Janis Keck
@keckjanis.bsky.social
phd student in computational neuroscience, interested in geometric principles of biological & artificial learning || looking for postdoc positions
Reposted by Janis Keck
Three German universities offering post-docs for researchers "who cannot conduct or continue their work in the USA appropriately because of actual political pressure. "
www.uni-konstanz.de/zukunftskoll...
www.uni-konstanz.de/zukunftskoll...
Early Career Rescue Fellowship
www.uni-konstanz.de
November 11, 2025 at 7:10 PM
Three German universities offering post-docs for researchers "who cannot conduct or continue their work in the USA appropriately because of actual political pressure. "
www.uni-konstanz.de/zukunftskoll...
www.uni-konstanz.de/zukunftskoll...
Reposted by Janis Keck
Foraging in conceptual spaces: hippocampal oscillatory dynamics underlying searching for concepts in memory
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Foraging in conceptual spaces: hippocampal oscillatory dynamics underlying searching for concepts in memory
How does the brain access stored knowledge? It has been proposed that conceptual search engages neurocognitive processes similar to foraging in physical space. We tested this idea using intracranial E...
www.biorxiv.org
October 13, 2025 at 7:57 PM
Foraging in conceptual spaces: hippocampal oscillatory dynamics underlying searching for concepts in memory
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Janis Keck
New preprint from the lab and great work by Fei Wang. We show how subiculum trace vector cells can be modeled consistent with known effects in CA1. Traces are driven by a mismatch learning rule to keep associative memories in line with experience.
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Dynamic updating of cognitive maps via traces of experience in the subiculum
In the classical view of hippocampal function, the subiculum is assigned the role as the output layer. In spatial paradigms, some subiculum neurons manifest as so-called boundary vector cells (BVCs), ...
www.biorxiv.org
October 3, 2025 at 7:01 AM
New preprint from the lab and great work by Fei Wang. We show how subiculum trace vector cells can be modeled consistent with known effects in CA1. Traces are driven by a mismatch learning rule to keep associative memories in line with experience.
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Janis Keck
Super proud of this collaboration with rockstar Ryan Raut - born out of playing in the sandbox in our last year of grad school! Multi-scale brain activity can be predicted from a simple measure of arousal like pupil diameter. Out with linear causality, in with dynamic systems to explain neurobiology
Arousal as a universal embedding for spatiotemporal brain dynamics - Nature
Reframing of arousal as a latent dynamical system can reconstruct multidimensional measurements of large-scale spatiotemporal brain dynamics on the timescale of seconds in mice.
www.nature.com
September 24, 2025 at 9:52 PM
Super proud of this collaboration with rockstar Ryan Raut - born out of playing in the sandbox in our last year of grad school! Multi-scale brain activity can be predicted from a simple measure of arousal like pupil diameter. Out with linear causality, in with dynamic systems to explain neurobiology
Reposted by Janis Keck
1/
🚨 New preprint! 🚨
Excited and proud (& a little nervous 😅) to share our latest work on the importance of #theta-timescale spiking during #locomotion in #learning. If you care about how organisms learn, buckle up. 🧵👇
📄 www.biorxiv.org/content/10.1...
💻 code + data 🔗 below 🤩
#neuroskyence
🚨 New preprint! 🚨
Excited and proud (& a little nervous 😅) to share our latest work on the importance of #theta-timescale spiking during #locomotion in #learning. If you care about how organisms learn, buckle up. 🧵👇
📄 www.biorxiv.org/content/10.1...
💻 code + data 🔗 below 🤩
#neuroskyence
September 17, 2025 at 7:33 PM
1/
🚨 New preprint! 🚨
Excited and proud (& a little nervous 😅) to share our latest work on the importance of #theta-timescale spiking during #locomotion in #learning. If you care about how organisms learn, buckle up. 🧵👇
📄 www.biorxiv.org/content/10.1...
💻 code + data 🔗 below 🤩
#neuroskyence
🚨 New preprint! 🚨
Excited and proud (& a little nervous 😅) to share our latest work on the importance of #theta-timescale spiking during #locomotion in #learning. If you care about how organisms learn, buckle up. 🧵👇
📄 www.biorxiv.org/content/10.1...
💻 code + data 🔗 below 🤩
#neuroskyence
Reposted by Janis Keck
Can a single cell learn? Even without a brain, some microbes show simple forms of cognition. Can this basal cognition be engineered? Check our new paper with @jordiplam.bsky.social on the minimal synthetic circuits & their cognitive limits. @drmichaellevin.bsky.social www.biorxiv.org/content/10.1...
