Casper Kerrén
@ckerren.bsky.social
Postdoc Max Planck Institute for Human Cognitive and Brain Sciences.
Fantastically cool paper!
Now out in Hippocampus!! 📣💥
We examined anatomical inputs to the hippocampal region in six species - the tenrec, rat, marmoset, cat, macaque, and human - and found that hippocampal processing operates on fundamentally different types of information across species! (1/3)
dx.doi.org/10.1002/hipo...
We examined anatomical inputs to the hippocampal region in six species - the tenrec, rat, marmoset, cat, macaque, and human - and found that hippocampal processing operates on fundamentally different types of information across species! (1/3)
dx.doi.org/10.1002/hipo...
Phylogeny of Cortical‐Hippocampal Projections Reveals Selective Elimination of Input From Sensory Regions
The study of cross-species differences in the organization of the cerebral cortex received significant attention during the past century. However, the evolutionary principles governing changes in bra...
dx.doi.org
September 8, 2026 at 7:34 PM
Fantastically cool paper!
Reposted by Casper Kerrén
(1/2) The EEG Moments Dataset (EMD) is now public! EMD is a large-scale dataset of simultaneous EEG and eye-tracking recordings of 6 participants for 1,102 naturalistic 3-second videos (while maintaining central fixation), together with rich video metadata.
arxiv.org/abs/2608.28768
arxiv.org/abs/2608.28768
September 8, 2026 at 10:41 AM
(1/2) The EEG Moments Dataset (EMD) is now public! EMD is a large-scale dataset of simultaneous EEG and eye-tracking recordings of 6 participants for 1,102 naturalistic 3-second videos (while maintaining central fixation), together with rich video metadata.
arxiv.org/abs/2608.28768
arxiv.org/abs/2608.28768
Really cool stuff from @vstudenyak.bsky.social !
New preprint from my PhD at MPI CBS 🧠, with @doellerlab.bsky.social and @andrejbicanski.bsky.social
“A computational model of the two dentate gyrus blades”
What mechanisms allow the two DG blades to support distinct coding regimes? (www.biorxiv.org/content/10.6...)
1/9
“A computational model of the two dentate gyrus blades”
What mechanisms allow the two DG blades to support distinct coding regimes? (www.biorxiv.org/content/10.6...)
1/9
September 8, 2026 at 3:27 AM
Really cool stuff from @vstudenyak.bsky.social !
Reposted by Casper Kerrén
Excited to share the first first-author preprint of my PhD at NYU with @s-michelmann.bsky.social andDaryl Fougnie. Using eye-tracking in a novel behavioral paradigm, we reveal the mechanisms by which episodic memory (EM) and working memory (WM) interact. 🧠
doi: doi.org/10.64898/202...
doi: doi.org/10.64898/202...
September 2, 2026 at 11:34 PM
Excited to share the first first-author preprint of my PhD at NYU with @s-michelmann.bsky.social andDaryl Fougnie. Using eye-tracking in a novel behavioral paradigm, we reveal the mechanisms by which episodic memory (EM) and working memory (WM) interact. 🧠
doi: doi.org/10.64898/202...
doi: doi.org/10.64898/202...
Reposted by Casper Kerrén
Very excited to see this out — real teamwork, led by @laurenb29.bsky.social & Will de Cothi with @lgiocomo.bsky.social, @colinlever.bsky.social, Laurenz Muessig, Fábio Rodrigues, Francesca Cacucci, Tom Wills, Yanjun Sun & Steven Poulter. In Nature Comms:
www.nature.com/articles/s41467-026-76686-y
www.nature.com/articles/s41467-026-76686-y
September 1, 2026 at 8:35 AM
Very excited to see this out — real teamwork, led by @laurenb29.bsky.social & Will de Cothi with @lgiocomo.bsky.social, @colinlever.bsky.social, Laurenz Muessig, Fábio Rodrigues, Francesca Cacucci, Tom Wills, Yanjun Sun & Steven Poulter. In Nature Comms:
www.nature.com/articles/s41467-026-76686-y
www.nature.com/articles/s41467-026-76686-y
Reposted by Casper Kerrén
And we’re off! 🚀 Symposium submissions for ICOM7 are open! Can’t wait to see what ideas you’ll be bringing to Glasgow!!
