Siawoosh Mohammadi
@siawooshmr.bsky.social
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
https://www.micromri.uni-luebeck.de/institut
https://www.micromri.uni-luebeck.de/institut
Pinned
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...
MRI-scale histology validates spatial sensitivity of in-vivo MRI-based axon radius estimation
doi.org/10.1162/IMAG...
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”
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”
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”
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”
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...
MRI-scale histology validates spatial sensitivity of in-vivo MRI-based axon radius estimation
doi.org/10.1162/IMAG...
December 6, 2025 at 3:18 PM
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”
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”
Reposted by Siawoosh Mohammadi
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...
MRI-scale histology validates spatial sensitivity of in-vivo MRI-based axon radius estimation
doi.org/10.1162/IMAG...
December 5, 2025 at 11:48 PM
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...
MRI-scale histology validates spatial sensitivity of in-vivo MRI-based axon radius estimation
doi.org/10.1162/IMAG...
Reposted by Siawoosh Mohammadi
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.
Gegen die Organisatoren wurde ein Strafverfahren eröffnet. Aber auch das wird nichts daran ändern, dass sich die Frauen durchsetzen.
December 6, 2025 at 8:50 AM
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.
Gegen die Organisatoren wurde ein Strafverfahren eröffnet. Aber auch das wird nichts daran ändern, dass sich die Frauen durchsetzen.
Reposted by Siawoosh Mohammadi
Thread of French and Dutch research institutes slowly unsubscribing from web of science (and thence impact factors).
December 3, 2025 at 6:53 AM
Thread of French and Dutch research institutes slowly unsubscribing from web of science (and thence impact factors).
Reposted by Siawoosh Mohammadi
*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!
📆 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!
December 1, 2025 at 7:28 AM
*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!
📆 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!
Reposted by Siawoosh Mohammadi
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…
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.
www.spiegel.de
November 27, 2025 at 8:52 AM
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…
Reposted by Siawoosh Mohammadi
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...
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.
www.nature.com
November 16, 2025 at 2:45 PM
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...
Reposted by Siawoosh Mohammadi
Mexiko hat gestern ein Klimaziel für 2035 vorgelegt, das von Fachleuten als wirklich ambitioniert bewertet wird #COP30
www.wri.org/news/stateme...
www.wri.org/news/stateme...
STATEMENT: Mexico Announces Strong New Climate Commitment
Mexico has officially approved and presented its new Nationally Determined Contribution (NDC) at COP30. The plan marks a milestone in the country’s climate policy, introducing for the first time an ab...
www.wri.org
November 12, 2025 at 10:14 AM
Mexiko hat gestern ein Klimaziel für 2035 vorgelegt, das von Fachleuten als wirklich ambitioniert bewertet wird #COP30
www.wri.org/news/stateme...
www.wri.org/news/stateme...
Reposted by Siawoosh Mohammadi
Eine exklusive Forsa-Umfrage für Table.Briefings zeigt: Auch unter CDU/CSU- und SPD-Wählern fordern viele mehr #Klimaschutz. Und selbst in der wirtschaftlich schwierigen Lage soll das deutsche Klimaziel nicht aufgeweicht werden, so die Befragten. 1/3
table.media/climate/them...
table.media/climate/them...
November 11, 2025 at 8:24 AM
Eine exklusive Forsa-Umfrage für Table.Briefings zeigt: Auch unter CDU/CSU- und SPD-Wählern fordern viele mehr #Klimaschutz. Und selbst in der wirtschaftlich schwierigen Lage soll das deutsche Klimaziel nicht aufgeweicht werden, so die Befragten. 1/3
table.media/climate/them...
table.media/climate/them...
Reposted by Siawoosh Mohammadi
Ihr glaubt gar nicht, wie häufig grad in französischen Nachrichten die deutsche Regierung zitiert wird:
Sie taugt stels als Beispiel für den Rückschritt in der Klimapolitik vor der Klimakonferenz:
Schließlich will sie das EU-Verkaufsverbot von neuen Diesel- und Benzin-Autos ab 2035 kippen #rollback
Sie taugt stels als Beispiel für den Rückschritt in der Klimapolitik vor der Klimakonferenz:
Schließlich will sie das EU-Verkaufsverbot von neuen Diesel- und Benzin-Autos ab 2035 kippen #rollback
November 10, 2025 at 9:12 AM
Ihr glaubt gar nicht, wie häufig grad in französischen Nachrichten die deutsche Regierung zitiert wird:
Sie taugt stels als Beispiel für den Rückschritt in der Klimapolitik vor der Klimakonferenz:
Schließlich will sie das EU-Verkaufsverbot von neuen Diesel- und Benzin-Autos ab 2035 kippen #rollback
Sie taugt stels als Beispiel für den Rückschritt in der Klimapolitik vor der Klimakonferenz:
Schließlich will sie das EU-Verkaufsverbot von neuen Diesel- und Benzin-Autos ab 2035 kippen #rollback
Reposted by Siawoosh Mohammadi
We just published a paper in PNAS, showing microstructural changes to the hippocampus in aging and presymptomatic Alzheimer's disease - in humans, in vivo.
