Nils Kroemer
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nbkroemer.bsky.social
Nils Kroemer
@nbkroemer.bsky.social
3.7K followers 1.9K following 290 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
Nils Kroemer @nbkroemer.bsky.social · Apr 3
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).
nbkroemer.bsky.social
Sunday night editing of @mkoerdel.bsky.social's latest draft on the association between glucose levels and stress with a glass of wine. This will age into a fine preprint soon.
kermit the frog is wearing a suit and tie and holding a glass of wine and saying `` hmm . cheers . ''
ALT: kermit the frog is wearing a suit and tie and holding a glass of wine and saying `` hmm . cheers . ''
media.tenor.com
November 16, 2025 at 9:00 PM
Reposted by Nils Kroemer
danlikesbrains.bsky.social
New perspective paper out now in @plosbiology.org with a few thoughts on #interoception: What it is (or rather is not), how it can inform therapeutic interventions, and where (we think) the field of brain-body #neuroskyence has yet to find more solid ground to build on.

doi.org/10.1371/jour...
Beyond the buzz: Grounding interoceptive interventions in mechanisms of brain–body coupling
The field of interoception research is growing at a rapid pace. This Perspective highlights why establishing both mechanistic insight and construct validity will be critical prerequisites for developi...
doi.org
November 14, 2025 at 7:39 AM
Reposted by Nils Kroemer
wiringthebrain.bsky.social
Structure in noise: Recurrent connectivity shapes neural variability to balance perceptual and cognitive demands in the human brain www.cell.com/neuron/fullt... (noise is a tunable feature, not a bug)
Structure in noise: Recurrent connectivity shapes neural variability to balance perceptual and cognitive demands in the human brain
Does neural variability reflect random noise or a feature that benefits adaptive behavior? Using intracranial recordings in humans, Terlau et al. demonstrate that neural variability results from the r...
www.cell.com
November 13, 2025 at 1:45 PM
Reposted by Nils Kroemer
beckyneuro.bsky.social
First up, this paper led by Bronagh McCoy: journals.plos.org/ploscompbiol...

When noise and volatility are independently manipulated people behave differently depending on their anxious traits.
The relationship between anxious traits and learning about changes in stochasticity and volatility
Author summary Adapting to changes in our environment is a daily endeavour. To do so, humans and animals alike make use of feedback to guide future actions. Uncertainty in the environment can arise fr...
journals.plos.org
November 13, 2025 at 11:51 AM
Reposted by Nils Kroemer
northernthrux.bsky.social
14 months after submission, our article “Stimulus-modulated approach to steady state (SASS): a flexible paradigm for event-related fMRI" is now out in @natmethods.nature.com . You can read it here rdcu.be/ePJo6
It is the first first author paper from my student @renilmathew.bsky.social 👏🏽👏🏽👏🏽 …1/N
Stimulus-modulated approach to steady state (SASS): a flexible paradigm for event-related fMRI
Nature Methods - Stimulus-modulated approach to steady state (SASS) is an acquisition scheme for event-related fMRI that generates data with high temporal signal-to-noise ratios interspaced with...
rdcu.be
November 13, 2025 at 12:23 PM
Reposted by Nils Kroemer
bertogliolab.bsky.social
Unpredictable stress boosts perceptual learning and alters glucocorticoid and norepinephrine receptors in rats’ dorsal hippocampus
www.nature.com/articles/s41...
Unpredictable stress boosts perceptual learning and alters glucocorticoid and norepinephrine receptors in rats’ dorsal hippocampus - Translational Psychiatry
Translational Psychiatry - Unpredictable stress boosts perceptual learning and alters glucocorticoid and norepinephrine receptors in rats’ dorsal hippocampus
www.nature.com
November 13, 2025 at 9:28 AM
Reposted by Nils Kroemer
plosbiology.org
How do internal bodily rhythms influence #brain activity & motor function? @tahnee-engelen.bsky.social &co show that #cardiac, #respiratory & #gastric rhythms independently modulate motor excitability, revealing distinct #interoceptive profiles across individuals @plosbiology.org 🧪 plos.io/4nMtpLT
Top: Experimental set up. Single pulses of TMS were applied to the hand area of the right primary motor cortex with an inter-pulse interval randomized between 6 and 10 s. Simultaneously, the neuronavigated coil position (yellow), electrocardiogram (red), respiratory signal (blue), electrogastrogram (green), and electromyography from the left hand (gray) were recorded. The figure shows traces of a 20-s time segment from one participant of the cardiac (raw), respiratory (filtered), gastric (filtered), and EMG (raw) signals. The experimental measure was the Motor Evoked Potential amplitude measured on a hand muscle (first dorsal interosseous), analyzed against the phase of the cardiac, respiratory, and gastric rhythms. Note that the three rhythms have very different periods (~1 s for the heart, ~ 5 s for respiration, and ~20 s for the gastric rhythm). Bottom: Artwork illustrating how rhythms of the internal organs interact with the moment-to-moment fluctuations observed in corticospinal motor excitability. Image depicts an outline of a brain with representations of the three rhythmic organs influencing the motor system: the heart, lungs, and stomach. Image credit: Tahnée Engelen.
November 13, 2025 at 10:17 AM
Reposted by Nils Kroemer
tam-pham.bsky.social
Heart rate variability (HRV) is one of the widely used physiological measures in psychophysiological research. But with over 100 indices to choose from, how do we know which ones to use?

