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Hamid Razi

@hamidrazi.bsky.social
81 followers 330 following 30 posts

PhD student at University of East Anglia (PI: Dr. Neil Garrett). Using behavioural experiments, computational modelling and fMRI to study learning from misinformation.

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Hamid Razi @hamidrazi.bsky.social · 27/05/2026
📢🥳 Excited to share the first pre-print of my PhD thesis with Neil Garrett and Tom Sambrook: “Confirmation Bias Exists in the Face of False Information.”
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Hamid Razi @hamidrazi.bsky.social · 08/03/2026
The uncertainty around Iran war is becoming unbearable. The internet blackout exacerbates an already unsettling situation. Can barely reach my family. I left Iran in late January and engaging in science has kept me sane so far.
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Uri Hertz @urihertz.bsky.social · 07/03/2026
New preprint! Where we used multiplayer games to track brain activity underlying the sustained intergroup bias. Led by @oritn.bsky.social . "Group-dependent learning and decision neural signals underlie the persistence of intergroup bias" doi.org/10.31234/osf... 👇
doi.org
OSF
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Hamid Razi @hamidrazi.bsky.social · 24/11/2025
Defended my PhD thesis last week and passed 🎉🥳 It took 5 hours but flew by thanks to the engaging discussions. Grateful to my supervisors who made the past three years fun! Will continue as postdoc in France with Prof. Jean-Claude Dreher. Psyched!
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Ali Shiravand @alishiravand.bsky.social · 16/11/2025
🧠Our new preprint is out on PsyArXiv! We study how getting more feedback (seeing what you could have earned) and facing gains vs losses change the way people choose between risky and safe options. 🖇️Link: doi.org/10.31234/osf... It's a thread🧶:
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David Rand @dgrand.bsky.social · 22/11/2025
🚨New WP🚨 Dialogues with our AI DebunkBot: ✔️Reduced belief in antisemitic conspiracy theories among believers ✔️Effect durable at 1+ month ✔️Improved attitudes towards Jews among initially negative participants 🟰Debunking works for deeply rooted, identity-linked conspiracies osf.io/preprints/ps...
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Sam Gershman @gershbrain.bsky.social · 21/09/2025
I once saw a (very interesting) talk about sleep in which the speaker started by saying that we don't really know how to define sleep, and then proceeded to operationalize sleep in flies as basically periods when they are still for a long time. This got me thinking...
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Hamid Razi @hamidrazi.bsky.social · 12/08/2025
Can't wait to read this!
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Jenny Allen @jennyallen.bsky.social · 06/08/2025
New in TiCS w @dgrand.bsky.social @gordpennycook.bsky.social It’s been ~10yrs since misinfo research exploded but our paradigms are stuck in the post-2016 “fake news” model Time for new approaches: o True/False → Content that misleads o Belief → Behavior o Eval interventions in ambiguous settings
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Hamid Razi @hamidrazi.bsky.social · 29/07/2025
Need sources on the best practices for fMRI analysis. Any suggestions? Need to establish good habits right off the bat! #fMRI #Neuro
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Thomas Yeo @bttyeo.bsky.social · 17/07/2025
1/11 Excited to share our @Naturestudy led by @leonooi.bsky.social @csabaorban.bsky.social @shaoshiz.bsky.social AI performance is known to scale with logarithm of sample size (Kaplan 2020), but in many domains, sample size can be # participants or # measurements... doi.org/10.1038/s415...
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Micah G. Allen @micahgallen.com · 13/07/2025
Modern theories of emotion (especially “interoceptive inference”) often cite William James as a key inspiration. But what did James actually say about emotion, and is it supported by the data? Here’s a brief look at the core arguments and classic evidence. 🧵
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Eran Eldar @eraneldar.bsky.social · 12/07/2025
Is risk-taking shaped by decision-making or by learning? In new work, we show that in experience-based risk-taking, very little variance is explained by decision-making (top), but a lot is explained by learning (bottom). www.nature.com/articles/s41...
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Hamid Razi @hamidrazi.bsky.social · 10/07/2025
Such a great opportunity! but I can't apply because Trump wouldn't give a visa to an Iranian *sighs*
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Hamid Razi @hamidrazi.bsky.social · 10/07/2025
As much as i love computational modelling, the fact that conceptually similar parameters do not generalise across task contexts is a bit disappointing. Excellent paper btw!
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David V. Smith @dvsmith.bsky.social · 07/07/2025
🚨 New paper in European Journal of Neuroscience: Meta-Analysis Reveals That Explore–Exploit Decisions Are Dissociable by Activation in the Dorsal Lateral Prefrontal Cortex, Anterior Insula, and Dorsal Anterior Cingulate Cortex. 🔗 doi.org/10.1111/ejn.... (1/2)
doi.org
Meta‐Analysis Reveals That Explore–Exploit Decisions Are Dissociable by Activation in the Dorsal Lateral Prefrontal Cortex, Anterior Insula, and Dorsal Anterior Cingulate Cortex
We conducted a coordinate-based meta-analysis (N = 23 studies) where we found activation in the dorsal lateral prefrontal cortex, anterior insula, and anterior cingulate cortex during exploration ver...
