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Eric Ceballos

@cebric

Graduate Student in Neuroscience Montreal Neurological Institute McGill University

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17.12.2024
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Latest posts by Eric Ceballos @cebric

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Competitive interactions shape mammalian brain network dynamics and computation - Nature Neuroscience Brain network architecture may balance cooperation and competition across circuits. Here the authors use computational whole-brain modeling across three species to show that models with competition ar...

Just out in @natneuro.nature.com! 🧠

β€œCompetitive interactions shape mammalian brain network dynamics and computation”
www.nature.com/articles/s41...

Is large-scale brain communication purely cooperative β€” or is competition a core organizing principle?

We built 🧠 models to find out: read onπŸ§΅πŸ‘‡

13.03.2026 12:22 πŸ‘ 16 πŸ” 7 πŸ’¬ 1 πŸ“Œ 0
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Spatial organization of AQP4 channels in the human brain: links with perfusion, edema, and disease vulnerability | doi.org/10.64898/202...

Aquaporins are a key component of the brain’s glymphatic system. How are they distributed and how do they relate to healthy brain function and dysfunction? ‡️

11.03.2026 18:56 πŸ‘ 18 πŸ” 7 πŸ’¬ 1 πŸ“Œ 0
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Synaptome architecture shapes regional dynamics in the mouse brain | doi.org/10.1371/jour...

How do diverse synapses relate to the spatial patterning of whole-brain dynamics? Justine Hansen explores @plosbiology.org ‡️

11.03.2026 19:55 πŸ‘ 36 πŸ” 16 πŸ’¬ 1 πŸ“Œ 0
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πŸš€ We are hiring: a PhD position is available in my lab (gozzilab.it) at @iitalk.bsky.social, Italy. Project: large-scale brain network mapping in behaving mice using functional ultrasound imaging (FUSI).
πŸ“… Deadline: March 31
πŸ”— tinyurl.com/4jtetxa9
Reshares appreciated 😊

12.03.2026 12:07 πŸ‘ 12 πŸ” 14 πŸ’¬ 0 πŸ“Œ 1

Excited to introduce ScaRCaMP β€” a highly blue-light resistant red GECI. πŸ”΄

Now live on bioRxiv and marking my first PhD preprint (2nd for the Marko lab).

Would love feedback from the community!!

04.03.2026 22:23 πŸ‘ 3 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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Linking neural manifolds to circuit structure in recurrent networks Dimensionality reduction methods are widely used in neuroscience to investigate two complementary aspects of neural activity: the distribution of sing…

Excited to share our new paper to be published in Neuron!

With Valentin Schmutz @bio-emergent.bsky.social and Wulfram Gerstner @gerstnerlab.bsky.social, we explore how circuit structure in RNNs shapes network computation and single-neuron responses.
www.sciencedirect.com/science/arti...

06.03.2026 17:11 πŸ‘ 37 πŸ” 11 πŸ’¬ 1 πŸ“Œ 1

Once you get past the first 5 minutes of me bumbling around clearly in need of media training, we settle into a nice groove talking about fitting mechanistic models, ML/AI for neuroscience, underconstrainedness vs. degeneracy, and its potential benefits for biology (plus some good chuckles).

03.03.2026 12:39 πŸ‘ 47 πŸ” 8 πŸ’¬ 2 πŸ“Œ 0
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fMRI connectivity is dominated by recurring high-amplitude BOLD events (CAPs, QPPs)
But what originates these events? Many think neuromodulation is the culprit. Our new work offers a simpler take: cortico-cortical dynamics alone can generate CAP-like events! doi.org/10.1371/journal.pcbi.1013995
🧡1/n

05.03.2026 13:39 πŸ‘ 37 πŸ” 17 πŸ’¬ 1 πŸ“Œ 0

Spatial organization of AQP4 channels in the human brain: links with perfusion, edema, and disease vulnerability https://www.biorxiv.org/content/10.64898/2026.02.18.706679v1

20.02.2026 14:17 πŸ‘ 1 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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🚨Do we need a large, expensive MRI scanner to map whole-brain networks in the mouse? Not necessarily!