In our latest paper, we take a data-driven approach to help answer this.

doi.org/10.1111/psyp...
1/
November 12, 2025 at 8:36 PM
Reposted by Nils Kroemer
halleeshearer.bsky.social
Excited to share our manuscript about BrainEffeX, a tool for exploring fMRI effect sizes. Includes why we made it, how to use it + contribute, and how we made it.

@sneuroble.bsky.social @psychonetrics.bsky.social
@alexkfischbach.bsky.social
@nichols.bsky.social
@dscheinost.bsky.social & MINDS Lab
November 12, 2025 at 7:46 PM
Reposted by Nils Kroemer
valeriejsydnor.bsky.social
Happy to share our review "Investigating hierarchical critical periods in human neurodevelopment” in @npp-journal.bsky.social! We examine neurobiological, environmental & behavioral evidence for human critical periods in sensory and association cortex +discuss new research directions rdcu.be/eMkVU 🧵
November 11, 2025 at 8:01 PM
Reposted by Nils Kroemer
tkaiser.science
🚀 New paper (open access) out in Cognitive Therapy & Research: we (@herzog.bsky.social, @evalottabrakemeier.bsky.social, @hudsongolino.bsky.social and me) ask whether group‑level symptom‑change networks in CBT actually capture what happens inside each patient. #Psychology #CBT
Must We Always Go Idiographic? - Cognitive Therapy and Research
Purpose While psychological change processes are increasingly assumed to be “non-ergodic”, prompting a shift toward idiographic approaches, the assumption of ergodicity is often accepted a priori rath...
link.springer.com
November 11, 2025 at 9:11 AM
Reposted by Nils Kroemer
goldenneurons.bsky.social
Thrilled to share our new paper, out now in @natneuro.nature.com, uncovering how estradiol, the most potent estrogen, modulates reinforcement learning and reward prediction errors across biological levels. www.nature.com/articles/s41...

#blueprint 1/7
Estrogen modulates reward prediction errors and reinforcement learning - Nature Neuroscience
Dopamine encoding of reward prediction errors naturally fluctuates over females’ reproductive cycles with estrogenic signaling due to reduced expression of dopamine reuptake proteins.
www.nature.com
November 11, 2025 at 2:41 PM
Reposted by Nils Kroemer
kristyn-lizbinski.bsky.social
Excited to share my most recent postdoctoral work in the Jeanne lab @yaleneuro.bsky.social !

“Sensory processing reformats odor coding around valence and dynamics”
www.biorxiv.org/content/10.1...

We ask: how is a sensory code transformed across multiple stages of processing to inform behavior?
Sensory processing reformats odor coding around valence and dynamics
Extracting relevant features of a complex sensory signal typically involves sequential processing through multiple brain regions. However, identifying the logic and mechanisms of these transformations...
www.biorxiv.org
November 9, 2025 at 12:58 PM
Reposted by Nils Kroemer
natmetabolism.nature.com
#Throwback 🧪

REVIEW | Obesity-induced inflammation: connecting the periphery to the brain

O Le Thuc & C García-Cáceres
Obesity-induced inflammation: connecting the periphery to the brain - Nature Metabolism
Le Thuc and García-Cáceres discuss the effect of obesity-induced systemic inflammation on the brain, including hypothalamic circuits for whole-body energy homeostasis as well as cognitive function.
bit.ly
November 9, 2025 at 7:02 PM
Reposted by Nils Kroemer
isaactreves.bsky.social
How does mindfulness change body awareness? Excited to share our meta-analysis on mindfulness training and #interoception. www.nature.com/articles/s41...
November 7, 2025 at 1:50 PM
Reposted by Nils Kroemer
cogneuroludwig.bsky.social
Our paper and research on a #taVNS #MRI setup has now been published: onlinelibrary.wiley.com/doi/10.1111/...

@nbkroemer.bsky.social @glassybrain.bsky.social
cogneuroludwig.bsky.social Mareike Ludwig @cogneuroludwig.bsky.social · Apr 3
#TaVNS inside the MR scanner IS POSSIBLE! ⚡🧠

I hope that this paper and its guidance on the taVNS MRI set-up will help those planning concurrent #fMRI and #vagusnervstimulation

Checkout our new preprint
osf.io/preprints/ps...

