Serge Dumoulin

Serge Dumoulin

@sergedumoulin.net

Neuroscientist at the crossroads of vision, cognition, and computational neuroimaging. Director, Spinoza Centre | PI, Netherlands Institute for Neuroscience | Professor, Vrije Universiteit Amsterdam | sergedumoulin.net

599 followers580 following56 posts

Serge Dumoulin
@sergedumoulin.net

👁️🧠🧪 Vision takes time. But how does visual information flow through the human brain? Our new PLOS Computational Biology paper uses population receptive field (pRF) modelling to bring the spatial precision of fMRI to MEG, revealing the temporal dynamics of visual areas. 📖 doi.org/10.1371/jour...

doi.orgNon-invasive mapping of the temporal processing hierarchy in the human visual cortexAuthor summary Vision doesn’t happen instantaneously, but unfolds over time. While we understand a lot about how the brain processes visual space, understanding how the brain processes information ove...
Serge Dumoulin
@sergedumoulin.net

Rather than focusing on response onset, we characterize the activation window of each visual area. The figure reveals a clear temporal hierarchy across the visual cortex, from earlier activation windows in V1 to progressively later ones in higher visual areas.

Serge Dumoulin reposted

Netherlands Institute for Neuroscience (NIN)
@nin-knaw.bsky.social

We're hiring a PhD Student! Under supervision of @sergedumoulin.net, you will investigate whether individual brain folding patterns reflect computational principles that optimize neural communication and brain organization. Learn more and apply on our website: nin.nl/vacancies/ph...

nin.nlPhD Student in Biologically Inspired Computational Visual Neuroscience - Netherlands Institute for Neuroscience - Master the Mind
Serge Dumoulin
@sergedumoulin.net

🧠 PhD position: computational brain origami. Fully funded 4-year PhD on a new NWO-funded project combining 7T MRI, population receptive field mapping, and computational neuroscience to understand why human brains fold the way they do. 📢 vacatures.knaw.nl/job/Amsterda... #PhD #Neuroscience #Hiring

vacatures.knaw.nlPhD Student in Biologically Inspired Computational Visual NeurosciencePhD Student in Biologically Inspired Computational Visual Neuroscience
Serge Dumoulin
@sergedumoulin.net

In sports, we celebrate 1st, 2nd, 3rd. Everyone else gets lumped together. Why? Using 7T MRI, pRF modelling, and artificial neural networks, we show that tuning underlies ordinality perception, with most neural populations preferring early ordinalities. doi.org/10.1523/JNEU... 🧪🧠

doi.orgNeural tuning for ordinal processing: convergent patterns in human brains and artificial networksProcessing ordinality, i.e., the rank of an item in a series such as 1st, 2nd, 3rd, etc., is a fundamental skill shared by humans and animals. While humans often use symbolic sequences like numbers or...

Serge Dumoulin reposted

Liangyou Zhang
@liangyouzhang.bsky.social

Excited to share that my first article is now published in Communications Biology! Humans and many animals have an innate ability to rapidly perceive numerosity—the number of objects in a visual scene. But how does our brain process this fundamental capability? Read the full paper: rdcu.be/eRxMi

rdcu.beNumerosity adaptation suppresses early visual responsesCommunications Biology - Numerosity adaptation suppresses monotonic neural responses to numerosity displays in the early visual cortex, with more suppression for higher numerosity adaptors....

Serge Dumoulin reposted

Marco Aqil
@marcoaqil.bsky.social

Our new paper is out in Nature Communications! nature.com/articles/s41... We combined psychophysics, 7T fMRI, and computational modeling of vision with placebo, 5mg, and 10mg psilocybin, in the same group of participants, to clarify the computational mechanisms of psychedelics. 🧵

Serge Dumoulin reposted

Communications Biology
@commsbio.nature.com

Numerosity adaptation suppresses monotonic neural responses to numerosity displays in the early visual cortex, with more suppression for higher numerosity adaptors. Therefore, numerosity adaptation effects begin in early sensory stages of processing. www.nature.com/articles/s42...

nature.comNumerosity adaptation suppresses early visual responses - Communications BiologyNumerosity adaptation suppresses monotonic neural responses to numerosity displays in the early visual cortex, with more suppression for higher numerosity adaptors. Therefore, numerosity adaptation ef...
Serge Dumoulin
@sergedumoulin.net

