Nicolas Gravel
@nicog.bsky.social
postdoctoral researcher at UNICOG, NeuroSpin neuroimaging and visual neuroscience https://nicogravel.github.io/
Reposted by Nicolas Gravel
Interested in cortical wave dynamics? Check out our review on the physics, physiology, and psychology of cortical waves led by J Cruddas with @jchrispang.bsky.social, out now in
@cp-neuron.bsky.social:
www.sciencedirect.com/science/arti...
@cp-neuron.bsky.social:
www.sciencedirect.com/science/arti...
February 9, 2026 at 11:56 PM
Interested in cortical wave dynamics? Check out our review on the physics, physiology, and psychology of cortical waves led by J Cruddas with @jchrispang.bsky.social, out now in
@cp-neuron.bsky.social:
www.sciencedirect.com/science/arti...
@cp-neuron.bsky.social:
www.sciencedirect.com/science/arti...
Reposted by Nicolas Gravel
DEADLINE REMINDER!
Abstract submissions for #ASSC29 in Santiago close on February 12, 2026 (11:59 PM PT).
Don’t miss it!
theassc.org/assc-29/subm...
@theassc.bsky.social
Abstract submissions for #ASSC29 in Santiago close on February 12, 2026 (11:59 PM PT).
Don’t miss it!
theassc.org/assc-29/subm...
@theassc.bsky.social
February 5, 2026 at 11:16 PM
DEADLINE REMINDER!
Abstract submissions for #ASSC29 in Santiago close on February 12, 2026 (11:59 PM PT).
Don’t miss it!
theassc.org/assc-29/subm...
@theassc.bsky.social
Abstract submissions for #ASSC29 in Santiago close on February 12, 2026 (11:59 PM PT).
Don’t miss it!
theassc.org/assc-29/subm...
@theassc.bsky.social
Reposted by Nicolas Gravel
One of my favorite facts: neurons and skin cells are 'cousins'.
Intelligence is a phenomenon that lives at boundaries. The semipermeable cell membrane is where the ball got rolling.
I wrote an essay riffing on this idea.
yohanjohn.com/axispraxis/f...
Intelligence is a phenomenon that lives at boundaries. The semipermeable cell membrane is where the ball got rolling.
I wrote an essay riffing on this idea.
yohanjohn.com/axispraxis/f...
November 4, 2025 at 11:33 AM
One of my favorite facts: neurons and skin cells are 'cousins'.
Intelligence is a phenomenon that lives at boundaries. The semipermeable cell membrane is where the ball got rolling.
I wrote an essay riffing on this idea.
yohanjohn.com/axispraxis/f...
Intelligence is a phenomenon that lives at boundaries. The semipermeable cell membrane is where the ball got rolling.
I wrote an essay riffing on this idea.
yohanjohn.com/axispraxis/f...
Reposted by Nicolas Gravel
main goal for this year: find a new job! 🙂
looking for a role with fun & complex technical challenges & within a great community. my main expertise is in signal processing/EEG/MEG, but topic-wise I am quite flexible.
science/industry both great! starting mid-year. nschawor.github.io/cv
looking for a role with fun & complex technical challenges & within a great community. my main expertise is in signal processing/EEG/MEG, but topic-wise I am quite flexible.
science/industry both great! starting mid-year. nschawor.github.io/cv
January 16, 2026 at 10:14 AM
main goal for this year: find a new job! 🙂
looking for a role with fun & complex technical challenges & within a great community. my main expertise is in signal processing/EEG/MEG, but topic-wise I am quite flexible.
science/industry both great! starting mid-year. nschawor.github.io/cv
looking for a role with fun & complex technical challenges & within a great community. my main expertise is in signal processing/EEG/MEG, but topic-wise I am quite flexible.
science/industry both great! starting mid-year. nschawor.github.io/cv
Reposted by Nicolas Gravel
Postdoc position in Paris: come help develop new generation human brain computer interfaces ⚡🧠💻
Interested? Contact me if you have experience with machine learning (e.g. simulation-based inference, RL, generative/diffusion models) or dynamical systems.
See below for + details and retweet 🙏
Interested? Contact me if you have experience with machine learning (e.g. simulation-based inference, RL, generative/diffusion models) or dynamical systems.
See below for + details and retweet 🙏
January 27, 2026 at 10:12 PM
Postdoc position in Paris: come help develop new generation human brain computer interfaces ⚡🧠💻
Interested? Contact me if you have experience with machine learning (e.g. simulation-based inference, RL, generative/diffusion models) or dynamical systems.
