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Siawoosh Mohammadi

@siawooshmr.bsky.social
1.9K followers 636 following 129 posts

Physicist | MRI, biophysics, microstructure, in/ex vivo histology | Prof. @uniluebeck.bsky.social, PI @UKEhamburg, affiliated @lipmpib.bsky.social, @mpicbs.bsky.social | Views are my own www.micromri.uni-luebeck.de/institut

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Reposted by Siawoosh Mohammadi
Nico Schuck @nicoschuck.bsky.social · 21/09/2026
2023: 8,039 proposals 2024: 10,360 proposals 2025: 17,066 proposals 2026: 21,627 proposals Something's gotta give
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Malte Kreutzfeldt @mkreutzfeldt.bsky.social · 18/09/2026
Diese Aussage ist übrigens nicht mal drei Wochen alt. #Tankrabatt
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Steve Smith @fmrib-steve.bsky.social · 01/09/2026
As of yesterday, Shella is now the EiC! She will be fantastic :-)
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Matthias Nau @matthiasnau.bsky.social · 19/08/2026
🚨 Job alert 🚨 Our department @vuamsterdam.bsky.social is hiring an Assistant Professor in Cognitive Neuroscience! Join our lovely community here in beautiful Amsterdam! 🧠🔥 Deadline: October 15 Apply: workingat.vu.nl/vacancies/as...
workingat.vu.nl
Vacancy — Assistant Professor in Cognitive Neuroscience
Join the Department of Experimental and Applied Psychology (Vrije Universiteit Amsterdam) as Assistant Professor in cognitive neuroscience.
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Philipp Kanske @kanske.bsky.social · 19/08/2026
Interessiert an einer Promotions- oder PostDoc-Stelle in clinical social neuroscience? Wir sind ein kooperatives, internationales Team👇 an der @tudresden.bsky.social und suchen Verstärkung für Lehre und Forschung im @trr393.bsky.social Danke für's Teilen! www.verw.tu-dresden.de/StellAus/ste...
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Jack Van Horn @jackvanhorn8.bsky.social · 11/06/2026
I am very excited for this OHBM @ohbmofficial.bsky.social symposium on axonal and myelin measurement USING MRI/DWI and their contributions to the g-ratio and neural signal conduction estimation!! @stikov.bsky.social @siawooshmr.bsky.social @mfcallaghan.bsky.social @mathieuboudreau.bsky.social
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Jan Wenzel @janwenzel.bsky.social · 30/05/2026
Happy to share our new publication on the role of endothelial cells in age-related cognitive dysfunction, published in @ebiomedicine.bsky.social. Thanks to all coauthors, incl. Dimitrios Spyropoulos, @dorotheazi.bsky.social, @talongden.bsky.social, and many more. www.thelancet.com/journals/ebi...
thelancet.com
Lancet
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Bryan 🌐 🇺🇦 Slava Ukraine personal opinions only @papootx.bsky.social · 18/05/2026
Trump USAID Cuts Killed One Million People 750,000 died in the first year. By 2030 defunding USAID will kill 9.4 Million people, and 2.5 Million Children under the age of 5. Trump’s most lethal policy will almost surely be his 71 percent cut in humanitarian aid. www.nytimes.com/2026/05/09/o...