Symposium submission is now open! The deadline is 2nd November, so please get your applications in on time. We welcome not just traditional formats but also encourage panel discussions or other creative formats!
icom-memory.org/symposia-sub...
#philsky #psychscisky #neuroskyence #cognition 🧪
icom-memory.org/symposia-sub...
#philsky #psychscisky #neuroskyence #cognition 🧪
ICOM - International Conference on Memory 2027
SYMPOSIA SUBMISSION The symposia submission for ICOM7 is now online! How to Submit Submissions are made online via the official ICOM7 Symposia Submission platform: https://icom2027.abstractserver.com/...
icom-memory.org
September 1, 2026 at 11:46 AM
And we’re off! 🚀 Symposium submissions for ICOM7 are open! Can’t wait to see what ideas you’ll be bringing to Glasgow!!
Reposted by Casper Kerrén
Are brains and artificial neural networks converging onto universal representations?
There is a seductive idea making the rounds in NeuroAI / machine learning: train systems well enough, and they all converge on the same representation of reality (i.e. a unique world model).
We have thoughts™
1/n
There is a seductive idea making the rounds in NeuroAI / machine learning: train systems well enough, and they all converge on the same representation of reality (i.e. a unique world model).
We have thoughts™
1/n
The Umwelt Representation Hypothesis: rethinking Universality
Recent studies reveal striking representational alignment between artificial neural
networks (ANNs) and biological brains, leading to proposals that all sufficiently
capable systems converge on univer...
www.cell.com
August 28, 2026 at 2:59 PM
Are brains and artificial neural networks converging onto universal representations?
There is a seductive idea making the rounds in NeuroAI / machine learning: train systems well enough, and they all converge on the same representation of reality (i.e. a unique world model).
We have thoughts™
1/n
There is a seductive idea making the rounds in NeuroAI / machine learning: train systems well enough, and they all converge on the same representation of reality (i.e. a unique world model).
We have thoughts™
1/n
Beautiful stuff!
Episodic memory forms through action: gaze shifts sequentially sample experience as it unfolds 👀🏞️ 🧠
But actions may also help organize how the brain reactivates episodic memories! 👀🧠💭 🏞️
Check out our new preprint 👇
doi.org/10.64898/202...
🎉
@tobiasstaudigl.bsky.social & Aditya Chowdhury
👇🧵
But actions may also help organize how the brain reactivates episodic memories! 👀🧠💭 🏞️
Check out our new preprint 👇
doi.org/10.64898/202...
🎉
@tobiasstaudigl.bsky.social & Aditya Chowdhury
👇🧵
doi.org
August 17, 2026 at 9:06 PM
Beautiful stuff!
Super cool paper by @sandervanbree.bsky.social and @martinhebart.bsky.social
Excited to share our preprint! w/ @martinhebart.bsky.social
To understand how primates visually process objects in the world, we rely on both research in human and macaque IT. But what representations of object space are actually shared between them?
biorxiv.org/content/10.6...
Quick thread 🧵
To understand how primates visually process objects in the world, we rely on both research in human and macaque IT. But what representations of object space are actually shared between them?
biorxiv.org/content/10.6...
Quick thread 🧵
Shared and Distinct High-Dimensional Object Spaces in Human and Macaque Inferotemporal Cortex
Human and macaque studies of inferotemporal cortex (IT) have shaped our understanding of object vision, yet the extent of their representational alignment and the precise nature of this correspondence...
biorxiv.org
August 13, 2026 at 4:13 AM
Super cool paper by @sandervanbree.bsky.social and @martinhebart.bsky.social
Reposted by Casper Kerrén
Excited to share our preprint! w/ @martinhebart.bsky.social
To understand how primates visually process objects in the world, we rely on both research in human and macaque IT. But what representations of object space are actually shared between them?
biorxiv.org/content/10.6...
