to show a noradrenergic basis for altered alpha rhythms in #Parkinson's disease w/ Victoria Madge, Ted Fon, Alain Dagher, Louis Collins, and @sylvainbaillet.bsky.social www.medrxiv.org/content/10.1...
Scientific figure demonstrating the spatial alignment between a normative atlas of norepinephrine transporter densities (x-axis; lower maps to the right) and the relationship between cortical alpha rhythms and locus coeruleus integrity (y-axis; higher maps to the right). 

The association between locus coeruleus degeneration and pathological alpha-rhythmic increases was strongest in cortical regions sensitive to norepinephrine (r = -.65, pSPIN < .001).
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Sylvain Baillet @sylvainbaillet.bsky.social · 09/02/2024
Congrats to newly minted Dr. Jason da Silva Castanheira! @jasondasilvac.bsky.social 🧑‍🎓!!!
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 08/02/2024
As if my name isn’t long enough already, I added PhD to it today!
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Steve Fleming @smfleming.bsky.social · 29/01/2024
We are recruiting for a Marie Curie "CODE" PhD student 💻🧠🚨 (sites.google.com/view/confide...) The project will focus on neurocomputational approaches to information seeking, offloading and metacognitive control across the lifespan www.ucl.ac.uk/work-at-ucl/... Deadline 22 Feb, pls share!
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Alex Wiesman @alexwiesman.bsky.social · 15/01/2024
New paper(!) on the neurochemistry of structural and functional cortical changes in #Parkinson's disease w/ fantastic collaborators @jasondasilvac.bsky.social Ted Fon and @sylvainbaillet.bsky.social Now published OA in @ANA_journals: 📰https://doi.org/10.1002/ana.26871 🧵👇 (1/8)
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Elliott Wimmer @elliottwimmer.bsky.social · 02/01/2024
Postdoc in our lab! Last day to apply! Please apply if interested - don’t worry about supporting docs or anything. (Apologies for the awkward timing on the deadline - it was an HR thing.)
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 12/12/2023
Initial submission of my PhD thesis ✅ If Mariah Carey tops the Spotify charts next week, y’all will know why… #AllIWantForChristmasIsAPhD
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Sylvain Baillet @sylvainbaillet.bsky.social · 05/12/2023
New collab work driven by the magic duet @matlandry.bsky.social + @jasondasilvac.bsky.social just published in @OxUniPress Cerebral Cortex. Parsing out the neurophysiological substrates of ⬆️ vs. ⬇️ attention.
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 05/12/2023
Very excited to share this work (it’s been a long time in the making). Here we show that both top-down 📖 and bottom-up ‼️attention modulate 🧠alpha-band activity, which partially explains the interference between the two attention systems when oriented 👀to opposite spatial locations.
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 01/12/2023
Went to see Mariah Carey’s Christmas show and submitted a manuscript this week. I’m feeling accomplished! 😌
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Lucina Uddin @lucinauddin.bsky.social · 01/11/2023
Relationships between brain signal variability and executive function change as a function of life stage. So glad to finally get this out! direct.mit.edu/netn/article...
direct.mit.edu
Brain Signal Variability and Executive Functions Across the Lifespan
Abstract. Neural variability is thought to facilitate survival through flexible adaptation to changing environmental demands. In humans, such capacity for flexible adaptation may manifest as fluid rea...
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 23/10/2023
So happy to be a part of this paper! Go read all about our results. A big OBRIGADO to @AlexWiesman for including me 😇😌
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Stuart Oldham @stuartoldham.bsky.social · 28/09/2023
Hello Bluesky/Twitter refugees! For my first post, I invite you to check out the latest work by @garedaba.bsky.social and myself where we look at thalamocortical gradients in human and mouse brains 🌈🧠🐭🌈 In short, we highlight evidence for a supra-nuclear axis of thalamocortical organisation
nature.com
A phylogenetically-conserved axis of thalamocortical connectivity in the human brain - Nature Commun...
The principles underpinning&nbsp;the&nbsp;projection patterns of the thalamus to the cortex are not well characterised. Here, the authors reveal a medial to lateral thalamic gradient of genetic and co...
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María José Castro Gómez @mjcastrogomez.bsky.social · 26/09/2023
Integrating multimodal and multiscale connectivity blueprints of the human cerebral cortex in health and disease journals.plos.org/plosbiology/... #neuroimaging #neuroscience
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Raquel London @raquellondon.bsky.social · 14/09/2023
I think I just created a feed for EEG in neuroscience. Add #EEG to your EEG or MEG related posts to make it appear in the feed. bsky.app/profile/did:...
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Jason da Silva Castanheira @jasondasilvac.bsky.social · 19/09/2023
Hello sky-people🕊️! I'm Jason, a cognitive neuroscientist PhD candidate at McGill University. I study attention, consciousness, and individual differences aka brain-fingerprints 🧠. I bake a mean croissant and can quote Mariah Carey on cue #PsychSciSky #neuroscience
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