nytimes.com
Opinion | This Is What Happened When Trump Abandoned the World’s Poorest Children
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Antoine Lutti @antoinelutti.bsky.social · 08/05/2026
📢📢 As part of the #OHBM2026 brainhack, we're organising a workshop about the #hMRI toolbox for the processing and analysis of #MRI relaxometry data in #neuroscience studies. The workshop will take place on June 12th - just prior to #OHBM2026. See 👇 for details Everyone welcome 🤗
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ISMRM @ismrm.bsky.social · 10/05/2026
Don't miss tonight's Opening Plenary Session: Hear from 2025-2026 ISMRM President, Mark A. Griswold, and 2025-2026 ISMRM Program Chair, Kathryn Keenan, followed by our first 2026 named lecturer! LAUTERBUR LECTURE by Kirsten Donald 15:45 | Plenary Hall (CTICC 2 | Halls 8-10) #ISMRM2026 #ISMRT2026
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ISMRM @ismrm.bsky.social · 10/05/2026
Watch ISMRM 2026 Plenary Sessions—LIVE and FREE! All plenary sessions from the ISMRM & ISMRT Annual Meeting & Exhibition in Cape Town are being live streamed and open to the global MR community. Join from anywhere: ow.ly/sno750YS4lI #ISMRM2026 #ISMRT2026 #GlobalMR
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ISMRM @ismrm.bsky.social · 10/05/2026
Catch the Young Investigator Awards oral presentation tomorrow morning! 08:20 | Auditorium 2 at CTICC #ISMRM2026 #ISMRT2026
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Marc L Seal @parkvillegeek.bsky.social · 05/05/2026
Lamellar Normative Modelling of the Hippocampus Across the Human Lifespan | bioRxiv www.biorxiv.org/content/10.6...
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Nikola Stikov @stikov.bsky.social · 27/04/2026
I took a 10-year break from g-ratio imaging to focus on vendor-neutral MRI. In the meantime, Alexander Gow at the American Society for Neurochemistry (ASN) and @jackvanhorn8.bsky.social at the @ohbmofficial.bsky.social have been leading a g-ratio revival. 1/2
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Ulrike M. Krämer @ulrikekraemer.bsky.social · 21/04/2026
New paper out from our lab, together with Anat Perry! We asked if empathy is reduced when watching someone in pain in a pre-recorded video or live. Short answer: no, at least as far as our behavioral and electrophysiological measurements go. Check out the long answer in the paper: rdcu.be/fdEMr
rdcu.be
Empathy for pain persists across live two-way video interactions and viewing of prerecorded videos
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Christoph Bautz @christophbautz.bsky.social · 17/04/2026
Harald Lesch bringt es auf den Punkt: Viele sind “geschockt, dass wir demonstrieren müssen für den gesunden Menschenverstand, für erneuerbare Energien.” Aber angesichts von Reiches fossiler Lobbypolitik müssen wir das tun - und das werden wir morgen bundesweit. Erneuerbare Energien verteidigen!
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Andreas Strube @astrube.bsky.social · 14/04/2026
1/6 Our paper is out today in Nature Communications! From the SFB/TRR 289 Treatment Expectation @sfb-trr-289.bsky.social we show that temporal expectations shape somatosensory perception - for both painful heat AND non-painful cold stimuli.
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Matthias Nau @matthiasnau.bsky.social · 16/04/2026
The #ERC just announced new rules! erc.europa.eu/news-events/... If you got a B score before, you’re blocked for 2 years (instead of 1). A C score means 3-year exclusion. This applies to the 2027 call for now, but I’d expect this to stick. Important for anyone planning to apply this round!
erc.europa.eu
Applying for an ERC grant in the 2027 competitions: what you need to know
The ERC plans to launch the grant competitions under its 2027 Work Programme between July 2026 and June 2027, with the calls for proposals introducing several changes to the eligibility rules for appl...
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Jonas Obleser @jonasobleser.bsky.social · 14/04/2026
The Obleser lab will be hiring soon! New postdoc (fully funded) and new PhD or part-time postdoc position (soft-money funded). Spread the word. Start in Sept/Oct. Watch out for official announcements! Please be in touch. auditorycognition.com obleserlab.com hoerhanse.de lemmi.uni-luebeck.de
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Athena Akrami @athenaakrami.bsky.social · 07/04/2026
Academic friends, It's beyond heartbreaking to watch what's unfolding in Iran & the region. A few of us drafted an open letter calling for protection of civilians & of educational, research, medical & cultural institutions. Please read & sign if you agree: sites.google.com/view/protect... #IranWar
sites.google.com
Protect Academic Life in Iran
We, the undersigned academics and researchers from around the world, express our profound concern over recent military strikes on Iran, the retaliatory responses, and the reported impact on civilian l...