September 10, 2025 at 11:48 AM
Can a single cell learn? Even without a brain, some microbes show simple forms of cognition. Can this basal cognition be engineered? Check our new paper with @jordiplam.bsky.social on the minimal synthetic circuits & their cognitive limits. @drmichaellevin.bsky.social www.biorxiv.org/content/10.1...
Andrej is a great scientist and teacher, highly recommended!
Dear colleagues, we have an open PhD position in computational neuroscience - spatial memory models and intracranial recordings - fully funded. Re-advertised, candidates are ideally available in the near future. A collab. with 4 labs. Apply here: tinyurl.com/yc84ctap
PhD position or a Doctoral Candidate in computational neuroscience. (m/f/d) | Karriereportal Max-Planck-Institut für Kognitions- und Neurowissenschaften
PhD position or a Doctoral Candidate in computational neuroscience. (m/f/d) | Karriereportal Max-Planck-Institut für Kognitions- und Neurowissenschaften
tinyurl.com
September 8, 2025 at 1:28 PM
Andrej is a great scientist and teacher, highly recommended!
Reposted by Janis Keck
Congratulations to
@reznikdan.bsky.social
and
@sofievalk.bsky.social
for this tremendous achievement!
@reznikdan.bsky.social
and
@sofievalk.bsky.social
for this tremendous achievement!
Huge congratulations 🥳 to
@sofievalk.bsky.social
&
@reznikdan.bsky.social
for receiving ERC Starting Grants 2025! We're proud of you!
Learn more about their projects: www.cbs.mpg.de/2397348/2025...
@sofievalk.bsky.social
&
@reznikdan.bsky.social
for receiving ERC Starting Grants 2025! We're proud of you!
Learn more about their projects: www.cbs.mpg.de/2397348/2025...
Sofie Valk and Daniel Reznik receive ERC Starting Grants
Sofie Valk and Daniel Reznik receive ERC Starting Grants
www.cbs.mpg.de
September 5, 2025 at 2:59 PM
Congratulations to
@reznikdan.bsky.social
and
@sofievalk.bsky.social
for this tremendous achievement!
@reznikdan.bsky.social
and
@sofievalk.bsky.social
for this tremendous achievement!
Reposted by Janis Keck
In sum, we believe this is the first direct evidence in humans of systems consolidation theory for specific memories: the hypothesized transformation of memories from hippocampus to cortex over sleep.
Take look for yourself on @biorxivpreprint.bsky.social t.co/xFEDpqVXfE 6/6
Take look for yourself on @biorxivpreprint.bsky.social t.co/xFEDpqVXfE 6/6
https://www.biorxiv.org/content/10.1101/2025.07.01.662486v3
t.co
August 28, 2025 at 7:39 PM
In sum, we believe this is the first direct evidence in humans of systems consolidation theory for specific memories: the hypothesized transformation of memories from hippocampus to cortex over sleep.
Take look for yourself on @biorxivpreprint.bsky.social t.co/xFEDpqVXfE 6/6
Take look for yourself on @biorxivpreprint.bsky.social t.co/xFEDpqVXfE 6/6
Reposted by Janis Keck
🚨We believe this is a major step forward in how we study hippocampus function in healthy humans.
Using novel behavioral tasks, fMRI, RL & RNN modeling, and transcranial ultrasound stimulation (TUS), we demonstrate the causal role of hippocampus in relational structure learning.
Using novel behavioral tasks, fMRI, RL & RNN modeling, and transcranial ultrasound stimulation (TUS), we demonstrate the causal role of hippocampus in relational structure learning.
August 28, 2025 at 2:00 PM
🚨We believe this is a major step forward in how we study hippocampus function in healthy humans.
Using novel behavioral tasks, fMRI, RL & RNN modeling, and transcranial ultrasound stimulation (TUS), we demonstrate the causal role of hippocampus in relational structure learning.
Using novel behavioral tasks, fMRI, RL & RNN modeling, and transcranial ultrasound stimulation (TUS), we demonstrate the causal role of hippocampus in relational structure learning.
Reposted by Janis Keck
Now out in @natneuro.nature.com
What happens to the brain’s body map when a body-part is removed?
Scanning patients before and up to 5 yrs after arm amputation, we discovered the brain’s body map is strikingly preserved despite amputation
www.nature.com/articles/s41593-025-02037-7
🧵1/18
What happens to the brain’s body map when a body-part is removed?