Quick thread 🧵
To understand how primates visually process objects in the world, we rely on both research in human and macaque IT. But what representations of object space are actually shared between them?
biorxiv.org/content/10.6...
Quick thread 🧵
Shared and Distinct High-Dimensional Object Spaces in Human and Macaque Inferotemporal Cortex
Human and macaque studies of inferotemporal cortex (IT) have shaped our understanding of object vision, yet the extent of their representational alignment and the precise nature of this correspondence...
biorxiv.org
August 12, 2026 at 1:55 PM
Excited to share our preprint! w/ @martinhebart.bsky.social
To understand how primates visually process objects in the world, we rely on both research in human and macaque IT. But what representations of object space are actually shared between them?
biorxiv.org/content/10.6...
Quick thread 🧵
To understand how primates visually process objects in the world, we rely on both research in human and macaque IT. But what representations of object space are actually shared between them?
biorxiv.org/content/10.6...
Quick thread 🧵
Reposted by Casper Kerrén
Check out our new paper! 🧠
Me, @xiongbowu.bsky.social and @fuentemilla.bsky.social review how reactivation at the end of events support memory formation and propose it serves multiple functions from preventing interference to helping preserve temporal continuity! ✨
www.cell.com/trends/cogni...
Me, @xiongbowu.bsky.social and @fuentemilla.bsky.social review how reactivation at the end of events support memory formation and propose it serves multiple functions from preventing interference to helping preserve temporal continuity! ✨
www.cell.com/trends/cogni...
Neural reactivation supports memory formation when events end
Memory routinely transforms continuous experience into discrete episodes that support
flexible retrieval. We propose that these structured representations are established
via rapid neural reactivation...
www.cell.com
August 12, 2026 at 3:17 PM
Check out our new paper! 🧠
Me, @xiongbowu.bsky.social and @fuentemilla.bsky.social review how reactivation at the end of events support memory formation and propose it serves multiple functions from preventing interference to helping preserve temporal continuity! ✨
www.cell.com/trends/cogni...
Me, @xiongbowu.bsky.social and @fuentemilla.bsky.social review how reactivation at the end of events support memory formation and propose it serves multiple functions from preventing interference to helping preserve temporal continuity! ✨
www.cell.com/trends/cogni...
Very happy to share our new paper, now published in @elife.bsky.social, together with @gonzalezgarcia.bsky.social and @lindedomingo.bsky.social
elifesciences.org/reviewed-pre...
elifesciences.org/reviewed-pre...
Characterising semantic prioritisation in visual working memory
elifesciences.org
August 7, 2026 at 8:07 PM
Very happy to share our new paper, now published in @elife.bsky.social, together with @gonzalezgarcia.bsky.social and @lindedomingo.bsky.social
elifesciences.org/reviewed-pre...
elifesciences.org/reviewed-pre...
Reposted by Casper Kerrén
Summer Preprint Alert 🔥🚨
Breathing isn't just for oxygen; it’s a rhythmic pacemaker for the sleeping brain.
Our new preprint shows that the respiratory cycle actually gates memory reactivation during NREM sleep! 🧠😴💨
👇🧵(1/8)
Breathing isn't just for oxygen; it’s a rhythmic pacemaker for the sleeping brain.
Our new preprint shows that the respiratory cycle actually gates memory reactivation during NREM sleep! 🧠😴💨
👇🧵(1/8)
The breathing cycle gates memory reactivation during human NREM sleep https://www.biorxiv.org/content/10.64898/2026.07.29.741474v1
August 5, 2026 at 7:39 AM
Summer Preprint Alert 🔥🚨
Breathing isn't just for oxygen; it’s a rhythmic pacemaker for the sleeping brain.
Our new preprint shows that the respiratory cycle actually gates memory reactivation during NREM sleep! 🧠😴💨
👇🧵(1/8)
Breathing isn't just for oxygen; it’s a rhythmic pacemaker for the sleeping brain.
Our new preprint shows that the respiratory cycle actually gates memory reactivation during NREM sleep! 🧠😴💨
👇🧵(1/8)
Reposted by Casper Kerrén
Can neural networks model the human perception of geometric shapes?