In our new preprint ▢️ tinyurl.com/3a2h4r9f
we show that transcranial functional ultrasound (fUSI) can map connectome-scale networks with striking agreement to fMRI
πŸ§΅πŸ‘‡

17.02.2026 12:25 πŸ‘ 39 πŸ” 16 πŸ’¬ 1 πŸ“Œ 1
We're hiring! This is a unique opportunity to translate our understanding of neural computation - from circuit-level mechanisms to computational principles -  into the human brain, through the establishment of cutting-edge human neural recording capabilities with collaborators in London and abroad.

We're hiring! This is a unique opportunity to translate our understanding of neural computation - from circuit-level mechanisms to computational principles - into the human brain, through the establishment of cutting-edge human neural recording capabilities with collaborators in London and abroad.

We’re hiring a Group Leader!

Join us to lead a transformative initiative in human systems neuroscience.

Find out more and apply ‡️

www.sainsburywellcome.org/content/curr...

13.02.2026 13:41 πŸ‘ 31 πŸ” 25 πŸ’¬ 1 πŸ“Œ 4
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Inter-individual variability of neurotransmitter receptor and transporter density in the human brain | doi.org/10.1007/s004...

How do neuroreceptor distributions vary across people?

13.02.2026 15:14 πŸ‘ 34 πŸ” 14 πŸ’¬ 1 πŸ“Œ 0
Left:  Pathways involved in brain energy metabolism. Energy metabolism refers to processes involved in energy production from nutrient molecules. Glucose is the main energy source in the brain under normal physiological conditions. Glucose entering brain cells can be utilized in three parallel pathways. It can be processed through glycolysis to produce 2 ATP and 2 pyruvate molecules (blue). Lactate dehydrogenases catalyze the interconversion of lactate and pyruvate (purple). Pyruvate is transported into mitochondria, where it enters the TCA cycle to generate high-energy electron carriers NADH and FADH2 (green), driving the complete oxidation of glucose through the mitochondrial electron transport chain (red). Glucose entering the brain can also enter the PPP. PPP is an anabolic pathway that uses glucose to produce 5-carbon sugars and NADPH, an essential co-factor used in nucleotide and lipid biosynthesis (yellow). Glucose can also be stored in the form of glycogen via glycogen synthase, a process mainly active in astrocytes. Right: Energy pathway maps. Colors show z-scored mean expression values across all genes in each pathway. ppp, pentose phosphate pathway; tca, tricarboxylic acid cycle; oxphos, oxidative phosphorylation; lactate, lactate metabolism and transport.

Left: Pathways involved in brain energy metabolism. Energy metabolism refers to processes involved in energy production from nutrient molecules. Glucose is the main energy source in the brain under normal physiological conditions. Glucose entering brain cells can be utilized in three parallel pathways. It can be processed through glycolysis to produce 2 ATP and 2 pyruvate molecules (blue). Lactate dehydrogenases catalyze the interconversion of lactate and pyruvate (purple). Pyruvate is transported into mitochondria, where it enters the TCA cycle to generate high-energy electron carriers NADH and FADH2 (green), driving the complete oxidation of glucose through the mitochondrial electron transport chain (red). Glucose entering the brain can also enter the PPP. PPP is an anabolic pathway that uses glucose to produce 5-carbon sugars and NADPH, an essential co-factor used in nucleotide and lipid biosynthesis (yellow). Glucose can also be stored in the form of glycogen via glycogen synthase, a process mainly active in astrocytes. Right: Energy pathway maps. Colors show z-scored mean expression values across all genes in each pathway. ppp, pentose phosphate pathway; tca, tricarboxylic acid cycle; oxphos, oxidative phosphorylation; lactate, lactate metabolism and transport.

How are energy #metabolism pathways distributed across the #cortex? @alaindagher.bsky.social &co map five pathways in the human #brain, linking metabolic organization with brain structural & functional properties, as well as developmental dynamics @plosbiology.org πŸ§ͺ plos.io/4c1JVp8

02.02.2026 13:55 πŸ‘ 18 πŸ” 10 πŸ’¬ 0 πŸ“Œ 1
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Convergent transcriptomic and connectomic controllers of information integration and its anaesthetic breakdown across mammalian brains - Nature Human Behaviour Luppi et al. identify transcriptomic and connectomic controllers of information integration and its breakdown induced by anaesthesia in humans, macaques, marmosets and mice.