Scanning patients before and up to 5 yrs after arm amputation, we discovered the brain’s body map is strikingly preserved despite amputation
www.nature.com/articles/s41593-025-02037-7
🧵1/18
August 21, 2025 at 9:20 AM
Now out in @natneuro.nature.com
What happens to the brain’s body map when a body-part is removed?
Scanning patients before and up to 5 yrs after arm amputation, we discovered the brain’s body map is strikingly preserved despite amputation
www.nature.com/articles/s41593-025-02037-7
🧵1/18
What happens to the brain’s body map when a body-part is removed?
Scanning patients before and up to 5 yrs after arm amputation, we discovered the brain’s body map is strikingly preserved despite amputation
www.nature.com/articles/s41593-025-02037-7
🧵1/18
Reposted by Janis Keck
#CCN2025 was fantastic!! It was great to meet and catch up with many of you in Amsterdam – Feeling really inspired now by all the cool work I've seen over the past few days @cogcompneuro.bsky.social! Until next year!
August 15, 2025 at 4:29 PM
#CCN2025 was fantastic!! It was great to meet and catch up with many of you in Amsterdam – Feeling really inspired now by all the cool work I've seen over the past few days @cogcompneuro.bsky.social! Until next year!
Reposted by Janis Keck
Since July 21st, we have a good reason to celebrate the summa cum laude Defense of the newly minted Dr. Hettwer who received her PhD from @hhu.de under the supervision of Prof. Simon Eickhoff @sbe.bsky.social with strongest support of Dr. Sofie Valk! Congratulations Meike!!!🥂👏🏻🥁🎊
August 15, 2025 at 9:08 AM
Since July 21st, we have a good reason to celebrate the summa cum laude Defense of the newly minted Dr. Hettwer who received her PhD from @hhu.de under the supervision of Prof. Simon Eickhoff @sbe.bsky.social with strongest support of Dr. Sofie Valk! Congratulations Meike!!!🥂👏🏻🥁🎊
Reposted by Janis Keck
Appreciate @davidpoeppel.bsky.social's reminder to scientists of their role in this time, at #CCN2025 (the reminder may be even more pertinent to non-US colleagues who have a chance to prevent the some of the worst effects before they really arrive)
August 14, 2025 at 3:01 PM
Appreciate @davidpoeppel.bsky.social's reminder to scientists of their role in this time, at #CCN2025 (the reminder may be even more pertinent to non-US colleagues who have a chance to prevent the some of the worst effects before they really arrive)
Reposted by Janis Keck
I'll be presenting this work at #CCN2025 tomorrow (A173).
Come and say hi or message me if you'd like to meet up!
Come and say hi or message me if you'd like to meet up!
How does the structure of a neural circuit shape its function?
@neuralreckoning.bsky.social & I explore this in our new preprint:
doi.org/10.1101/2025...
🤖🧠🧪
🧵1/9
@neuralreckoning.bsky.social & I explore this in our new preprint:
doi.org/10.1101/2025...
🤖🧠🧪
🧵1/9
August 11, 2025 at 3:33 PM
I'll be presenting this work at #CCN2025 tomorrow (A173).
Come and say hi or message me if you'd like to meet up!
Come and say hi or message me if you'd like to meet up!
Reposted by Janis Keck
@fnkp.bsky.social using gen-AI to create awesome new experiment stimuli which nearly look alike visually, but depict completely different things. Fri, C135 (6/7)
August 10, 2025 at 2:34 PM
@fnkp.bsky.social using gen-AI to create awesome new experiment stimuli which nearly look alike visually, but depict completely different things. Fri, C135 (6/7)
Reposted by Janis Keck
We’re very happy to share 3 highlights of our Brain and AI team for #CCN2025 's week:
1. 🏆1st place for the Algonauts competition: paper, thtread and code below
2.🗣Keynote: Language in the Brain: 2025.ccneuro.org/k-and-t-lang...
3. 🚀Tutorial: Scale your decoding pipeline in the notebook
1. 🏆1st place for the Algonauts competition: paper, thtread and code below
2.🗣Keynote: Language in the Brain: 2025.ccneuro.org/k-and-t-lang...
3. 🚀Tutorial: Scale your decoding pipeline in the notebook
August 11, 2025 at 11:45 AM
We’re very happy to share 3 highlights of our Brain and AI team for #CCN2025 's week:
1. 🏆1st place for the Algonauts competition: paper, thtread and code below
2.🗣Keynote: Language in the Brain: 2025.ccneuro.org/k-and-t-lang...
