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Mario Dipoppa @mariodipoppa.bsky.social · 16d

Great opportunity in NeuroAI! 👀

Alessandro Ingrosso @aingrosso.bsky.social · 16d

Please RT - Open PhD position in my group at the Donders Center for Neuroscience, Radboud University.

We're looking for a PhD candidate interested in developing theories of learning in neural networks.

Applications are open until October 20th.

For more info: www.ru.nl/en/working-a...

PhD Position: Theory of Learning in Artificial and Biologically Inspired Neural Networks | Radboud University

Do you want to work as a PhD candidate Theory of Learning in Artificial and Biologically Inspired Neural Network? Check our vacancy!

www.ru.nl

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Reposted by Mario Dipoppa

Andrew Tan @andrewtanyongyi.bsky.social · Aug 8

Dario Ringach gave a really interesting talk at the National University of Singapore today about results with Elaine Tring and @mariodipoppa.bsky.social adaptation of population responses in mouse visual cortex. Remarkably data was well described by log(r(x)/r(y) ~ log(p(y)/p(x) 😃

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Mario Dipoppa @mariodipoppa.bsky.social · May 21

Congratulations, Matteo! 👏

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Reposted by Mario Dipoppa

Alessandro Ingrosso @aingrosso.bsky.social · May 1

Our paper on the statistical mechanics of transfer learning is now published in PRL. Franz-Parisi meets Kernel Renormalization in this nice collaboration with friends in Bologna (F. Gerace) and Parma (P. Rodondo, R. Pacelli).
journals.aps.org/prl/abstract...

Statistical Mechanics of Transfer Learning in Fully Connected Networks in the Proportional Limit

Tools from spin glass theory such as the replica method help explain the efficacy of transfer learning.

journals.aps.org

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Reposted by Mario Dipoppa

Ling-Qi Zhang @lingqiz.bsky.social · Apr 24

Very happy to see our work finally in print!
www.pnas.org/doi/10.1073/...

TLDR: Tilt illusion is not a bug, but a feature of a well-designed visual system that maximizes information capacity adaptively based on spatial context. (1/6)

The tilt illusion arises from an efficient reallocation of neural coding resources at the contextual boundary | PNAS

The tilt illusion—a bias in the perceived orientation of a center stimulus induced by an oriented surround—illustrates how context shapes visual pe...

www.pnas.org

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Mario Dipoppa @mariodipoppa.bsky.social · Apr 24

Congratulations and thank you for the mention! We really enjoyed your paper!

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Reposted by Mario Dipoppa

Ramon Nogueira @rnogueiraneuro.bsky.social · Apr 9

The Grossman Center at UChicago is hiring Center Postdocs! Great scientific environment in a great city. Competitive salaries and freedom to work with any of the center PIs. The deadline is May 1st. DM me if you have any questions. neuroscience.uchicago.edu/grossmancent...

Postdoctoral Fellows in Theoretical and Computational Neuroscience

neuroscience.uchicago.edu

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Mario Dipoppa @mariodipoppa.bsky.social · Mar 25

In previous work with Dario Ringach (Tring et al. 2023), we discovered a universal power law of visual adaptation. With @matteomariani.bsky.social, we now show with a computational model that this power law can be explained by efficient coding! We will present this at #Cosyne2025, Thu. poster 1-031.

Matteo Mariani @matteomariani.bsky.social · Mar 25

📣 We investigated a puzzling empirical result: adaptation induces a universal power law linking neural population responses and stimulus statistics. We explained the power law with an efficient coding model and interpreted its exponent as balancing energy saving and representation fidelity.

A universal power law optimizes energy and representation fidelity in visual adaptation

Sensory systems continuously adapt their responses based on the probability of encountering a given stimulus. In the mouse primary visual cortex (V1), the average population response is a power law of...

www.biorxiv.org

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Reposted by Mario Dipoppa

annechurchland.bsky.social @annechurchland.bsky.social · Feb 26

I’ve been overwhelmed trying to keep up with everything that’s happening at the NIH. I wondered if others were likewise overwhelmed so I am going to start regularly posting videos with what I know. Pls feel free to leave suggestions and comments. youtu.be/MvgNHWSJtH0