Luppi et al. identify transcriptomic and connectomic controllers of information integration and its breakdown induced by anaesthesia across species

29.01.2026 14:55 πŸ‘ 5 πŸ” 5 πŸ’¬ 0 πŸ“Œ 0
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netneurotools: a trainee-oriented approach to network neuroscience | doi.org/10.1101/2025...

Our lab’s internal toolkit for accomplishing everyday tasks in brain imaging ‡️

18.12.2025 14:58 πŸ‘ 75 πŸ” 36 πŸ’¬ 1 πŸ“Œ 3
BOLD signal changes can oppose oxygen metabolism across the human cortex, Nature Neuroscience

BOLD signal changes can oppose oxygen metabolism across the human cortex, Nature Neuroscience

fMRI signals β€œup,” but neural metabolism might be going β€œdown.”

In our @natneuro.nature.com paper, we demonstrate that about 40% of voxels with robust BOLD responses exhibit opposite oxygen metabolism, revealing two distinct hemodynamic modes.

rdcu.be/eUPO8
funds @erc.europa.eu
#neuroskyence 🧡:

16.12.2025 15:43 πŸ‘ 176 πŸ” 80 πŸ’¬ 4 πŸ“Œ 8
The Government of Canada introduces new programs for international researchers - Canada.ca

It's happening! Canada launched two programs to recruit international researchers.

Canada Impact+ Research Chairs (1 million/yr for 8 yrs +)
Canada Impact+ Emerging Leaders.

I will do my best to facilitate the process for those interested. Hit me up.

www.canada.ca/en/impact-pl...

09.12.2025 18:06 πŸ‘ 199 πŸ” 115 πŸ’¬ 4 πŸ“Œ 20
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Cognitive cartography of mammalian brains using meta-analysis of AI experts The complexity of the brain is increasingly mirrored by the complexity of the neuroscientific literature, yet no individual mind can fully grasp the diversity of scales, methodologies and model organi...

🧠 Excited to share our latest preprint: Automated Brain Mapping with AI Experts!πŸ€–

www.biorxiv.org/content/10.6...

Ever wanted to summarise the cognitive/systems neuroscience literature beyond MRI and PET? Ever wished we could do the same for macaque πŸ’ and mouse 🐭 ? Read on! πŸ§΅πŸ‘‡

08.12.2025 11:11 πŸ‘ 11 πŸ” 8 πŸ’¬ 1 πŸ“Œ 1
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The Transmitter’s Rising Stars of Neuroscience 2025 We recognize the outstanding achievements of 25 neuroscientists who stand to shape the field for years to come.

Truly honored to be recognized among @thetransmitter.bsky.social's Rising Stars of Neuroscience for 2025 next to trailblazers like @valeriejsydnor.bsky.social, @lindenmp.bsky.social, @elimuller.bsky.social & more!🌟🧠Check out everyone's full contributions at www.thetransmitter.org/early-career...

17.11.2025 10:34 πŸ‘ 17 πŸ” 3 πŸ’¬ 2 πŸ“Œ 1

I am recruiting graduate students for the experimental side of my lab @mcgill.ca for admission in Fall 2026!
Get in touch if you're interested in how brain circuits implement distributed computation, including dopamine-based distributed RL and probabilistic representations.

19.11.2025 18:04 πŸ‘ 37 πŸ” 30 πŸ’¬ 1 πŸ“Œ 0
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Jaxley: differentiable simulation enables large-scale training of detailed biophysical models of neural dynamics - Nature Methods Jaxley is a versatile platform for biophysical modeling in neuroscience. It allows efficiently simulating large-scale biophysical models on CPUs, GPUs and TPUs. Model parameters can be optimized with ...

I am super happy to share that our project on training biophysical models with Jaxley is now published in Nature Methods: www.nature.com/articles/s41...

13.11.2025 12:38 πŸ‘ 78 πŸ” 16 πŸ’¬ 1 πŸ“Œ 3
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Preprint -
Excited to present WHOLISTIC, which extends the concept of whole-brain functional imaging to the entire body. Pioneering work by incredibly talented Virginia Ruetten @vmsruetten.bsky.social, this platform reveals whole-organism cellular dynamics in vivo.
www.biorxiv.org/content/10.1...