3. 🚀Tutorial: Scale your decoding pipeline in the notebook
1. 🏆1st place for the Algonauts competition: paper, thtread and code below
2.🗣Keynote: Language in the Brain: 2025.ccneuro.org/k-and-t-lang...
3. 🚀Tutorial: Scale your decoding pipeline in the notebook
Excited for #CCN2025 where we will share our entry for the algonauts challenge. Join us on Wednesday 10:00 am in A1.03!
We did it! 🏆 We won Phase 1 and placed 2nd overall in the Algonauts 2025 Challenge. So proud of the crew
@keckjanis.bsky.social,Viktor Studenyak,Daniel Schad,Aleksandr Shpilevoi. Huge thanks to @andrejbicanski.bsky.social and @doellerlab.bsky.social for support. Report: arxiv.org/abs/2507.17958
@keckjanis.bsky.social,Viktor Studenyak,Daniel Schad,Aleksandr Shpilevoi. Huge thanks to @andrejbicanski.bsky.social and @doellerlab.bsky.social for support. Report: arxiv.org/abs/2507.17958
August 11, 2025 at 4:10 PM
Excited for #CCN2025 where we will share our entry for the algonauts challenge. Join us on Wednesday 10:00 am in A1.03!
Thrilled to have been part of this! Pleasure working with such a brilliant team on the Algonauts 2025 Challenge. Huge congrats to @shreydixit.bsky.social and everyone involved!
We did it! 🏆 We won Phase 1 and placed 2nd overall in the Algonauts 2025 Challenge. So proud of the crew
@keckjanis.bsky.social,Viktor Studenyak,Daniel Schad,Aleksandr Shpilevoi. Huge thanks to @andrejbicanski.bsky.social and @doellerlab.bsky.social for support. Report: arxiv.org/abs/2507.17958
@keckjanis.bsky.social,Viktor Studenyak,Daniel Schad,Aleksandr Shpilevoi. Huge thanks to @andrejbicanski.bsky.social and @doellerlab.bsky.social for support. Report: arxiv.org/abs/2507.17958
July 31, 2025 at 4:24 PM
Thrilled to have been part of this! Pleasure working with such a brilliant team on the Algonauts 2025 Challenge. Huge congrats to @shreydixit.bsky.social and everyone involved!
Reposted by Janis Keck
Daniel Carlstrom Schad, Shrey Dixit, Janis Keck, Viktor Studenyak, Aleksandr Shpilevoi, Andrej Bicanski: VIBE: Video-Input Brain Encoder for fMRI Response Modeling https://arxiv.org/abs/2507.17958 https://arxiv.org/pdf/2507.17958 https://arxiv.org/html/2507.17958
July 25, 2025 at 6:33 AM
Daniel Carlstrom Schad, Shrey Dixit, Janis Keck, Viktor Studenyak, Aleksandr Shpilevoi, Andrej Bicanski: VIBE: Video-Input Brain Encoder for fMRI Response Modeling https://arxiv.org/abs/2507.17958 https://arxiv.org/pdf/2507.17958 https://arxiv.org/html/2507.17958
Reposted by Janis Keck
Serious concerns about a new cortical biomarker for pain sensitivity
jamanetwork.com/journals/jam...
We (with @tspisak.bsky.social, @christianbuchel.bsky.social) published a commentary on Chowdhury, Bi et al. (2025, JAMA Neurology) raising serious concerns about their reported results.
👇 1/13
jamanetwork.com/journals/jam...
We (with @tspisak.bsky.social, @christianbuchel.bsky.social) published a commentary on Chowdhury, Bi et al. (2025, JAMA Neurology) raising serious concerns about their reported results.
👇 1/13
Concern About Predictive Performance of a Pain Sensitivity Biomarker
To the Editor Chowdhury et al1 evaluated a biomarker for pain sensitivity, combining peak alpha frequency and corticomotor excitability. The authors report outstanding performance (validation set area...
jamanetwork.com
July 22, 2025 at 3:24 PM
Serious concerns about a new cortical biomarker for pain sensitivity
jamanetwork.com/journals/jam...
We (with @tspisak.bsky.social, @christianbuchel.bsky.social) published a commentary on Chowdhury, Bi et al. (2025, JAMA Neurology) raising serious concerns about their reported results.
👇 1/13
jamanetwork.com/journals/jam...