Science Update With Anne And Alex Feb 25 2025

YouTube video by anne churchland

youtu.be

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Reposted by Mario Dipoppa

Ken Miller @kenmiller.bsky.social · Jan 31

New preprint: "The geometry of the neural state space of decisions", work by Mauro Monsalve-Mercado, buff.ly/42wVHD5. Surprising results & predictions! (Thread) We analyze neuropixel population recordings in macaque area LIP during a reaction time, random-dot motion 1/

Picture of neural manifolds for the two choices in a decision-making task, depicted in 3D and in 2D

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Reposted by Mario Dipoppa

Samantha Butler @samanthabutler.bsky.social · Dec 20

Please retweet! Open rank faculty search in the basic sciences at UCLA David School of Medicine. Multiple positions are available - the application deadline is 19th January. Please apply here:

recruit.apo.ucla.edu/JPF10062

Open Rank Faculty Position in David Geffen School of Medicine at UCLA

University of California, Los Angeles is hiring. Apply now!

recruit.apo.ucla.edu

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Reposted by Mario Dipoppa

Aman Saleem @amansaleem.bsky.social · Nov 27

New job alert!
My lab (saleemlab.com) has a new postdoc / senior postdoc opening. They will be part of an exciting research supported by ERC & UKRI, studying vision during navigation. Projects range from purely computational to performing new physiological recordings.

Saleem lab

saleemlab.com

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Mario Dipoppa @mariodipoppa.bsky.social · Dec 17

Our work on how visual adaptation changes the geometry of neural representations in V1 is now on bioRxiv:

bioRxiv Neuroscience @biorxiv-neursci.bsky.social · Dec 16

Adaptation shapes the representational geometry in mouse V1 to efficiently encode the environment https://www.biorxiv.org/content/10.1101/2024.12.11.628035v1

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Reposted by Mario Dipoppa

Ramon Nogueira @rnogueiraneuro.bsky.social · Dec 17

Hello world, my first post in Bluesky! Adaptation to a frequent stimulus reduces neuronal activity but increases discriminability in V1. These two effects can be observed as well in the geometry of representations and they are reproduced in an ANN with metabolic constraints.

Mario Dipoppa @mariodipoppa.bsky.social · Dec 16

New results! Visual adaptation changes the geometry of V1 population activity: frequent stimuli elicit smaller responses but become more discriminable. Similar results are seen in ANNs trained with metabolic constraints, suggesting these changes emerge from efficient coding. bit.ly/3VJHXRn

Adaptation shapes the representational geometry in mouse V1 to efficiently encode the environment

Sensory adaptation dynamically changes neural responses as a function of previous stimuli, profoundly impacting perception. The response changes induced by adaptation have been characterized in detail...

bit.ly

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Reposted by Mario Dipoppa

stefanofusi.bsky.social @stefanofusi.bsky.social · Dec 16

The geometry of adaptation! My first excursion in the V1 territory. Great collaboration with @mariodipoppa.bsky.social @matteocarandini.bsky.social and many others

Mario Dipoppa @mariodipoppa.bsky.social · Dec 16

New results! Visual adaptation changes the geometry of V1 population activity: frequent stimuli elicit smaller responses but become more discriminable. Similar results are seen in ANNs trained with metabolic constraints, suggesting these changes emerge from efficient coding. bit.ly/3VJHXRn

Adaptation shapes the representational geometry in mouse V1 to efficiently encode the environment

Sensory adaptation dynamically changes neural responses as a function of previous stimuli, profoundly impacting perception. The response changes induced by adaptation have been characterized in detail...

bit.ly

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Mario Dipoppa @mariodipoppa.bsky.social · Dec 16

New results! Visual adaptation changes the geometry of V1 population activity: frequent stimuli elicit smaller responses but become more discriminable. Similar results are seen in ANNs trained with metabolic constraints, suggesting these changes emerge from efficient coding. bit.ly/3VJHXRn

Adaptation shapes the representational geometry in mouse V1 to efficiently encode the environment

Sensory adaptation dynamically changes neural responses as a function of previous stimuli, profoundly impacting perception. The response changes induced by adaptation have been characterized in detail...

bit.ly

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Mario Dipoppa @mariodipoppa.bsky.social · Aug 19

I’ve just joined and looking forward to connect with others from computational and systems neuroscience community and beyond!

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