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Paul Sharp @paulbsharp.bsky.social · 05/07/2025
🚨New preprint! WHEN should we plan toward a goal? Most research focuses on how and where to plan, but the timing of planning initiation has been overlooked. We show humans leverage a cognitive map - called model-based meta-control - to learn when to deploy a plan. 🧵(1/15) osf.io/preprints/ps...
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Matthew Apps @brainapps.bsky.social · 04/07/2025
I am delighted to announce registration and abstract submission is open for "The Mechanistic Basis of Foraging 2025" to be held at the Edgbaston Park Hotel, University of Birmingham, UK on 3-5th November 2025. uobevents.eventsair.com/the-mechanis...
uobevents.eventsair.com
Homepage - The Mechanistic Basis of Foraging
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FraserWSmith @fraserwsmith.bsky.social · 04/07/2025
We are looking for a post-doc (3 yrs) to lead neuroimaging experiments (using fMRI & EEG) investigating the multimodal basis of material perception deadline **July 28th** #neuroskyence #VisionScience #PsychSciSky #compneurosky @timkietzmann.bsky.social, @stephanierossit.bsky.social
jobs.ac.uk
Senior Research Associate in Cognitive Neuroscience at University of East Anglia
Apply for the Senior Research Associate in Cognitive Neuroscience role on jobs.ac.uk, the top job board for academic positions in higher education. View details and apply now.
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Sander van der Linden @profsanderlinden.bsky.social · 27/06/2025
If there was ever a moment where useful idiots who claim that misinformation isn't a clear concept, harms few, & is not widespread, have to come to terms with how their rhetoric is being co-opted by right-wing climate denial think thanks, this is THAT moment. The tobacco playbook - as predicted.
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Anne Kühnel @akuehnel.bsky.social · 23/06/2025
I'm very excited that this is out as preprint. In this study, 370 participants completed up to 30 runs of reward learning. We see that BMI and and Binge eating are associated with distinct RL patterns. Includes hierarchical models using Stan (+ many hours of sampling) and MRI data of an effort task
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Hamid Razi @hamidrazi.bsky.social · 13/06/2025
Will be at the SBDM conference next week in Lyon. But lost all the excitement because of Israel's attack on my home country Iran. Now I'm all worried.
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Rua M. Williams @fractalecho.bsky.social · 03/05/2025
If you're a grad student or an undergrad interested in research I need to you listen to me very carefully. You cannot learn to write good research papers if you do not read good research papers. Stop asking LLMs to summarize papers for you.
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PessoaBrain @pessoabrain.bsky.social · 27/04/2025
𝗛𝗼𝘄 𝘀𝗵𝗼𝘂𝗹𝗱 𝘄𝗲 𝗱𝗲𝗳𝗶𝗻𝗲 𝗮𝗻𝗱 𝗱𝗲𝘁𝗲𝗿𝗺𝗶𝗻𝗲 𝗮 𝗯𝗿𝗮𝗶𝗻 𝗿𝗲𝗴𝗶𝗼𝗻'𝘀 𝗶𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝗰𝗲? We introduce the idea of "importance" in terms of the extent to which a region's signals steer/contribute to brain dynamics as a function of brain state. Work by @codejoydo.bsky.social elifesciences.org/reviewed-pre...
elifesciences.org
Brain dynamics and spatiotemporal trajectories during threat processing
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Hamid Razi @hamidrazi.bsky.social · 26/04/2025
An exciting opportunity!
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Phillip Witkowski @phillip-witkowski.bsky.social · 16/04/2025
I'm excited to share that the VOR for my latest manuscript with Lindsay Rondot, Zeb Kurth-Nelson, @mgarvert.bsky.social , Ray Dolan, @behrenstimb.bsky.social and Erie Boorman, is out in @elife.bsky.social ! Check it out here: elifesciences.org/articles/101... A short thread below 🧵 (1/5):
elifesciences.org
Neural mechanisms of credit assignment for delayed outcomes during contingent learning
Orbitofrontal cortex and hippocampus reinstate representations of causal choices to associate with delayed outcomes, and the frontal pole supports this credit assignment process by maintaining pending...
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Stefano Palminteri @stepalminteri.bsky.social · 16/04/2025
Our first fMRI in a while where we investigate the neural bases or multi-step Reinforcement Learning and found a clear functional dissociation between the parietal and the peri-hippocampal cortex. More info by Fabien, below
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Stefano Palminteri @stepalminteri.bsky.social · 14/04/2025
🚨Preprint update!🚨 with @thecharleywu.bsky.social Are Large Language Models (LLMs) conscious? 🧠💻 Most say: only if they replicate the brain's computations. But we propose a shift: consciousness should be inferred from their behavior. osf.io/preprints/ps...
osf.io
OSF
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Patricia Lockwood @thepsychologist.bsky.social · 11/04/2025
Why I value peer review - new World View in @naturehumbehav.bsky.social tinyurl.com/4w5795ua I discuss why peer review is still important and useful despite some of the challenges, and reflect on some personal peer review experiences. Interested to hear what others think about peer review 🙂.
nature.com
Why I value peer review
Nature Human Behaviour - Patricia Lockwood discusses why she values peer review and participating in the peer review process, despite some of the challenges.