We continue to show the value of structural MRI beyond simply measuring large-scale atrophy!
Read here: ow.ly/1NvV50XkXnX
We continue to show the value of structural MRI beyond simply measuring large-scale atrophy!
Read here: ow.ly/1NvV50XkXnX
November 9, 2025 at 5:00 PM
We just published a paper in PNAS, showing microstructural changes to the hippocampus in aging and presymptomatic Alzheimer's disease - in humans, in vivo.
We continue to show the value of structural MRI beyond simply measuring large-scale atrophy!
Read here: ow.ly/1NvV50XkXnX
We continue to show the value of structural MRI beyond simply measuring large-scale atrophy!
Read here: ow.ly/1NvV50XkXnX
Reposted by Siawoosh Mohammadi
#neuroscience2025: Come and meet four of us of the @jonasobleser.bsky.social lab and some of our work at Society for Neuroscience San Diego 2025 next week, we will have 4 posters in the TUESDAY PM (1-5 pm) SESSION: @uniluebeck.bsky.social @sarahtune.bsky.social
November 6, 2025 at 7:36 PM
#neuroscience2025: Come and meet four of us of the @jonasobleser.bsky.social lab and some of our work at Society for Neuroscience San Diego 2025 next week, we will have 4 posters in the TUESDAY PM (1-5 pm) SESSION: @uniluebeck.bsky.social @sarahtune.bsky.social
Reposted by Siawoosh Mohammadi
We wrote a blog post about common misconceptions of basic EPI parameters.
Test your knowledge of EPI myths. layerfmri.com/epimyths/ 1/3
Test your knowledge of EPI myths. layerfmri.com/epimyths/ 1/3
November 4, 2025 at 9:28 PM
We wrote a blog post about common misconceptions of basic EPI parameters.
Test your knowledge of EPI myths. layerfmri.com/epimyths/ 1/3
Test your knowledge of EPI myths. layerfmri.com/epimyths/ 1/3
Reposted by Siawoosh Mohammadi
Please repost! I am looking for a PhD candidate in the area of Computational Cognitive Neuroscience to start in early 2026.
The position is funded as part of the Excellence Cluster "The Adaptive Mind" at @jlugiessen.bsky.social.
Please apply here until Nov 25:
www.uni-giessen.de/de/ueber-uns...
The position is funded as part of the Excellence Cluster "The Adaptive Mind" at @jlugiessen.bsky.social.
Please apply here until Nov 25:
www.uni-giessen.de/de/ueber-uns...
November 4, 2025 at 1:57 PM
Please repost! I am looking for a PhD candidate in the area of Computational Cognitive Neuroscience to start in early 2026.
The position is funded as part of the Excellence Cluster "The Adaptive Mind" at @jlugiessen.bsky.social.
Please apply here until Nov 25:
www.uni-giessen.de/de/ueber-uns...
The position is funded as part of the Excellence Cluster "The Adaptive Mind" at @jlugiessen.bsky.social.
Please apply here until Nov 25:
www.uni-giessen.de/de/ueber-uns...
Wow!
November 1, 2025 at 1:56 PM
Wow!
Reposted by Siawoosh Mohammadi
By comparing differently tuned glomeruli, this work shows that the brain uses different circuit layouts for specialised vs general smells, offering new insight into how odour meaning is encoded.
buff.ly/XDmo4Ue
buff.ly/XDmo4Ue
October 28, 2025 at 4:11 PM
By comparing differently tuned glomeruli, this work shows that the brain uses different circuit layouts for specialised vs general smells, offering new insight into how odour meaning is encoded.
buff.ly/XDmo4Ue
buff.ly/XDmo4Ue
Reposted by Siawoosh Mohammadi
Of course most exciting for me: cytoarchitectonic proof that the VIM exists (and is not a subunit of VL as implied by the Jones nomenclature).
October 28, 2025 at 8:36 AM
Of course most exciting for me: cytoarchitectonic proof that the VIM exists (and is not a subunit of VL as implied by the Jones nomenclature).