Endless gratitude to @nbkroemer.bsky.social & @glassybrain.bsky.social
nbkroemer.bsky.social Nils Kroemer @nbkroemer.bsky.social · Apr 3
In our new preprint, we share insights on improvements to the conventional hardware used for concurrent fMRI + vagus nerve stimulation. It attenuates temperature increases and artifacts. #neuroskyence

Led by @glassybrain.bsky.social & @cogneuroludwig.bsky.social.

osf.io/preprints/ps...
November 7, 2025 at 7:13 AM
Reposted by Nils Kroemer
carstenmurawski.bsky.social
🔈 Our edited volume "Decision Making: Fundamentals and Applications", co-edited with @ulrichettinger.bsky.social and Bert Heinrichs, is out.

url.au.m.mimecastprotect.com/s/9P5mCROAEn...

#DecisionScience #DecisionMaking #Psychology #Psychiatry #Neuroscience #Philosophy
November 4, 2025 at 9:54 PM
Reposted by Nils Kroemer
diabresearch-dzd.bsky.social
Contrary to popular belief, intermittent fasting (time-restricted eating) without reducing calories doesn’t improve #metabolic or #cardiovascular health.
A new study by the DZD-partner DIfE and Charité, led by Prof. Olga Ramich, shows it mainly shifts the body’s internal clocks. ⬇️⬇️⬇️⬇️⬇️
idw-online.de Informationsdienst Wissenschaft - idw @idw-online.de · 12d
Time-Restricted Eating Without Calorie Reduction Don't Improve Metabolic Health, But Shifts the Body's Internal Clocks
Contrary to common assumptions, a new study from the German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE) and Charit?...
weiterlesen
Prof. Dr. Olga Ramich (l.) and Beeke Peters - Copyright DIfE
November 4, 2025 at 9:43 AM
Reposted by Nils Kroemer
kobedesender.bsky.social
Brace yourself: neural and computational insights into
the experience of mental effort! Now out in @cerebralcortex.bsky.social Led by Gaia Corlazzoli.

Paper: desenderlab.com/wp-content/u.... Thread ↓↓↓
November 4, 2025 at 12:37 PM
Reposted by Nils Kroemer
akist.bsky.social
Thrilled to share my very first publication, in Translational Psychiatry! 🧠🧪
We used invasive brain mapping to identify personalized neuromodulation targets for treatment-refractory OCD.
Read it here 👉 www.nature.com/articles/s41...

#OCD #DBS #Neuroscience #Research
Invasive brain mapping identifies personalized therapeutic neuromodulation targets that suppress OCD network activity - Translational Psychiatry
Translational Psychiatry - Invasive brain mapping identifies personalized therapeutic neuromodulation targets that suppress OCD network activity
www.nature.com
November 4, 2025 at 12:41 PM
Reposted by Nils Kroemer
rasmusbruckner.bsky.social
Our new paper is out as a reviewed preprint in @elife.bsky.social!

elifesciences.org/reviewed-pre...

Congrats to @hashimsat.bsky.social and our amazing collaborators on this great team effort.

Special shout-out to @haukeren.bsky.social, who made this possible through his generous support 🙌
October 21, 2025 at 6:41 AM
Reposted by Nils Kroemer
efouragnan.bsky.social
A brain injury was reported in a trial using ultrasound, framed as low-intensity TUS. Kim Butts Pauly and I reviewed the case and disagreed with how it's presented. Key acoustic data are missing.
Case: doi.org/10.1016/j.br...
Letters: www.elsa-fouragnan.com/blog | web.stanford.edu/~kimbutts/Le...
Brain Injury During Focused Ultrasound Neuromodulation for Substance Use Disorder
www.sciencedirect.com
November 3, 2025 at 11:39 AM
Reposted by Nils Kroemer
wanjawolff.bsky.social
Very cool to see this one out now in Physiology & Behavior 🤩

- We tracked boredom-related & diffculty-related effort dynamics & assessed how they covary with changes in electrodermal activity

Led by Vanessa Radtke & w/ @corimartarelli.bsky.social

www.sciencedirect.com/science/arti...
Task-related effort - distinguishing boredom- and difficulty-related effort via electrodermal activity
Exerting effort is central to human performance, with the sources of effort varying across tasks. While traditionally linked to task difficulty, effor…
www.sciencedirect.com
November 3, 2025 at 7:51 AM
Reposted by Nils Kroemer
imagingneurosci.bsky.social
New paper in Imaging Neuroscience by Amélie Lachance, Andréanne Michaud, et al:

Changes in hypothalamic subunits volume and their association with metabolic parameters and gastrointestinal appetite-regulating hormones following bariatric surgery

doi.org/10.1162/IMAG...
November 3, 2025 at 8:02 AM
Reposted by Nils Kroemer
dgnm.bsky.social
👉 We generated a starter pack for #neurogastroenterology and enteric #neuroscience!

Let's connect and bring gut-brain research and clinical neurogastroenterology to the next level! 🌐

go.bsky.app/3Z82PbH
November 1, 2025 at 6:37 PM