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Stephanie Noble @sneuroble.bsky.social · 06/04/2026
Speechless. Widely considered the MIT of Iran, Sharif has given the US some of its best engineers, and some of my most talented (and kind, and thoughtful) colleagues—some of whom who have chosen the US as their home.
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Frau Büüsker @uedio.bsky.social · 06/04/2026
Ihr wisst ja alle, dass Theo Müller mit der AfD abkumpelt. Aber ist allen klar, wie es um die Qualität seiner Produkte steht? Und wie viel Müll der Konzern um sich wirft? www.zdf.de/video/portra...
zdf.de
Die Wahrheit über Müller - Food Stories mit Sebastian Lege
Von der Dorfmolkerei zum globalen Konzern: Müller prägt den Milchmarkt mit Joghurt, Käse & Co. Was steckt hinter dem Erfolg - und wie steuert das Unternehmen seine Produktion?
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Siawoosh Mohammadi @siawooshmr.bsky.social · 03/04/2026
1/9 New preprint by Laurin Mordhorst: 3D histology validates 2D histology for axon radius distributions and conduction velocities. We asked: if individual axons vary along their length, can classic 2D histology still reflect white-matter organization? Link: www.biorxiv.org/content/10.6...
biorxiv.org
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Knowledge-based Vision Lab @knowledgevisionlab.bsky.social · 26/03/2026
Our latest results on bioRxiv! Our EEG study shows that human brain activity consecutively supports both Bayesian integration and prediction‑error signalling. Plot twist: prediction‑error signalling appears to be consistent with the Reverse Hierarchy Theory! www.biorxiv.org/content/10.6...
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Imaging Neuroscience @imagingneurosci.bsky.social · 26/03/2026
New paper in Imaging Neuroscience by Michiel Cottaar, Saad Jbabdi, et al: Multi-modal Monte Carlo MRI simulator of tissue microstructure doi.org/10.1162/IMAG...
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Helen Blank @helenblank.bsky.social · 18/03/2026
Looking for a #PhD or #postdoc position on predictive processing? 🧠 Please, get in touch if you are the perfect fit to join my lab at @ruhr-uni-bochum.de
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Tina Lonsdorf @tinalonsdorf.bsky.social · 12/03/2026
Wir haben 2 Professuren in Bielefeld zu besetzen. 1) W2 Allgemeine Psychologie und Neurobildgebung (Nachfolge Werner Schneider) www.uni-bielefeld.de/uni/karriere... & 2) eine Lotte-Köhler-Stiftungs-Juniorprofessur (W1) für Psychodynamische Psychotherapie www.uni-bielefeld.de/uni/karriere...!
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Department of Imaging Neuroscience @imagingneuroucl.bsky.social · 16/02/2026
We are delighted to see departmental alumni Eleanor Maguire, and her former PhD student Sir Demis Hassabis, honoured in the UCL Faces project, as part of UCL’s bicentenary celebrations. Read about their valuable contributions on the UCL Faces webpage. www.ucl.ac.uk/about/search...
ucl.ac.uk
The human brain reimagined: Eleanor Maguire, transforming understanding of neuroscience
Eleanor Maguire transformed our understanding of human memory and how we approach neuroscience research, inspiring generations of scientists and paving the way for some of our biggest breakthroughs.
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Siawoosh Mohammadi @siawooshmr.bsky.social · 09/02/2026
🧠 New bioRxiv preprint from the Microstructure MRI lab (first author: Francisco J. Fritz): “Longitudinal whole-human-brain quantitative MRI study on autolysis, fixation, rehydration, and shrinkage effects.” www.biorxiv.org/content/bior... 1/8
biorxiv.org
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Department of Imaging Neuroscience @imagingneuroucl.bsky.social · 17/09/2025
Klaas Enno Stephan notes “Three decades is an unusually long period for a purely academic software to exist, enjoy enormous popularity, and stay at the top of the game”. Go #SPM, go #MethodsTeam members, past and present, from all around the world! 🧠🌏
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Anders Eklund @wandedob.bsky.social · 21/01/2026
I am now hiring a PhD student in deep learning for medical images, to work at the Department of Biomedical Engineering (IMT) for our ELLIIT project on federated learning. Application deadline February 19. web103.reachmee.com/ext/I011/853...