Maxence Pajot, Théo Morfoisse, Mathias Sablé-Meyer, Yair Lakretz, Stanislas Dehaene
journals.plos.org/ploscompbiol...
Maxence Pajot, Théo Morfoisse, Mathias Sablé-Meyer, Yair Lakretz, Stanislas Dehaene
journals.plos.org/ploscompbiol...
Can neural networks model the human perception of geometric shapes?
Author summary Recent neural networks have achieved remarkable success across a wide range of visual tasks, often rivaling or surpassing human performance. Yet, it remains unclear whether these system...
journals.plos.org
July 30, 2026 at 1:00 PM
Can neural networks model the human perception of geometric shapes?
Maxence Pajot, Théo Morfoisse, Mathias Sablé-Meyer, Yair Lakretz, Stanislas Dehaene
journals.plos.org/ploscompbiol...
Maxence Pajot, Théo Morfoisse, Mathias Sablé-Meyer, Yair Lakretz, Stanislas Dehaene
journals.plos.org/ploscompbiol...
Reposted by Casper Kerrén
📣New paper!
How does the sleeping brain help us to integrate new experiences while managing memories from the past?
For his PhD work, @sabbaspoor.bsky.social recorded hippocampal ensembles in freely moving monkeys and found something unexpected. 🧵1/n
www.nature.com/articles/s41...
🧪🧠📈👩🔬#OpenAccess
How does the sleeping brain help us to integrate new experiences while managing memories from the past?
For his PhD work, @sabbaspoor.bsky.social recorded hippocampal ensembles in freely moving monkeys and found something unexpected. 🧵1/n
www.nature.com/articles/s41...
🧪🧠📈👩🔬#OpenAccess
Experience reorganizes content-specific memory traces in macaques - Nature Neuroscience
In macaques, old memories, relative to new ones, are supported by more stable and interconnected cell assemblies. New-biased and old-biased assemblies reactivate during overnight sleep and can sometim...
www.nature.com
July 30, 2026 at 12:01 PM
📣New paper!
How does the sleeping brain help us to integrate new experiences while managing memories from the past?
For his PhD work, @sabbaspoor.bsky.social recorded hippocampal ensembles in freely moving monkeys and found something unexpected. 🧵1/n
www.nature.com/articles/s41...
🧪🧠📈👩🔬#OpenAccess
How does the sleeping brain help us to integrate new experiences while managing memories from the past?
For his PhD work, @sabbaspoor.bsky.social recorded hippocampal ensembles in freely moving monkeys and found something unexpected. 🧵1/n
www.nature.com/articles/s41...
🧪🧠📈👩🔬#OpenAccess
Reposted by Casper Kerrén
Can we study MTL ripples non-invasively?
New preprint! We show that source-resolved MEG tracks ripple-like activity during sleep that:
• localizes to the MTL
• follows the canonical SO–spindle hierarchy
• matches an iEEG benchmark
• indexes memory reactivation
www.biorxiv.org/content/10.6...
New preprint! We show that source-resolved MEG tracks ripple-like activity during sleep that:
• localizes to the MTL
• follows the canonical SO–spindle hierarchy
• matches an iEEG benchmark
• indexes memory reactivation
www.biorxiv.org/content/10.6...
Non-invasive tracking of ripple-like activity during human sleep using MEG
Hippocampal ripples are considered a key mechanism of sleep-dependent memory consolidation. In humans, however, their direct investigation has relied on invasive recordings from patients with epilepsy...
www.biorxiv.org
July 24, 2026 at 7:56 AM
Can we study MTL ripples non-invasively?
New preprint! We show that source-resolved MEG tracks ripple-like activity during sleep that:
• localizes to the MTL
• follows the canonical SO–spindle hierarchy
• matches an iEEG benchmark
• indexes memory reactivation
www.biorxiv.org/content/10.6...
New preprint! We show that source-resolved MEG tracks ripple-like activity during sleep that:
• localizes to the MTL
• follows the canonical SO–spindle hierarchy
• matches an iEEG benchmark
• indexes memory reactivation
www.biorxiv.org/content/10.6...
