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skjerns.de
Simon Kern
@skjerns.de
380 followers 190 following 79 posts
Sleep & Memory researcher @ CIMH Mannheim with @gordonfeld.bsky.social . Interested in replay and applied machine learning in the context of episodic and declarative memory. MEG and Python enthusiast.
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Reposted by Simon Kern
ianhussey.mmmdata.io
Ian Hussey @ianhussey.mmmdata.io · 22d
Proposal for how to fix family wise error rates.

For every uncorrected p value you must add an extra letter to the claim.

“Eating chocolate maaaaaaaaay be associated with lower rates of stroke”
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Reposted by Simon Kern
dresler.bsky.social
Martin Dresler @dresler.bsky.social · 24d
17,058 proposals received, 1,650 to be funded.

Break-even, where more money is paid out than burned by the process, is ~2 months time investment per application (assuming only few admin/review/non-submitted efforts).

Uncomfortably close to predatory territory: doi.org/10.1111/imcb...
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skjerns.de
Simon Kern @skjerns.de · 26d
www.astralcodexten.com/p/your-revie...

Memory beyond synaptic plasticity - are there alternatives? Some thoughts and ideas from my favorite blog. Was an thought-provocing read, albeit I'm not convinced by all things said.
Your Review: The Synaptic Plasticity and Memory Hypothesis
Finalist #11 in the Review Contest
www.astralcodexten.com
Reposted by Simon Kern
matthiasnau.bsky.social
Matthias Nau @matthiasnau.bsky.social · Sep 4
A transformation from vision to imagery in the human brain. Intriguing new preprint by Roy & Naselaris et al for anyone interested in mental imagery!
www.biorxiv.org/content/10.1...
A transformation from vision to imagery in the human brain
Extensive work has shown that the visual cortex is reactivated during mental imagery, and that models trained on visual data can predict imagery activity and decode imagined stimuli. These findings ma...
www.biorxiv.org
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skjerns.de
Simon Kern @skjerns.de · Sep 3
cool evidence for systems consolidation in humans
johnsakon.bsky.social
john sakon @johnsakon.bsky.social · Aug 28
Now here’s the really cool part: theory predicts medial temporal lobe (MTL) first stores memories, but cortex is the final storage site. Our models show this after one night of sleep! MTL models decode presleep, while frontal cortex (FC) decodes postsleep, but not vice versa. 5/6
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Reposted by Simon Kern
johnsakon.bsky.social
john sakon @johnsakon.bsky.social · Aug 28
Excited to present our new work reading minds!

Ok, not *that* kind of mind reading, but we have created a deep learning method capable of using single neuron recordings from people watching episodes of TV that can predict when they recall specific memories from the episode. 1/6
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skjerns.de
Simon Kern @skjerns.de · Aug 24
I'm praying that I'll never have to use LibreOffice in my professional life 🙏 I even have a VM running on my Linux desktop just so I can use office.
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Reposted by Simon Kern
nicoschuck.bsky.social
Nico Schuck @nicoschuck.bsky.social · Aug 22
Delighted to share our work on replay and successor representations! We find replay during very short task pauses in human visual cortex that is linked to learning SRs & happens when learning is implicit. Study led by @lnnrtwttkhn.bsky.social

#compneuro #neuroskyence

www.pnas.org/doi/10.1073/...
Replay in the human visual cortex during brief task pauses is linked to implicit learning of successor representations | PNAS
Humans can implicitly learn about multistep sequential relationships between events in the environment from their statistical co-occurrence. Theore...
www.pnas.org
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skjerns.de
Simon Kern @skjerns.de · Aug 19
Ah, no updates for the last three years :( It was the closest I could get to a proper Office on Linux. But I ditched it as it was too buggy and unreliable. I am working with a full Tiny10 VM instead.

Let me know what your experience is! Anyway winapps is a cool concept.
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skjerns.de
Simon Kern @skjerns.de · Aug 19
Does it work reliably with maximized windows on a multi screen setup?

I've tried it a year ago and it was quite a mess and crashed every now and then, maximized over both screens, etc. Also no printing support somehow and a lot of the features like drag& drop, printing etc were missing
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skjerns.de
Simon Kern @skjerns.de · Aug 18
I disagree, the problems in imagegens (i.e. text generation) are of different origin than problems of token-based LLMs (i.e. arguably hallucinations). Making a claim based on one to transfer to the other is misleading at best.