Reposted by Siawoosh Mohammadi
How are auditory features represented across the #AuditoryPathway? @bathellierlab.bsky.social show that #auditory feature tuning emerges through a mix of gradual & stepwise changes, with early representation of simple features & later refinement of complex ones @plosbiology.org 🧪 plos.io/4oi0XCY
October 27, 2025 at 5:41 PM
How are auditory features represented across the #AuditoryPathway? @bathellierlab.bsky.social show that #auditory feature tuning emerges through a mix of gradual & stepwise changes, with early representation of simple features & later refinement of complex ones @plosbiology.org 🧪 plos.io/4oi0XCY
Reposted by Siawoosh Mohammadi
When #HHMIJanelia released the #Drosophila hemibrain in 2020, rendering all cell types at once with full shading/shadows was too hard, so the video showed them region by region. Technology has since advanced, and I went back and rendered them all together. I like how it shows the internal structure.
October 27, 2025 at 8:16 AM
When #HHMIJanelia released the #Drosophila hemibrain in 2020, rendering all cell types at once with full shading/shadows was too hard, so the video showed them region by region. Technology has since advanced, and I went back and rendered them all together. I like how it shows the internal structure.
Reposted by Siawoosh Mohammadi
Great render of the beautiful drosophila hemibrain! 👇
When #HHMIJanelia released the #Drosophila hemibrain in 2020, rendering all cell types at once with full shading/shadows was too hard, so the video showed them region by region. Technology has since advanced, and I went back and rendered them all together. I like how it shows the internal structure.
October 27, 2025 at 9:32 AM
Great render of the beautiful drosophila hemibrain! 👇
Reposted by Siawoosh Mohammadi
Reposted by Siawoosh Mohammadi
We are looking for “Data Scientist or ML/AI expert” who will work at the cutting edge of data science and neuromaging in a collaboration between @mpicbs.bsky.social and the Max Planck Computing and Data Facility (MPCDF).
Deadline: 10th Nov. 2025.
Apply here:
Deadline: 10th Nov. 2025.
Apply here:
Data Scientist or Machine Learning / AI expert (m/f/d)
Data Scientist or Machine Learning / AI expert (m/f/d) to join the AI and High-Performance Data Analytics division of MPCDF.
www.mpcdf.mpg.de
October 13, 2025 at 11:00 AM
We are looking for “Data Scientist or ML/AI expert” who will work at the cutting edge of data science and neuromaging in a collaboration between @mpicbs.bsky.social and the Max Planck Computing and Data Facility (MPCDF).
Deadline: 10th Nov. 2025.
Apply here:
Deadline: 10th Nov. 2025.
Apply here:
On my way to Marseille - waiting at Munich airport for my flight. Unfortunately, there was (time-wise) no affordable way from Hamburg to Marseille with the train. So, I had to take the flight option. But still, I am looking forward to seeing all my colleague and friends in person at the ESMRMB!
October 7, 2025 at 5:26 PM
On my way to Marseille - waiting at Munich airport for my flight. Unfortunately, there was (time-wise) no affordable way from Hamburg to Marseille with the train. So, I had to take the flight option. But still, I am looking forward to seeing all my colleague and friends in person at the ESMRMB!
Reposted by Siawoosh Mohammadi
HippoMaps: an open-source resource for studying the human hippocampus at different scales and with different modalities.
www.nature.com/articles/s41...
@jordandekraker.bsky.social @borismontreal.bsky.social @jclauneuro.bsky.social @neuroak.bsky.social @sofievalk.bsky.social @donnagift.bsky.social
www.nature.com/articles/s41...
@jordandekraker.bsky.social @borismontreal.bsky.social @jclauneuro.bsky.social @neuroak.bsky.social @sofievalk.bsky.social @donnagift.bsky.social
HippoMaps: multiscale cartography of human hippocampal organization - Nature Methods
HippoMaps provides an open-source resource for studying the human hippocampus at different scales and with different modalities such as histology, fMRI, structural MRI and EEG.
www.nature.com
October 3, 2025 at 12:50 PM
HippoMaps: an open-source resource for studying the human hippocampus at different scales and with different modalities.
www.nature.com/articles/s41...
@jordandekraker.bsky.social @borismontreal.bsky.social @jclauneuro.bsky.social @neuroak.bsky.social @sofievalk.bsky.social @donnagift.bsky.social
www.nature.com/articles/s41...
@jordandekraker.bsky.social @borismontreal.bsky.social @jclauneuro.bsky.social @neuroak.bsky.social @sofievalk.bsky.social @donnagift.bsky.social
I am looking forward to the meeting!
⏳ 1 week to go until #ESMRMB2025 in Marseille!
Get ready for a legendary edition: inspiring talks, collaborative WG sessions, eye-catching posters, treasure hunt, escape room & more!
📅 Full program: esmrmb2025.org
#MRI #Research #Networking
Get ready for a legendary edition: inspiring talks, collaborative WG sessions, eye-catching posters, treasure hunt, escape room & more!
📅 Full program: esmrmb2025.org
#MRI #Research #Networking
October 1, 2025 at 8:23 AM
I am looking forward to the meeting!