Nils Kroemer
@nbkroemer.bsky.social
3.6K followers 1.9K following 280 posts
Neuroscientist | Professor of Medical Psychology at U Bonn | PI Neuroscience of Motivation, Action, & Desire Lab at U Bonn & Tübingen aka @cornu_copiae
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nbkroemer.bsky.social
Do you get in a bad mood if you are hungry? Over 4 weeks with EMA+CGM, we tested if mood shifts are subconsciously driven by glucose levels or ratings of metabolic state #neuroskyence 🩺

Work w/ @kristinkaduk.bsky.social @akuehnel.bsky.social @derntllab.bsky.social

www.biorxiv.org/content/10.1...
Summary of the study. A: The schematic shows the experimental procedure, illustrating five weekly lab visits followed by 2 MR visits labeled from S1 to S7. After the first session (S1), participants undergo four weeks of continuous glucose monitoring (CGM) combined with ecological momentary assessment (EMA). B: The CGM system uses a small flex sensor placed at the posterior upper arm that is inserted in the subcutaneous fatty tissue. The glucose sensor, positioned beneath the skin surface layers (epidermis and dermis), measures glucose levels in the interstitial fluid within the subcutaneous adipose tissue. The data is wirelessly sent via near field communication (NFC) to the FreeStyle Libre 3 app on the participant’s cell phone. The accuracy of the sensor concerning capillary glucose has been validated (Alva et al., 2022). C: Participants rate their metabolic and mood states twice daily using a visual analog scale (VAS), ranging from 0 (not at all) to 100 (very).
Reposted by Nils Kroemer
nicolecrust.bsky.social
Please spread the word! I am recruiting a PhD student this cycle (Fall 2026 start) to join my team in a new venture: the neuroscience of mood.

If you are curious to learn more, this short talk provides a good overview of why, what and how.

www.youtube.com/watch?v=gjIK...
Nicole Rust - The representation of mood in the primate insula (May 6, 2025)
YouTube video by Simons Foundation
www.youtube.com
nbkroemer.bsky.social
Cheers, Maria 🥂. We should celebrate as well at some point 🎉
Reposted by Nils Kroemer
Reposted by Nils Kroemer
carmensandi10.bsky.social
Very happy to share our new paper in Biological Psychiatry, showing that Urolithin A reverses high anxiety by repairing mitochondrial function in the nucleus accumbens.

Big kudos to first co-authors David Mallet & Doğukan Ülgen, our amazing team, and collaborators!

🔗 Paper: doi.org/10.1016/j.bi...
Redirecting
doi.org
Reposted by Nils Kroemer
ayejaysimon.bsky.social
New preprint alert!

We used connectome-based predictive modeling in a transdiagnostic sample to identify brain network correlates of wide array of behavioral measures. We also identify where networks supporting cognition overlap with those linked to diagnostically related clinical symptomatology.
Transdiagnostic connectome-based predictive modeling of many behavioral phenotypes reveals brain network mediators of clinical-cognitive relationships
Connectome-based predictive modeling (CPM) applied to functional MRI connectivity data can identify brain networks that vary with behavioral measures across subjects. The prediction strength also prov...
www.biorxiv.org
Reposted by Nils Kroemer
vhazzard.bsky.social
So grateful to the teens who shared their experiences with us to help develop the Co-occurring Insecurities Model, a new working theoretical model to explain the link between #foodinsecurity and #bingeeating. Full text: authors.elsevier.com/a/1loUMiVKTo...
Reposted by Nils Kroemer
dingdingpeng.the100.ci
Happy to announce that I'll give a talk on how we can make rigorous causal inference more mainstream 📈

You can sign up for the Zoom link here: tinyurl.com/CIIG-JuliaRo...
Causal inference interest group, supported by the Centre for Longitudinal Studies

Seminar series
20th October 2025, 3pm BST (UTC+1)

"Making rigorous causal inference more mainstream"
Julia Rohrer, Leipzig University

Sign up to attend at tinyurl.com/CIIG-JuliaRohrer
Reposted by Nils Kroemer
borismontreal.bsky.social
🚨 New paper in Nature Methods:
HippoMaps: multiscale cartography of the human hippocampus

Open-source tools & data to explore structure and function of the 🍤🧠 (histology, in/ex vivo MRI, iEEG)

Led by @jordandekraker.bsky.social

docs: hippomaps.readthedocs.io
paper: doi.org/10.1038/s415...
Reposted by Nils Kroemer
Reposted by Nils Kroemer
benjaminkay.bsky.social
Ever wondered if your interesting brain-behavior correlation was over- or under-estimated due to head motion, but were afraid to ask? We’ve created a motion impact score for detecting spurious brain-behavior associations, now available in Nature Communications!
doi.org/10.1038/s414...
nbkroemer.bsky.social
Congratulations 👏. At some point in life, it feels better how one hardly grows 'old', also in the German academic system 😄
Reposted by Nils Kroemer
eikofried.bsky.social
Intervening on a central node in a network likely does little given that its connected neighbors will "flip it back" immediately. Happy to see this position supported now.

"Change is most likely [..] if it spreads first among relatively poorly connected nodes."

www.nature.com/articles/s41...
Transformation starts at the periphery of networks where pushback is less - Scientific Reports
Scientific Reports - Transformation starts at the periphery of networks where pushback is less
www.nature.com
Reposted by Nils Kroemer
vincentcostaphd.bsky.social
This is fantastic work.

Monkeys show the same pattern of “optimistic” exploration in multi-arm bandits www.biorxiv.org/content/10.1...
nbkroemer.bsky.social
Now that is the kind of future I had in mind when I started working on neuroscience 😮
mbeyeler.bsky.social
👁️🧠 New preprint: We demonstrate the first data-driven neural control framework for a visual cortical implant in a blind human!

TL;DR Deep learning lets us synthesize efficient stimulation patterns that reliably evoke percepts, outperforming conventional calibration.

www.biorxiv.org/content/10.1...
Diagram showing three ways to control brain activity with a visual prosthesis. The goal is to match a desired pattern of brain responses. One method uses a simple one-to-one mapping, another uses an inverse neural network, and a third uses gradient optimization. Each method produces a stimulation pattern, which is tested in both computer simulations and in the brain of a blind participant with an implant. The figure shows that the neural network and gradient methods reproduce the target brain activity more accurately than the simple mapping.
Reposted by Nils Kroemer
jingnandu.bsky.social
Our new paper is out now in Neuron! 🎉 With @vaibhavtripathi.bsky.social @maxwellelliott.bsky.social Joanna Ladopoulou, Wendy Sun, Mark Eldaief, and Randy Buckner

Paper link: www.sciencedirect.com/science/arti...
Reposted by Nils Kroemer
lhuntneuro.bsky.social
Looking for a PhD next year? Want to come and work on the next generation of OPM-MEG/EEG biomarkers in computational psychiatry?

Apply for our MRC iCase studentship with @mkflugge.bsky.social, collabs with @lilweb.bsky.social + industrial placement at P1Vital:
www.medsci.ox.ac.uk/study/gradua...
Development of robust, single-subject markers of predictive inference for computational psychiatry
www.medsci.ox.ac.uk
Reposted by Nils Kroemer
imagingneurosci.bsky.social
New paper in Imaging Neuroscience by Roza G. Bayrak, Catie Chang, et al:

DeepPhysioRecon: Tracing peripheral physiology in low frequency fMRI dynamics

doi.org/10.1162/IMAG...