Or would be the underlying reason you propose?
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skjerns.de
Simon Kern @skjerns.de · Aug 17
No, because it's a vision model that is just not made for text output
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skjerns.de
Simon Kern @skjerns.de · Aug 17
❤️ my favorite city
Reposted by Simon Kern
timaguth.bsky.social
Tim Guth @timaguth.bsky.social · Aug 11
Excited to share our new paper on theta-phase locking of single neurons during human spatial memory:

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

With @lukaskunz.bsky.social, Joshua Jacobs, and our colleagues from the University of Freiburg
Neuronal theta-phase locking increased during periods of elevated theta power, when aperiodic activity exhibited steeper slopes, and when clear theta oscillations were detected. Theta-phase locking was similarly strong during the successful and unsuccessful encoding and retrieval of memories. Some neurons changed their preferred theta phases between encoding and retrieval.
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Reposted by Simon Kern
nilspetras.bsky.social
Nils Petras @nilspetras.bsky.social · Aug 3
Liebe Menschen in Mannheim und einem Umkreis von 100km, ich würde mich sehr freuen, wenn ihr an dieser wunderbaren psychologischen Studie teilnehmt. Reposten ist natürlich auch sehr willkommen! Hier die Studieninfo von der Studienleitung: 🧵1/7
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skjerns.de
Simon Kern @skjerns.de · Jul 28
That would be amazing! The biggest problem with open source is that volunteer programmers are mainly engineers and not UIX designers. Most FOSS works perfectly fine from a technical POV but it's a pain to use. Tight integration of UIX and SWE requires org structure, which FOSS often lack by default
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skjerns.de
Simon Kern @skjerns.de · Jul 28
Productivity would tank. LibreOffice (especially draw) is simply no replacement for MSOffice (And I'm saying this as a Linux user). MATLAB on the other hand...😏
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Reposted by Simon Kern
danlikesbrains.bsky.social
Daniel Kluger @danlikesbrains.bsky.social · Jul 24
Undoubtedly the most massive group effort I was ever lucky to be involved in. Led by the ever-unwavering
@annekeitel.bsky.social, this preprint synthesizes the status quo of what we (don't) know about neural oscillations. Grateful to be part of the @scone-neuro.bsky.social network. #neuroskyence
annekeitel.bsky.social
Anne Keitel @annekeitel.bsky.social · Jul 22
Our oscillations consensus paper is finally out as a preprint 🤩 thanks to everyone involved
arxiv.org/abs/2507.15639
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Reposted by Simon Kern
olegolt.bsky.social
Ole Goltermann @olegolt.bsky.social · Jul 22
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
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
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skjerns.de
Simon Kern @skjerns.de · Jul 16
woah, this is surprising! (might be useful to include in the figure, seen now in the preprint that it was 4o/llama4/flash, I guess o3 would spot it more readily? but surprising that gemini flash can do that)
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skjerns.de
Simon Kern @skjerns.de · Jul 12
Feeding it to "the beast" is unproblematic imo. It will end up in its corpus anyway as soon as it's published and scraped. Directly sending it will not change that.
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skjerns.de
Simon Kern @skjerns.de · Jul 12
You are overestimating how quickly the models incorporate new knowledge
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Reposted by Simon Kern
aforli89.bsky.social
Angelo Forli @aforli89.bsky.social · Jul 9
Our study is out in Nature!
Using wireless Neuropixels we recorded hippocampal activity in freely flying bats and uncovered replay and theta(less) sweeps, revealing striking differences from classic rodent models.

👉 www.nature.com/articles/s41...
Replay and representation dynamics in the hippocampus of freely flying bats - Nature
Nature - Replay and representation dynamics in the hippocampus of freely flying bats
www.nature.com
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Reposted by Simon Kern
Jeffrey Bowers @jeffreybowers.bsky.social · Jun 26
Binz et al. (in press, Nature) developed an LLM called Centaur that better predicts human responses in 159 of 160 behavioural experiments compared to existing cognitive models. See: arxiv.org/abs/2410.20268
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Reposted by Simon Kern
danlikesbrains.bsky.social
Daniel Kluger @danlikesbrains.bsky.social · Jun 30
New preprint with amazing work from @nchalas.bsky.social:

How does respiration influence (un-)predictable near-threshold perception? MEG, arousal modulation, excitability states, respiration phase-resolved connectivity changes - it's all there :)

#neuroskyence

www.biorxiv.org/content/10.1...
Respiration as a dynamic modulator of sensory sampling
Respiration dynamically modulates sensory perception by orchestrating transient states of the brain and the body. Using simultaneous recordings of high-density magneto-encephalography (MEG), respirati...
www.biorxiv.org
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