See below for + details and retweet 🙏
Interested? Contact me if you have experience with machine learning (e.g. simulation-based inference, RL, generative/diffusion models) or dynamical systems.
See below for + details and retweet 🙏
Reposted by Nicolas Gravel
Paper on developing concepts for neuroscience now published open access:
doi.org/10.1111/ejn....
We argue that the success and failure of concepts fundamentally depends on epistemic goals.
#cogsky #neuroskyence #cognitiveneuroscience #philsky #philsci #philosophysky #cogsci
doi.org/10.1111/ejn....
We argue that the success and failure of concepts fundamentally depends on epistemic goals.
#cogsky #neuroskyence #cognitiveneuroscience #philsky #philsci #philosophysky #cogsci
Developing Concepts for Neuroscience: A Philosophical Toolkit
Whether and how concepts should be developed depends on the phenomena that neuroscientists aim to describe, classify, and explain. These epistemic goals shape when introducing novel terms like “defau...
doi.org
January 21, 2026 at 3:49 PM
Paper on developing concepts for neuroscience now published open access:
doi.org/10.1111/ejn....
We argue that the success and failure of concepts fundamentally depends on epistemic goals.
#cogsky #neuroskyence #cognitiveneuroscience #philsky #philsci #philosophysky #cogsci
doi.org/10.1111/ejn....
We argue that the success and failure of concepts fundamentally depends on epistemic goals.
#cogsky #neuroskyence #cognitiveneuroscience #philsky #philsci #philosophysky #cogsci
Reposted by Nicolas Gravel
Can we ever truly understand animal languages—and even communicate with other species? Recent advances in artificial intelligence, especially large language models, have reignited the belief that this dream may soon be within reach. www.cell.com/current-biol... @odedrechavi.bsky.social
January 17, 2026 at 11:13 PM
Can we ever truly understand animal languages—and even communicate with other species? Recent advances in artificial intelligence, especially large language models, have reignited the belief that this dream may soon be within reach. www.cell.com/current-biol... @odedrechavi.bsky.social
Reposted by Nicolas Gravel
Are connectome-based network mapping methods and the >200 papers that have used it invalid?
New paper out in
@NatureNeuro
says YES. nature.com/articles/s41...
I have concerns about this new paper's methods and conclusions, but am biased. What do others think?
New paper out in
@NatureNeuro
says YES. nature.com/articles/s41...
I have concerns about this new paper's methods and conclusions, but am biased. What do others think?
Investigating the methodological foundation of lesion network mapping - Nature Neuroscience
The lesion network mapping method links diverse brain lesions to similar functional brain networks, reflecting general brain organization rather than disorder-specific circuits.
nature.com
January 18, 2026 at 1:59 AM
Are connectome-based network mapping methods and the >200 papers that have used it invalid?
New paper out in
@NatureNeuro
says YES. nature.com/articles/s41...
I have concerns about this new paper's methods and conclusions, but am biased. What do others think?
New paper out in
@NatureNeuro
says YES. nature.com/articles/s41...
I have concerns about this new paper's methods and conclusions, but am biased. What do others think?
Reposted by Nicolas Gravel
A hitchhiker’s guide to information theoretical measures in psychology
by @nielsvs.bsky.social with me and Yves Rosseel
authors.elsevier.com/c/1mOwr53na-...
osf.io/preprints/ps...
by @nielsvs.bsky.social with me and Yves Rosseel
authors.elsevier.com/c/1mOwr53na-...
osf.io/preprints/ps...
January 7, 2026 at 9:02 AM
A hitchhiker’s guide to information theoretical measures in psychology
by @nielsvs.bsky.social with me and Yves Rosseel
authors.elsevier.com/c/1mOwr53na-...
osf.io/preprints/ps...
by @nielsvs.bsky.social with me and Yves Rosseel
authors.elsevier.com/c/1mOwr53na-...
osf.io/preprints/ps...