We (with @tspisak.bsky.social, @christianbuchel.bsky.social) published a commentary on Chowdhury, Bi et al. (2025, JAMA Neurology) raising serious concerns about their reported results.
👇 1/13
Reposted by Janis Keck
New paper from the lab in Cell Reports! Rebekka Tenderra @rtenderra.bsky.social et al show that intelligence is linked to interindividual differences in relational integration in hippocampal cognitive maps, supporting an information-processing-based view on intelligence. www.cell.com/cell-reports...
Human intelligence relates to neural measures of cognitive map formation
Tenderra et al. show that human intelligence is linked to interindividual differences
in relational integration in hippocampal cognitive maps. Map-like representations
of information learned piecemeal...
www.cell.com
July 24, 2025 at 4:06 PM
New paper from the lab in Cell Reports! Rebekka Tenderra @rtenderra.bsky.social et al show that intelligence is linked to interindividual differences in relational integration in hippocampal cognitive maps, supporting an information-processing-based view on intelligence. www.cell.com/cell-reports...
Reposted by Janis Keck
Humans and animals can rapidly learn in new environments. What computations support this? We study the mechanisms of in-context reinforcement learning in transformers, and propose how episodic memory can support rapid learning. Work w/ @kanakarajanphd.bsky.social : arxiv.org/abs/2506.19686
From memories to maps: Mechanisms of in context reinforcement learning in transformers
Humans and animals show remarkable learning efficiency, adapting to new environments with minimal experience. This capability is not well captured by standard reinforcement learning algorithms that re...
arxiv.org
June 26, 2025 at 7:01 PM
Humans and animals can rapidly learn in new environments. What computations support this? We study the mechanisms of in-context reinforcement learning in transformers, and propose how episodic memory can support rapid learning. Work w/ @kanakarajanphd.bsky.social : arxiv.org/abs/2506.19686
Reposted by Janis Keck
🚨Preprint Alert: Who Does What in Deep Learning? Multidimensional Contribution of Neural Units using Game Theory: arxiv.org/abs/2506.19732
The result of my MSc thesis is out with @kayson.bsky.social @fatemehhadaeghi.bsky.social @patrickmineault.bsky.social @kordinglab.bsky.social, Claus C. Hilgetag
The result of my MSc thesis is out with @kayson.bsky.social @fatemehhadaeghi.bsky.social @patrickmineault.bsky.social @kordinglab.bsky.social, Claus C. Hilgetag
Who Does What in Deep Learning? Multidimensional Game-Theoretic Attribution of Function of Neural Units
Neural networks now generate text, images, and speech with billions of parameters, producing a need to know how each neural unit contributes to these high-dimensional outputs. Existing explainable-AI ...
arxiv.org
June 25, 2025 at 9:18 AM
🚨Preprint Alert: Who Does What in Deep Learning? Multidimensional Contribution of Neural Units using Game Theory: arxiv.org/abs/2506.19732
The result of my MSc thesis is out with @kayson.bsky.social @fatemehhadaeghi.bsky.social @patrickmineault.bsky.social @kordinglab.bsky.social, Claus C. Hilgetag
The result of my MSc thesis is out with @kayson.bsky.social @fatemehhadaeghi.bsky.social @patrickmineault.bsky.social @kordinglab.bsky.social, Claus C. Hilgetag
Excited to share that our work on the interplay of symmetric learning rules and successor representations (SR) is published in @plos.org (comp.bio)
Work done together with @doellerlab.bsky.social, @caswell.bsky.social and Juergen Jost.
doi.org/10.1371/jour...
#neuroskyence #compneurosky
1/n
Work done together with @doellerlab.bsky.social, @caswell.bsky.social and Juergen Jost.
doi.org/10.1371/jour...
#neuroskyence #compneurosky
1/n
Impact of symmetry in local learning rules on predictive neural representations and generalization in spatial navigation
Author summary The hippocampus is a brain region which plays a crucial role in spatial navigation for both animals and humans. Contemporarily, it’s thought to store predictive representations of the e...
doi.org
June 25, 2025 at 1:19 PM
Excited to share that our work on the interplay of symmetric learning rules and successor representations (SR) is published in @plos.org (comp.bio)
Work done together with @doellerlab.bsky.social, @caswell.bsky.social and Juergen Jost.
doi.org/10.1371/jour...
#neuroskyence #compneurosky
1/n
Work done together with @doellerlab.bsky.social, @caswell.bsky.social and Juergen Jost.
doi.org/10.1371/jour...
#neuroskyence #compneurosky
1/n