Excited to finally share our new paper in @natcomms.nature.com:
Hippocampal ripples initiate cortical dimensionality expansion for memory retrieval
www.nature.com/articles/s41...
With @s-michelmann.bsky.social and @doellerlab.bsky.social
Hippocampal ripples initiate cortical dimensionality expansion for memory retrieval
www.nature.com/articles/s41...
With @s-michelmann.bsky.social and @doellerlab.bsky.social
Hippocampal ripples initiate cortical dimensionality expansion for memory retrieval - Nature Communications
How past experiences are reconstructed from memory remains unclear. Here the authors used intracranial EEG to show that hippocampal ripples reshape the geometry of cortical representations, supporting...
www.nature.com
July 24, 2026 at 9:40 PM
Excited to finally share our new paper in @natcomms.nature.com:
Hippocampal ripples initiate cortical dimensionality expansion for memory retrieval
www.nature.com/articles/s41...
With @s-michelmann.bsky.social and @doellerlab.bsky.social
Hippocampal ripples initiate cortical dimensionality expansion for memory retrieval
www.nature.com/articles/s41...
With @s-michelmann.bsky.social and @doellerlab.bsky.social
Reposted by Casper Kerrén
Sensing your body (‘Interoception’) is everywhere in theories of mental health.
But when we tested how well hundreds of people sensed their heart and lungs, the link to symptoms was almost nowhere to be found. 💣
🚨New @natmentalhealth.nature.com paper 🚨🎉 asks why 🧵
www.nature.com/articles/s44...
But when we tested how well hundreds of people sensed their heart and lungs, the link to symptoms was almost nowhere to be found. 💣
🚨New @natmentalhealth.nature.com paper 🚨🎉 asks why 🧵
www.nature.com/articles/s44...
July 23, 2026 at 11:56 AM
Sensing your body (‘Interoception’) is everywhere in theories of mental health.
But when we tested how well hundreds of people sensed their heart and lungs, the link to symptoms was almost nowhere to be found. 💣
🚨New @natmentalhealth.nature.com paper 🚨🎉 asks why 🧵
www.nature.com/articles/s44...
But when we tested how well hundreds of people sensed their heart and lungs, the link to symptoms was almost nowhere to be found. 💣
🚨New @natmentalhealth.nature.com paper 🚨🎉 asks why 🧵
www.nature.com/articles/s44...
Reposted by Casper Kerrén
A neural network model of free recall learns multiple memory strategies
www.nature.com/articles/s42...
www.nature.com/articles/s42...
A neural network model of free recall learns multiple memory strategies - Nature Machine Intelligence
Li et al. show that recurrent neural networks optimized for free recall discover diverse, human-like memory strategies beyond classical temporal context models, with top models using an index-based me...
www.nature.com
July 20, 2026 at 6:21 PM
A neural network model of free recall learns multiple memory strategies
www.nature.com/articles/s42...
www.nature.com/articles/s42...
Reposted by Casper Kerrén
Out today on @nature.com! Connecting neural specialization, population geometry, and their functional implications across the cortical hierarchy. So grateful for this beautiful and fun collaboration with @shuqiw.bsky.social, S Muscinelli, L Paninski, and @stefanofusi.bsky.social!
Rarely categorical, highly separable representations along the cortical hierarchy - Nature
Cortical circuits prioritize diversity over categorical structure, supporting a computational regime geared towards high-dimensional, highly separable neural representations.
www.nature.com
July 15, 2026 at 4:47 PM
Out today on @nature.com! Connecting neural specialization, population geometry, and their functional implications across the cortical hierarchy. So grateful for this beautiful and fun collaboration with @shuqiw.bsky.social, S Muscinelli, L Paninski, and @stefanofusi.bsky.social!
Reposted by Casper Kerrén
Join us at @mpicbs.bsky.social as a fully funded 4-year PostDoc (m/f/d) in Cognitive & Computational Neuroscience (Area: Functions of the Perirhinal Cortex). Excellent infrastructure with a leading scientific network. Apply by 17 August: recruitingapp-5218.de.umantis.com/Vacancies/44...?
