Fabrizio Musacchio
@fabmusacchio.bsky.social
530 followers 280 following 72 posts
Hi 👋 I'm a postdoc in the #Neuroimmunology and #Imaging group at the @dzne.science Bonn 🧪🔬 Passionate about #ComputationalNeuroscience 🧠💻 and #NeuralModeling 🧮 🌍 fabriziomusacchio.com 👨‍💻 github.com/FabrizioMusacchio 🐘 sigmoid.social/@pixeltracker
Posts Media Videos Starter Packs
Reposted by Fabrizio Musacchio
anhhle2702.bsky.social
I found these immune cells just finished mitosis but their midbody is still yet to be resolved. How cool? If you zoom in to the midbody, you can see its classical shape just like in the textbooks. I love these little details.
Reposted by Fabrizio Musacchio
j-b-eppler.bsky.social
Loved working with our amazing outreach team on this short video about representational drift! @crmatematica.bsky.social

🧠🧪

In it, I explain the points we make in our recent review in CONEUR:

doi.org/10.1016/j.co...
crmatematica.bsky.social
Memories feel fixed, but the brain never stands still.

@j-b-eppler.bsky.social talks about representational drift; how memories remain stable even as the neurons behind them constantly change.

youtu.be/z63fmYSBcB0

#Neuroscience #Mathematics #Memory #Brain #CognitiveScience #Neurobiology #Research
Why Your Brain Is Never Still: Representational Drift and Statistical Learning
YouTube video by Centre de Recerca Matemàtica
youtu.be
Reposted by Fabrizio Musacchio
gershbrain.bsky.social
Really interesting work by Bakhurin and colleagues challenging the reward prediction error hypothesis of dopamine:
www.nature.com/articles/s41...
I love this figure which both echoes and undermines the famous figure from Schultz et al. (1997).
Reposted by Fabrizio Musacchio
ibehave.bsky.social
🎓 Join us for the next #iBehave Seminar with Prof. Maneesh Sahani @ucl.ac.uk

Title: The Structure of Serial Memory Effects in Perception

🗓 Oct 16, 2025 | 🕓 16:00

📍 Lecture Hall, DZNE Bonn (on-site only)

Host: Tatjana Tchumatchenko @unibonn.bsky.social UniklinikBonn, IEECR

#seminar #neuroscience
Reposted by Fabrizio Musacchio
engeltatiana.bsky.social
A study led by Cina Aghamohammadi is now out in ‪@natcomms.nature.com‬! We developed a mathematical framework for partitioning spiking variability, which revealed that spiking irregularity is nearly invariant for each neuron and decreases along the cortical hierarchy.
www.nature.com/articles/s41...
fabmusacchio.bsky.social
This evening was the colloquium in honour of Prof. Bülent Tezkan’s retirement at my old institute. Both he and Joachim Saur guided my early steps in #geophysics, from my bachelor’s thesis 🎓 to my PhD 🪐. Seeing so many familiar faces and returning to the institute brought back many memories.
fabmusacchio.bsky.social
Great having Mark Schnitzer at today’s #iBehave lecture at the @dzne.science! Fascinating talk on cell-type specific #VoltageImaging 🧠⚡ of neural #spiking, #oscillations, #waves, and #MemoryDynamics. Showing that spike-resolution #imaging 🔬 in vivo is finally there 💪

#Neuroscience 🧪 #DZNE
Reposted by Fabrizio Musacchio
nest-initiative.org
We are excited to share this paper by Jiang et al. on advancing our understanding how astrocytes play a role in brain function and plasticity!

journals.plos.org/ploscompbiol...
Illustration of the biological mechanisms captured by the model framework for astrocytes
Reposted by Fabrizio Musacchio
ibehave.bsky.social
🔬 Join us for the next iBehave Seminar Series 2025 lecture with Prof. Dr. Mark Schnitzer @Stanford on Oct 9, 11:00 DZNE Bonn. Host: @jangrundemann.bsky.social

Title: Cell-type specific voltage imaging of neural spiking, oscillations, waves, and memory dynamics

📧 Zoom info: [email protected]
Reposted by Fabrizio Musacchio
fabmusacchio.bsky.social
🧠🧪 #Neurons can communicate via a hidden network of #nanotubes. Chang et al. (2025) show dendritic nanotubes as #actin-based conduits transferring Ca²⁺ + cargo, rising before plaque deposition in 🐁 #cortex. This overlooked pathway may expand views of neuronal communication beyond #synapses.
Intercellular communication in the brain through a dendritic nanotubular network
Intercellular nanotubular networks mediate material exchange, but their existence in neurons remains to be explored in detail. We identified long, thin dendritic filopodia forming direct dendrite–dend...
www.science.org
Reposted by Fabrizio Musacchio
tlmcambridge.bsky.social
🚨 TLM Online Seminar Series - 08.10.25 | 16:00 UK
Pablo Sáez: "Decision-making during cell migration"