web103.reachmee.com
PhD student in biomedical engineering, deep learning for medical images
We are looking for a PhD student in biomedical engineering with a focus on deep
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Helen Blank @helenblank.bsky.social · 12/01/2026
How do priors influence speech processing? Do they enhance expected signals or highlight the unexpected (prediction errors)? @fabianschneider.bsky.social' s work shows: It depends!
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DER SPIEGEL @spiegel.de · 12/01/2026
Kein Internet, kein Telefon: Das iranische Regime legt im Kampf gegen die Massenproteste die Kommunikation des Landes lahm. Die Menschen gehen offenbar trotzdem weiter auf die Straße. Auch wenn sie um ihr Leben fürchten müssen.
spiegel.de
Iran – Internetsperre: Dann eben Aufstand ohne Internet
Kein Internet, kein Telefon: Das iranische Regime legt im Kampf gegen die Massenproteste die Kommunikation des Landes lahm. Die Menschen gehen offenbar trotzdem weiter auf die Straße. Auch wenn sie um ihr Leben fürchten müssen.
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Imaging Neuroscience @imagingneurosci.bsky.social · 12/01/2026
New paper in Imaging Neuroscience by Bradley G. Karat, Jelle Veraart, et al: Revisiting the interpretation of axon diameter mapping using higher-order signal representations doi.org/10.1162/IMAG...
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Steve Smith @fmrib-steve.bsky.social · 07/01/2026
Preprint on PANDORA by Aslan Abivardi: A massive archive of UK Biobank brain imaging from 82K subjects. For each of 98 sub-modalities (e.g., FA from dMRI), the images are collated into a convenient subjectsXvoxels HDF5 file. pages.fmrib.ox.ac.uk/pandora/web/ www.medrxiv.org/content/10.6...
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Peder Larson @pezlarson.bsky.social · 10/01/2026
For 15(!) years I’ve been teaching introductory #MRI to grad students, and struggled to find a textbook for a wide variety of backgrounds. I'm happy to share an online textbook I created, fully open source (including code for generating figures and plots shown): larsonlab.github.io/MRI-educatio...
larsonlab.github.io
Introduction to Principles of MRI — Principles of MRI
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Faruk Gulban @ofgulban.bsky.social · 09/01/2026
A new MRI protocol can scan the human brain and its venous network in under 7 minutes at 0.35 mm iso. resolution, marking it as a potential tool for diagnosing cerebrovascular diseases and monitoring neurodegeneration. scim.ag/3LkRfRY
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Aperture Neuro @apertureohbm.bsky.social · 06/01/2026
Frigon et al. investigate the histology and MRI registration quality of ex vivo human brain blocks fixed with solutions used in anatomy laboratories: doi.org/10.52294/001... @ohbmofficial.bsky.social
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JB Manent @jbmanent.bsky.social · 01/01/2026
Very happy to have contributed to this wonderful/tentacular work alongside so many amazing colleagues and friends! It opens up new ways of understanding grey matter heterotopia associated with altered cortical function and #epilepsy in humans. 🧠🧪🔥 www.nature.com/articles/s41...
nature.com
Position-independent emergence of neocortical neuron molecular identity, connectivity and function - Nature Neuroscience
Even when neocortical neurons form in abnormal locations, they retain their identity and function, revealing that brain circuit formation can be guided by intrinsic developmental programs rather than ...
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Siawoosh Mohammadi @siawooshmr.bsky.social · 21/12/2025
1/5 Big congratulations to Dr. Laurin Mordhorst on completing his PhD! 🎓 His dissertation focused on axon-radii mapping—a challenging problem and a significant step forward for quantitative neuroimaging.