Reposted by Nicolas Gravel
Brainhack Marseille is a fun, inclusive, and productive event. Register and submit a projet !
brainhack-marseille.github.io
brainhack-marseille.github.io
January 7, 2026 at 9:08 AM
Brainhack Marseille is a fun, inclusive, and productive event. Register and submit a projet !
brainhack-marseille.github.io
brainhack-marseille.github.io
Reposted by Nicolas Gravel
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
November 13, 2025 at 10:17 AM
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
Reposted by Nicolas Gravel
Our new preprint on the FOODEEG open dataset is out! EEG recordings and behavioural responses on food cognition tasks for 117 participants will be made publicly available 🧠 @danfeuerriegel.bsky.social @tgro.bsky.social
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
FOODEEG: An open dataset of human electroencephalographic and behavioural responses to food images
Investigating the neurocognitive mechanisms underlying food choices has the potential to advance our understanding of eating behaviour and inform health-targeted interventions and policy. Large, publi...
www.biorxiv.org
November 10, 2025 at 11:34 PM
Our new preprint on the FOODEEG open dataset is out! EEG recordings and behavioural responses on food cognition tasks for 117 participants will be made publicly available 🧠 @danfeuerriegel.bsky.social @tgro.bsky.social
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Nicolas Gravel
On biological and artificial consciousness: A case for biological computationalism
doi.org/10.1016/j.ne...
#neuroscience
doi.org/10.1016/j.ne...
#neuroscience
Redirecting
doi.org
December 31, 2025 at 2:11 PM
On biological and artificial consciousness: A case for biological computationalism
doi.org/10.1016/j.ne...
#neuroscience
doi.org/10.1016/j.ne...
#neuroscience
Reposted by Nicolas Gravel
Which came first: the tomato or the potato?
That may not be the classic conundrum, but it’s the basis for this piece about the evolution of two of our most important crops—a story that also gave rise to our favorite headline of the year. https://scim.ag/4sh83d6
That may not be the classic conundrum, but it’s the basis for this piece about the evolution of two of our most important crops—a story that also gave rise to our favorite headline of the year. https://scim.ag/4sh83d6
Thank ketchup for your French fries
Interbreeding with tomatoes 9 million years ago gave potatoes the genes to develop tubers
scim.ag
December 31, 2025 at 2:30 PM
Which came first: the tomato or the potato?
That may not be the classic conundrum, but it’s the basis for this piece about the evolution of two of our most important crops—a story that also gave rise to our favorite headline of the year. https://scim.ag/4sh83d6
That may not be the classic conundrum, but it’s the basis for this piece about the evolution of two of our most important crops—a story that also gave rise to our favorite headline of the year. https://scim.ag/4sh83d6
Reposted by Nicolas Gravel
Reposted by Nicolas Gravel
December 31, 2025 at 7:32 AM
Reposted by Nicolas Gravel
Hello vision scientists & linguists! The Journal of Vision is accepting submissions for a special issue on “The Vision-Language Interface.” The deadline has been extended until June 30! jov.arvojournals.org/ss/visionlan... #neuroskyence #VisionScience #PsychSciSky
December 29, 2025 at 4:27 PM
Hello vision scientists & linguists! The Journal of Vision is accepting submissions for a special issue on “The Vision-Language Interface.” The deadline has been extended until June 30! jov.arvojournals.org/ss/visionlan... #neuroskyence #VisionScience #PsychSciSky
Reposted by Nicolas Gravel
A new comparative study of seven lizard species, including chameleons and bearded dragons, finds an ancient sleep rhythm conserved over millennia.
By Lauren Schenkman
www.thetransmitter.org/sleep/snoozi...
By Lauren Schenkman
www.thetransmitter.org/sleep/snoozi...
December 29, 2025 at 6:34 PM
A new comparative study of seven lizard species, including chameleons and bearded dragons, finds an ancient sleep rhythm conserved over millennia.
By Lauren Schenkman
www.thetransmitter.org/sleep/snoozi...
By Lauren Schenkman
www.thetransmitter.org/sleep/snoozi...
Reposted by Nicolas Gravel
Sequences are everywhere! In every brain region. And are written in stone.
Invariant Activity Sequences Across the Mouse Brain.
Out today, by Célian Bimbard, with @kenneth-harris.bsky.social.
Based on data by Célian and by @intlbrainlab.bsky.social.
www.biorxiv.org/content/10.6...
Invariant Activity Sequences Across the Mouse Brain.
Out today, by Célian Bimbard, with @kenneth-harris.bsky.social.
Based on data by Célian and by @intlbrainlab.bsky.social.
www.biorxiv.org/content/10.6...
December 22, 2025 at 11:59 AM
Sequences are everywhere! In every brain region. And are written in stone.