Fully funded PostDoc Position (m/f/d) for 4 years in Cognitive and Computational Neuroscience (Area: Functions of the Perirhinal Cortex) - Doeller Lab | Karriereportal Max-Planck-Institut für Kogniti...
Fully funded PostDoc Position (m/f/d) for 4 years in Cognitive and Computational Neuroscience (Area: Functions of the Perirhinal Cortex) - Doeller Lab | Karriereportal Max-Planck-Institut für Kogniti...
recruitingapp-5218.de.umantis.com
July 14, 2026 at 11:41 AM
Join us at @mpicbs.bsky.social as a fully funded 4-year PostDoc (m/f/d) in Cognitive & Computational Neuroscience (Area: Functions of the Perirhinal Cortex). Excellent infrastructure with a leading scientific network. Apply by 17 August: recruitingapp-5218.de.umantis.com/Vacancies/44...?
Reposted by Casper Kerrén
Ever wondered how the hippocampal cognitive map is read-out?
@changmin-yu.bsky.social @zilong-ji.bsky.social with Jake & John, show that, during navigation, theta sweeps indicate remembered goal-directions (cf. current/next movements or perceptual targets) 1/2
www.nature.com/articles/s41...
@changmin-yu.bsky.social @zilong-ji.bsky.social with Jake & John, show that, during navigation, theta sweeps indicate remembered goal-directions (cf. current/next movements or perceptual targets) 1/2
www.nature.com/articles/s41...
July 1, 2026 at 9:35 AM
Ever wondered how the hippocampal cognitive map is read-out?
@changmin-yu.bsky.social @zilong-ji.bsky.social with Jake & John, show that, during navigation, theta sweeps indicate remembered goal-directions (cf. current/next movements or perceptual targets) 1/2
www.nature.com/articles/s41...
@changmin-yu.bsky.social @zilong-ji.bsky.social with Jake & John, show that, during navigation, theta sweeps indicate remembered goal-directions (cf. current/next movements or perceptual targets) 1/2
www.nature.com/articles/s41...
Reposted by Casper Kerrén
🔔 Our new preprint is out! Here we asked whether sleep spindles - a hallmark NREM rhythm linked to plasticity and memory - changes how well latent working memory representations can be accessed after a nap.
Sleep spindles enhance latent working memory representations https://www.biorxiv.org/content/10.64898/2026.06.26.734777v1
June 28, 2026 at 2:41 PM
🔔 Our new preprint is out! Here we asked whether sleep spindles - a hallmark NREM rhythm linked to plasticity and memory - changes how well latent working memory representations can be accessed after a nap.
Reposted by Casper Kerrén
Really excited about this work with the awesome Will de Cothi & @shipleysj.bsky.social, out in Nature Reviews Neuroscience. We propose acetylcholine is an analogue of dopamine — tracking not reward prediction errors but state-transition prediction errors. https://doi.org/10.1038/s41583-026-01058-w
June 23, 2026 at 6:29 PM
Really excited about this work with the awesome Will de Cothi & @shipleysj.bsky.social, out in Nature Reviews Neuroscience. We propose acetylcholine is an analogue of dopamine — tracking not reward prediction errors but state-transition prediction errors. https://doi.org/10.1038/s41583-026-01058-w
Reposted by Casper Kerrén
I am recruiting a postdoctoral researcher and a PhD student, funded by a new ERC grant. The grant focuses on the role of the hippocampus in visual perception, using 7T fMRI (hippocampal subfields, cortical layers) and MEG+iEEG. The intended start dates for both positions are in early 2027. 🧠🟦 1/3
June 24, 2026 at 9:07 AM
I am recruiting a postdoctoral researcher and a PhD student, funded by a new ERC grant. The grant focuses on the role of the hippocampus in visual perception, using 7T fMRI (hippocampal subfields, cortical layers) and MEG+iEEG. The intended start dates for both positions are in early 2027. 🧠🟦 1/3