08.09.2025 16:23 πŸ‘ 194 πŸ” 70 πŸ’¬ 3 πŸ“Œ 6

Our recent work on spin tests is now published in Imaging NeuroscienceπŸŽ‰

As always, the code to reproduce our results and figures is available on github: github.com/netneurolab/...

10.09.2025 16:26 πŸ‘ 15 πŸ” 5 πŸ’¬ 0 πŸ“Œ 0
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The effect of spherical projections on spin tests for brain maps | doi.org/10.1162/IMAG...

Spin tests are the de facto null model for map-to-map comparisons in brain imaging. Why don't they perfectly control false positives? @vincebaz.bsky.social explores ‡️

10.09.2025 13:06 πŸ‘ 25 πŸ” 14 πŸ’¬ 1 πŸ“Œ 1
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Integrating and interpreting brain maps | doi.org/10.1016/j.ti...

Imaging and recording technologies make it possible to map multiple biological features of the brain. How can these features be conceptually integrated into a coherent understanding of brain structure and function? ‡️

04.08.2025 14:26 πŸ‘ 74 πŸ” 42 πŸ’¬ 1 πŸ“Œ 0
Normative blood perfusion map on lateral and medial views of the inflated and 2D flat cortical surfaces (fsLR). Borders and areal names of the multi-modal Glasser parcellation are overlaid on the flat surface. The figure highlights the non-uniform distribution of perfusion scores across the cortex, with areas that have sharp gradient compared to their underlying perfusion score levels (e.g., LIPv and MT/MST).

Normative blood perfusion map on lateral and medial views of the inflated and 2D flat cortical surfaces (fsLR). Borders and areal names of the multi-modal Glasser parcellation are overlaid on the flat surface. The figure highlights the non-uniform distribution of perfusion scores across the cortex, with areas that have sharp gradient compared to their underlying perfusion score levels (e.g., LIPv and MT/MST).

How does cerebral #BloodPerfusion map onto micro-, meso- & macro-scale brain structure? @asafarahani.bsky.social @misicbata.bsky.social &co characterize blood perfusion in the #HumanBrain, revealing how it changes with age & in #NeurodegenerativeDisease @plosbiology.org πŸ§ͺ plos.io/46AEURS

31.07.2025 17:09 πŸ‘ 9 πŸ” 7 πŸ’¬ 0 πŸ“Œ 0
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Genetic foundations of interindividual neurophysiological variability Individual brain activity profiles are shaped by lifelong genetic influences.

🧬🧠 Our latest study shows that individual brain dynamics are partly written in our genes. We found that heritable neurophysiological traits align with adult cortical gene expression and psychological function.

www.science.org/doi/10.1126/...

@theneuro.bsky.social @mcgill.ca

23.07.2025 22:01 πŸ‘ 54 πŸ” 13 πŸ’¬ 2 πŸ“Œ 0
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New paper in Imaging Neuroscience by Nikhil Bhagwat, Yu-Fang Yang, et al:

Challenging the status quo: A guide to open and reproducible neuroimaging for early career researchers

doi.org/10.1162/IMAG...

28.06.2025 05:06 πŸ‘ 23 πŸ” 11 πŸ’¬ 0 πŸ“Œ 1
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Benchmarking methods for mapping functional connectivity in the brain - Nature Methods In this Analysis, Liu et al. benchmark more than 200 pairwise statistics for functional brain connectivity in tasks such as hub mapping, distance relationships, structure–function coupling and behavio...

An Analysis of 200 pairwise statistics for functional brain connectivity in tasks such as hub mapping, distance relationships, structure-function coupling and behavior prediction highlights their effectiveness for neurophysiological applications.

www.nature.com/articles/s41...

06.06.2025 15:51 πŸ‘ 52 πŸ” 31 πŸ’¬ 0 πŸ“Œ 0
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New: Energy use shapes brain organization and development. We use gene expression maps from the @alleninstitute.bsky.social Human Brain Atlas to map the main energy metabolism pathways in the brain. Led by @moohebatpe.bsky.social @misicbata.bsky.social @goliashf.bsky.social and Justine Hansen 🧡

18.03.2025 21:48 πŸ‘ 45 πŸ” 20 πŸ’¬ 2 πŸ“Œ 1