Please repost & to attend online please register to our 📧for the zoom link: lists.cam.ac.uk/sympa/subscr...
Poster with a picture of the speaker, Pablo Saez, advertising his talk: Decision Making during cell migrations. Abstract: Moving cells navigate inside living tissues often encountering obstacles and junctions, where their path branches into alternative directions of migration. This is the case of cells moving on top or within blood vessels, which often bifurcate into branches. Cells have diverse migratory strategies that differentially rely on the adhesion to the substrate. Cells that undergo mesenchymal migration are highly dependent on the adhesion to the substrate, and when facing bifurcations are forced to coordinate the adhesion and detachment of the competing branches. Recent studies showed how the decision is made -to keep or retract a branch and choose a new direction- when there is bias: open versus dead-end, differences in pressure, presence/absence of a chemoattractant. However, much less is know about how cells decide a new direction when the decision is unbiased. Similarly, it is poorly understood how migrating cells coordinate membrane dynamics during branching to maintain a good trade-off between microenvironmental exploration and migratory efficiency. Here, we use in vitro live-cell imaging using different levels of complexity, and advanced image analysis to analyze the response of migrating cells when facing symmetric junctions, and extreme branching when cells simultaneously face several bifurcations. We found that actin and membrane dynamics play a key role to choose a new direction path in both cases i) when cells face a single junction (Ron et al. 2024), and ii) when cells exhibit high levels of branching because they face several junctions at the same time (Liu et al.). In addition, we found that migrating immune cells have a fine tune regulation of branching in order to coordinate surveillance and migration. These results shed light on the mechanisms by which cells resolve unbiased junctions and branching during cell migration.
fabmusacchio.bsky.social
The #BernsteinConference 2025 just ended. A fantastic meeting with inspiring talks and posters, lively discussions, and valuable exchanges across #Neuroscience & #CompNeuro. Many thanks to the organizers and all who made this event possible! 💪👏
Reposted by Fabrizio Musacchio
schottdorflab.bsky.social
Using calcium imaging with single cell resolution across brain areas while mice solve two VR navigation problems, we discovered that neural manifolds can change in size based on working memory demands! Check out Mika Diamanti's amazing work: www.biorxiv.org/content/10.1...
Working memory expands shared task representations in cortex
Cognition is thought to emerge from the flexible organization of neural activity, yet how this organization reconfigures across behaviors varying in cognitive load remains unclear. We investigated how...
www.biorxiv.org
Reposted by Fabrizio Musacchio
thetransmitter.bsky.social
Facial movements reflect a mouse’s decision-making patterns independent of their chosen action during a foraging task, per a new study.

By @lauren-schneider.com

#neuroskyence

www.thetransmitter.org/motor-behavi...
Reposted by Fabrizio Musacchio
bluedebris.bsky.social
So cool to walk from Ising models to recurrent network dynamics at the Braitenberg prize ceremony of Sara Solla! At #bernstein conference #compneurosky
fabmusacchio.bsky.social
Curious how #OdorDiscrimination can emerge in a biologically plausible recurrent spiking model/ #SNN? Using e-prop learning, we show heterogeneous #NeuronTuning and population trajectories in #NeuralStateSpace. Come check out my poster (#35) at 👉 #BernsteinConference, today in session I!
fabmusacchio.bsky.social
Just attended the 2-day satellite workshop on #RepresentationalDrift with excellent talks and discussions! A great start to the #BernsteinConference, which starts in less than an hour 👌

#Neuroscience #CompNeuro
Reposted by Fabrizio Musacchio
samuelvaiter.com
Now accepted at #NeurIPS2025 :)
samuelvaiter.com
📣 New preprint 📣

**Differentiable Generalized Sliced Wasserstein Plans**

w/
L. Chapel
@rtavenar.bsky.social

We propose a Generalized Sliced Wasserstein method that provides an approximated transport plan and which admits a differentiable approximation.

arxiv.org/abs/2505.22049 1/5
fabmusacchio.bsky.social
Just arrived in #Frankfurt for the #BernsteinConference 💻🧠 Before it all starts, I had some time to visit the #Senckenberg #Museum. Fittingly, they have a special exhibition on the brain. Couldn’t imagine a better way to kick off the trip! 😅
Reposted by Fabrizio Musacchio
modirshanechi.bsky.social
New in @pnas.org: doi.org/10.1073/pnas...

We study how humans explore a 61-state environment with a stochastic region that mimics a “noisy-TV.”

Results: Participants keep exploring the stochastic part even when it’s unhelpful, and novelty-seeking best explains this behavior.

#cogsci #neuroskyence