The paper demonstrating that #psilocybin alters contextual computations is out in @natcomms.nature.com : doi.org/10.1038/s414... Thanks to the reviewers and coauthors : @marcoaqil.bsky.social , @tknapen.bsky.social , @gillesdehollander.bsky.social , and Nina Vreugdenhil

doi.orgPsilocybin alters visual contextual computations - Nature CommunicationsThis study finds psilocybin alters visual contextual brain processes and perception, suggesting a generic mechanism through which psychedelics influence brain function and subjective experience.
Serge Dumoulin@sergedumoulin.net

Psilocybin, the active compound in magic mushrooms, alters perception and induces hallucinations. In this preprint, we show through visual illusions, fMRI and modeling that psilocybin affects contextual computations, a potentially general mechanism of psychedelics. www.biorxiv.org/content/10.1...

biorxiv.orgPsilocybin alters visual contextual computationsPsilocybin alters perception and brain dynamics. Contextual computations are ubiquitous in the brain. Here, we investigate the effects of psilocybin using psychophysics, ultra-high field functional MR...

Serge Dumoulin reposted

Joel Reithler
@joelreithler.bsky.social

We have an exciting 4-year PhD position available @maastrichtu.bsky.social focusing on intracranial EEG recordings to investigate how hippocampal ripples contribute to human memory processing. For more info: tinyurl.com/r5c49zuy (closing date Nov 2nd) Please help spread the word! #neurojobs

tinyurl.comPhD Candidate: Neurophysiological mechanisms underlying human memoryPhD Candidate: Neurophysiological mechanisms underlying human memory

Serge Dumoulin reposted

Matthias Nau
@matthiasnau.bsky.social

Excited to share our new paper w/ @cibaker.bsky.social in @natcomms.nature.com linking active vision & memory! We provide evidence that gaze reinstatement & neural reactivation are deeply related phenomena that jointly reflect the experiences constructed during recall. doi.org/10.1038/s414... 🧵1/9

doi.orgNeural and behavioral reinstatement jointly reflect retrieval of narrative events - Nature CommunicationsWhen people recall a movie, their eye movements and brain activity resemble those observed during the viewing. These behavioral and neural reactivations are linked through a common process, likely ref...

Serge Dumoulin reposted

Esther Kuehn
@estherkuehn.bsky.social

Thanks to all (co)authors & reviewers for their contribution to this study on #layer specific changes in #sensory #cortex across the #lifespan in #humans & #mice now out in @natneuro.nature.com Here is a short summary of our findings 1/6

DZNE research center@dzne.science

🧠 The human brain ages less than thought and in layers – at least in the area of the cortex responsible for the sense of touch. See study @natneuro.nature.com by @estherkuehn.bsky.social and colleagues at DZNE, @hih-tuebingen.bsky.social and @uni-magdeburg.de: 👉 www.nature.com/articles/s41...

nature.comLayer-specific changes in sensory cortex across the lifespan in mice and humans - Nature NeuroscienceThe principal layer architecture of the sensory cortex is altered with aging. The authors show that overall thinning of the primary somatosensory cortex is driven by deep layer degeneration but that l...

Serge Dumoulin reposted

Damien Fair
@drdamienfair.bsky.social

I still get chills Meet Mike *30+ years severe depression *first hospitalized @ 13y *20 meds *3 rounds of ECT *2 near-fatal suicide attempts Mike felt joy for the first time in decades after we turned on his new brain pacemaker or PACE see videos, read paper, follow thread doi.org/10.31234/osf...

Serge Dumoulin reposted

Ariel Rokem
@arokem.org

NeuroHackademy 2025 started today! Our 10th summer school/hackathon in neuroimaging and data science @uwescience.bsky.social, the 8th supported by NIH/NIMH. You can follow along, with videos of lectures in this YouTube playlist, posted almost as soon as they happen: youtube.com/playlist?lis...

youtube.comNeuroHackademy 2025 - YouTubeNeurohackademy is a summer school in neuroimaging and data science, held at the University of Washington eScience Institute. This year’s course will be held ...
Serge Dumoulin
@sergedumoulin.net

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Neuromatch@neuromatch.bsky.social

Are you a basic scientist? What do you think about public engagement? Whether you're active, curious, or unsure where to start—we want your perspective. Take our survey to help shape future support & training. Open until 3 Aug airtable.com/appIOiMGYFhF... #BasicScience #PublicEngagement #SciComm

Serge Dumoulin reposted

Martin Vinck
@martinavinck.bsky.social

This should be bigger news - the Dutch parliament decided to strongly reduce non-human primates experiments. Subsidy for the large primate center - which includes important virology research unique in Europe - is gradually reduced to zero by 2030. Going towards the end of NHP research in NL...