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Oded Rechavi @odedrechavi.bsky.social · 18/12/2025
Submitting a grant you’re not eligible to get
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Siawoosh Mohammadi @siawooshmr.bsky.social · 16/12/2025
1/3 Huge congratulations to Dr. Björn Fricke on graduating! 🎓 Björn started his PhD with us in 2020— COVID and the extension phase of my Emmy Noether project made the start somewhat complicated. For example, I couldn’t immediately offer a full 3-year PhD position.
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Frau Büüsker @uedio.bsky.social · 13/12/2025
Mein Eindruck ist, dass wir in aktuellen politischen Debatten extrem auf Narrative reinfallen. Die Wirtschaft am Abgrund, ohne KI geht es nicht, Entbürokratisierung sonst Wirtschaftskrise, die Wirtschaft will das Verbrenneraus kippen. All diese Erzählung verkürzen komplexe Realitäten auf 1 Richtung.
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Siawoosh Mohammadi @siawooshmr.bsky.social · 06/12/2025
1/ Our new paper is out in Imaging Neuroscience! 🎉 We validated in-vivo MRI–based axon radius mapping by comparison to large-scale human brain histology (> 46 M axons & 35 CC-ROIs). Title: “MRI-scale histology validates spatial sensitivity of in-vivo MRI-based axon radius estimation”
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Imaging Neuroscience @imagingneurosci.bsky.social · 05/12/2025
New paper in Imaging Neuroscience by Laurin Mordhorst, Siawoosh Mohammadi, et al: MRI-scale histology validates spatial sensitivity of in-vivo MRI-based axon radius estimation doi.org/10.1162/IMAG...
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ShouraHashemi @shourahashemi.bsky.social · 06/12/2025
Beim Kish Marathon im Iran mussten die über 5000 Frauen und Männer zwar getrennt laufen. Die Hijabpflicht wurde aber durchwegs ignoriert. Gegen die Organisatoren wurde ein Strafverfahren eröffnet. Aber auch das wird nichts daran ändern, dass sich die Frauen durchsetzen.
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Tim Behrens @behrenstimb.bsky.social · 03/12/2025
Thread of French and Dutch research institutes slowly unsubscribing from web of science (and thence impact factors).
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Mind-Body-Emotion Group @mbe-lab.bsky.social · 01/12/2025
*13th MindBrainBody Symposium* 📆 Mar 9-11, 2026 🏠 #Berlin & virtual (deadline: Jan 8, 2026) Keynotes: - @ulrikebingel.bsky.social - Karl Friston (online) - @tinalonsdorf.bsky.social - Sonja Kotz - Julian Thayer ...& so much more: prizes, posters, talks, food, drinks, encounters. Let's meet!
Stylized logo of the MindBrainBody Symposium
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DER SPIEGEL @spiegel.de · 27/11/2025
Drittmittel in der Forschung: Neue Studie zur Vergabe - Lübecker Forscher Sören Krach schlägt frühe Lotterie vor: Geld für die eigene Forschung zu beantragen, ist aufwendig, die Vergabe von sogenannten Drittmitteln oft ungerecht. Wissenschaftler aus Lübeck schlagen nun ein neues Verfahren vor: Das…
spiegel.de
Drittmittel in der Forschung: Neue Studie zur Vergabe - Lübecker Forscher Sören Krach schlägt frühe Lotterie vor
Geld für die eigene Forschung zu beantragen, ist aufwendig, die Vergabe von sogenannten Drittmitteln oft ungerecht. Wissenschaftler aus Lübeck schlagen nun ein neues Verfahren vor: Das Los soll mitentscheiden.
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Jan Wenzel @janwenzel.bsky.social · 16/11/2025
I am happy to share a recent collaboration with @huiskenlab.bsky.social and @aakhte.bsky.social , who developed a great technique for performing fast and, above all, isotropic light-sheet microscopy. www.nature.com/articles/s41...
nature.com
Isotropic, aberration-corrected light sheet microscopy for rapid high-resolution imaging of cleared tissue - Nature Biotechnology
A light-sheet microscope built from off-the-shelf components enables high-resolution clear tissue imaging.
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