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Juan Vidal-Perez @vipejuan.bsky.social · 07/04/2025
🚨 New preprint alert! 🚨 w/ @ranimo.bsky.social 📝 osf.io/preprints/psya… From partisan news to algorithmically curated content, we constantly receive biased misinformation. With biased input, can our beliefs be accurate? Turns out, biased misinformation distorts our beliefs! 👇🧵 1/13
osf.io
OSF
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Hamid Razi @hamidrazi.bsky.social · 24/02/2025
Turning papers into audio books actually works. Been listening to a lotta papers while working out
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Steve Fleming @smfleming.bsky.social · 21/02/2025
Excited to see this now out in the world! We identify a computational basis for how persistent underconfidence is maintained in the face of intact performance, finding that it is grounded in impaired updating of global self-beliefs from local metacognition www.nature.com/articles/s41... 1/N
nature.com
Distorted learning from local metacognition supports transdiagnostic underconfidence - Nature Communications
Individuals with symptoms of anxiety and depression exhibit persistent underconfidence. Here, the authors show that distortions in learning from local metacognition can explain how underconfidence is ...
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The Transmitter @thetransmitter.bsky.social · 24/02/2025
Many neuroscience students are steeped in an experiment-first style of thinking that leads to “random walk science.” Let’s not forget how theory can guide experiments towards deeper insights, writes @gershbrain.bsky.social. #neuroskyence www.thetransmitter.org/theoretical-...
thetransmitter.org
Breaking the barrier between theorists and experimentalists
Many neuroscience students are steeped in an experiment-first style of thinking. Let’s not forget how theory can guide experiments.
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Sam Gershman @gershbrain.bsky.social · 28/01/2025
@noehamou.bsky.social and @gautamreddy.bsky.social (with a little bit of help from me) have written a really interesting theoretical paper on associative learning (in particular Pavlovian conditioning): www.biorxiv.org/content/10.1...
biorxiv.org
Reconciling time and prediction error theories of associative learning
Learning involves forming associations between sensory events that have a consistent temporal relationship. Influential theories based on prediction errors explain numerous behavioral and neurobiologi...
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Hamid Razi @hamidrazi.bsky.social · 21/01/2025
With Trump at the helm, I should kiss all the US labs goodbye for postdoc ha!
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Sanjay Srivastava @sanjaysrivastava.com · 21/12/2024
Every cog neuro talk: “Here’s a picture of downtown Tokyo. How do humans navigate this rich visual environment? Let’s find out. In experiment 1, three rats looked at triangles while I measured one neuron from each…”
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Sandra González-Bailón @sgonzalezbailon.bsky.social · 11/12/2024
New publication (4+ years in the making): “The Diffusion and Reach of (Mis)Information on Facebook”. shorturl.at/VE2fU We analyze the propagation of 1B+ posts across content moderation regimes, with @davidlazer.bsky.social @jatucker.bsky.social @taliastroud.bsky.social @annenbergpenn.bsky.social
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Stanislas Dehaene @standehaene.bsky.social · 11/12/2024
Very nice! In humans, Dror Dotan and I also found that finger tracking provides a fine continuous measure of priors, evidence accumulation, and confidence. See e.g. www.unicog.org/publications... See all of Dror's publications on this topic here: www.unicog.org/biblio/Autho...
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Quentin Huys @docqhuys.bsky.social · 11/12/2024
There are many valid interfaces. Computational psychiatry adds the computational one, which is important because the brain is a computational organ. Also attempts to improve on the blurriness of words by using mathematical precision, though it's hard and lots of work remains to be done.
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Maëva L'Hôtellier @maevalhotellier.bsky.social · 10/12/2024
New preprint! 🚨 Performance of standard reinforcement learning (RL) algorithms depends on the scale of the rewards they aim to maximize. Inspired by human cognitive processes, we leverage a cognitive bias to develop scale-invariant RL algorithms: reward range normalization. Curious? Have a read!👇
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Saloni @scientificdiscovery.dev · 20/11/2024
Since I've been here for a while… here are some useful features on Bluesky that you might not have discovered yet! 🧵
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Earl K. Miller @earlkmiller.bsky.social · 18/11/2024
Representational spaces in orbitofrontal and ventromedial prefrontal cortex: task states, values, and beyond www.cell.com/trends/neuro... #neuroscience
cell.com
Representational spaces in orbitofrontal and ventromedial prefrontal cortex: task states, values, and beyond
The orbitofrontal cortex (OFC) and ventromedial-prefrontal cortex (vmPFC) play a key role in decision-making and encode task states in addition to expected value. We review evidence suggesting a conne...
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Hamid Razi @hamidrazi.bsky.social · 18/11/2024
Finally, I'm here. Time to find the people I follow on Twitter.
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