stemvizier@stemvizier.nl

Het amendement van Ines Kostić (#PvdD) c.s. over middelen voor het verminderen van apenproeven, is aangenomen. (36725-VIII-11) #TweedeKamer [Volledige tekst]

Serge Dumoulin reposted

Marcus Daghlian
@dagnsci.bsky.social

Don’t miss our upcoming CCN satellite event, Applying Computational Models to Clinical Disorders (August 11th). This session will showcase how computational methods are transforming our understanding and treatment of sensory disorders dlwiki.nin.nl/ccn_2025 #CCN2025 #CompNeuro #VisionScience

dlwiki.nin.nlComputational insights into clinical disorders (August 11, 2025)Cognitive Computational Neuroscience conference satellite event on computational models and clinical disorders
Serge Dumoulin
@sergedumoulin.net

It’s ironic that amid huge cuts to science and education funding and enforcement of Dutch-only programs, extra money is spent attracting US scientists. I support international collaboration, but without investing in our own students and education, science can’t thrive. www.nwo.nl/en/news/upda...

nwo.nlUpdate on the fund for leading international scientists: advance announcement of the Tulip Fund | NWONWO has made 25 million euros available to facilitate the transition of top international researchers to the Netherlands. Later this summer, the call for proposals for the Tulip Fund, as the new fund will be called, will open. The fund will enable renowned international scientists from outside the EU to continue their research at a Dutch research institution. Knowledge institutions can nominate top researchers or talents who wish to continue their work here in the Netherlands due to the growing threats to academic freedom to be considered for funding.

Serge Dumoulin reposted

Carlien Roelofzen
@carlienroelofzen.bsky.social

Voor onze fMRI studie zijn wij nog steeds op zoek naar volwassenen met amblyopie (‘lui oog’) of glaucoom! Meer informatie en aanmelden: dlwiki.nin.nl/Participate

dlwiki.nin.nlDeelnemen aan hersenonderzoekEnglish follows Dutch
Carlien Roelofzen@carlienroelofzen.bsky.social

Gezocht: volwassenen met amblyopie (‘lui oog’) of glaucoom Heb je amblyopie of glaucoom? En ben je benieuwd hoe jouw visuele aandoening invloed heeft op de hersenen? Doe dan mee aan ons fMRI onderzoek in Amsterdam en help de wetenschap vooruit! Meer info en aanmelden: dlwiki.nin.nl/Participate

Serge Dumoulin reposted

Nikos Priovoulos
@nikospriovoulos.bsky.social

New paper from the amazing Emma Brouwer: humble, group-optimized B1+ shims at 7T can boost or destroy signal where it matters—no subject-specific calibration needed. in MRM doi.org/10.1002/mrm.... @spinozacentre.bsky.social🎓🧠 #MRI #fMRI #Neuroimaging #7T

doi.orgEasy‐to‐use B1+ shims for human brain imaging at 7 TPurpose B1+$$ {B}_1^{+} $$ field inhomogeneity is a common problem in high field brain MRI (>3$$ >3 $$ T). Parallel-transmit methods that adjust the B1+$$ {B}_1^{+} $$ field channelwise often requi.....

Serge Dumoulin reposted

Open Science Community Amsterdam
@oscamsterdam.bsky.social

#OSCAwards2025 | open access, data, materials & software: OpenMReye: camera-free magnetic resonance-based eye tracking for research and clinical applications 👀🩻 by @matthiasnau.bsky.social Find out more: github.com/DeepMReye/

github.comDeepMReyeDeepMReye is a software package for magnetic resonance-based eye tracking for (f)MRI experiments. Contact: m.nau[at]vu.nl & markus.frey1[at]gmail.com - DeepMReye

Serge Dumoulin reposted

Matthias Nau
@matthiasnau.bsky.social

Honored to receive the #OSCAward2025. Thank you to the #OpenScience community @oscamsterdam.bsky.social for this recognition and for the inspiring work you do! And congrats to the other prize winners! 🎉 1/2

Open Science Community Amsterdam@oscamsterdam.bsky.social

#OSCAwards2025 | open access, data, materials & software: OpenMReye: camera-free magnetic resonance-based eye tracking for research and clinical applications 👀🩻 by @matthiasnau.bsky.social Find out more: github.com/DeepMReye/

github.comDeepMReyeDeepMReye is a software package for magnetic resonance-based eye tracking for (f)MRI experiments. Contact: m.nau[at]vu.nl & markus.frey1[at]gmail.com - DeepMReye