Invariant Activity Sequences Across the Mouse Brain.
Out today, by Célian Bimbard, with @kenneth-harris.bsky.social.
Based on data by Célian and by @intlbrainlab.bsky.social.
www.biorxiv.org/content/10.6...
Invariant Activity Sequences Across the Mouse Brain.
Out today, by Célian Bimbard, with @kenneth-harris.bsky.social.
Based on data by Célian and by @intlbrainlab.bsky.social.
www.biorxiv.org/content/10.6...
Reposted by Nicolas Gravel
Dimensionality reduction may be the wrong approach to understanding neural representations. Our new paper shows that across human visual cortex, dimensionality is unbounded and scales with dataset size—we show this across nearly four orders of magnitude. journals.plos.org/ploscompbiol...
December 11, 2025 at 3:32 PM
Dimensionality reduction may be the wrong approach to understanding neural representations. Our new paper shows that across human visual cortex, dimensionality is unbounded and scales with dataset size—we show this across nearly four orders of magnitude. journals.plos.org/ploscompbiol...
Reposted by Nicolas Gravel
The BOLD signal may not be what we thought it was.
BOLD signal changes can oppose oxygen metabolism across the human cortex
www.nature.com/articles/s41...
#neuroscience
BOLD signal changes can oppose oxygen metabolism across the human cortex
www.nature.com/articles/s41...
#neuroscience
BOLD signal changes can oppose oxygen metabolism across the human cortex - Nature Neuroscience
Using quantitative brain imaging, the authors show opposite fMRI BOLD signal to metabolic activity due to variable oxygen extraction across the human cortex. This questions the canonical interpretatio...
www.nature.com
December 20, 2025 at 3:41 PM
The BOLD signal may not be what we thought it was.
BOLD signal changes can oppose oxygen metabolism across the human cortex
www.nature.com/articles/s41...
#neuroscience
BOLD signal changes can oppose oxygen metabolism across the human cortex
www.nature.com/articles/s41...
#neuroscience
Reposted by Nicolas Gravel
🧠New preprint!
What if cortical geometry alone already encodes much of white-matter organization?
We introduce a subject-specific, reversible cortical folding model that unfolds and refolds the brain from a single T1w MRI; no diffusion, no ML.
www.biorxiv.org/content/10.6...
What if cortical geometry alone already encodes much of white-matter organization?
We introduce a subject-specific, reversible cortical folding model that unfolds and refolds the brain from a single T1w MRI; no diffusion, no ML.
www.biorxiv.org/content/10.6...
December 17, 2025 at 1:48 AM
🧠New preprint!
What if cortical geometry alone already encodes much of white-matter organization?
We introduce a subject-specific, reversible cortical folding model that unfolds and refolds the brain from a single T1w MRI; no diffusion, no ML.
www.biorxiv.org/content/10.6...
What if cortical geometry alone already encodes much of white-matter organization?
We introduce a subject-specific, reversible cortical folding model that unfolds and refolds the brain from a single T1w MRI; no diffusion, no ML.
www.biorxiv.org/content/10.6...
Reposted by Nicolas Gravel
fMRI signals “up,” but neural metabolism might be going “down.”
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 🧵:
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 🧵:
December 16, 2025 at 3:43 PM
fMRI signals “up,” but neural metabolism might be going “down.”
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 🧵:
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 🧵:
Reposted by Nicolas Gravel
J'ai hâte gradients! gradients-workshop.github.io 🧠 @ohbmofficial.bsky.social @ohbmtrainees.bsky.social
Gradients 2026
A workshop on gradients in brain organzation in June 2026
gradients-workshop.github.io
December 11, 2025 at 11:57 PM
J'ai hâte gradients! gradients-workshop.github.io 🧠 @ohbmofficial.bsky.social @ohbmtrainees.bsky.social
on the edge: from interaction terms to time varying behaviour
Just provisionally accepted -- preprint updated | The dual interpretation of edge time series: Time-varying connectivity versus statistical interaction | www.biorxiv.org/content/10.1...
The dual interpretation of edge time series: Time-varying connectivity versus statistical interaction
Functional connectivity (FC) is frequently operationalized as a correlation. Many studies have examined changes in correlation networks across time, claiming to link time-varying fluctuations to ongoi...
www.biorxiv.org
December 12, 2025 at 9:14 PM
on the edge: from interaction terms to time varying behaviour