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Reposted by Sabina Srokova

Dr Jen Ryan @drjenryan.bsky.social · 17h

Memory problems will change how you see the world...literally 👀

Across two new papers, we examined the eye movement patterns of younger adults, older adults, individuals with mild cognitive impairment, and amnesic cases.

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Karen Campbell 🇨🇦 @karampbell.bsky.social · 8d

The brain represents the world around us as a series of neural states - stable patterns of activity that change as we move from one event to the next.

New paper by @selmalugtmeijer.bsky.social showing that neural states get longer as people age. #PsychSciSky

nature.com/articles/s42003-025-08792-4

Temporal dedifferentiation of neural states with age during naturalistic viewing - Communications Biology

Movie fMRI data reveals age-related lengthening of neural states in visual and prefrontal regions, reflecting reduced temporal differentiation while preserved alignment with perceived events suggests stable coarse event segmentation.

www.nature.com

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Sabina Srokova @sabina-srokova.bsky.social · 16d

50-day free share link: authors.elsevier.com/a/1lpYXivP7S...

Regular link:
doi.org/10.1016/j.ne...

Collab with @fnim-lab.bsky.social 🧠

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Sabina Srokova @sabina-srokova.bsky.social · 16d

New paper alert! 🚨 We show that age-related neural dedifferentiation in scene-selective cortex is tied to changes in eye movements. Using simultaneous fMRI + eye-tracking, we found that younger adults’ fixations covary with scene specificity, but this link weakens with age.

Link in post below 👇

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Josh Olivier @josholivier.bsky.social · Aug 25

I'm thrilled that my first first-author paper in @fnim-lab.bsky.social is now out!

We found that whole-brain cortical volume predicted the strength of neural reinstatement of scene information in the parahippocampal and medial place areas (PPA & MPA in the figure below). (1/2)

Scatter plots showing the strength and direction of any relationships between volume and reinstatement effects in the parahippocampal, medial, and occipital place areas.

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Jack Lynch @jacklynch000.bsky.social · Aug 17

I'll admit, I was skeptical when they said Gemini was just like a bunch of PhDs. But I gotta admit they nailed it.

Google's Gemini AI tells a Redditor it's 'cautiously optimistic' about fixing a coding bug, fails repeatedly, calls itself an embarrassment to 'all possible and impossible universes' before repeating 'I am a disgrace' 86 times in succession

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Jamie Hanson @jamielarsh.bsky.social · Aug 7

Mapping cerebral blood perfusion and its links to multi-scale brain organization across the human lifespan journals.plos.org/plosbiology/...

Mapping cerebral blood perfusion and its links to multi-scale brain organization across the human lifespan

How does cerebral blood perfusion map onto micro-, meso- and macro-scale brain structure? Using arterial spin labeling data from the Human Connectome Project, this study provides a detailed characteri...

journals.plos.org

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Petter Törnberg @pettertornberg.com · Aug 6

We built the simplest possible social media platform. No algorithms. No ads. Just LLM agents posting and following.

It still became a polarization machine.

Then we tried six interventions to fix social media.

The results were… not what we expected.

arxiv.org/abs/2508.03385

Can We Fix Social Media? Testing Prosocial Interventions using Generative Social Simulation

Social media platforms have been widely linked to societal harms, including rising polarization and the erosion of constructive debate. Can these problems be mitigated through prosocial interventions?...

arxiv.org

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Andrew Lampinen @lampinen.bsky.social · Aug 5

In neuroscience, we often try to understand systems by analyzing their representations — using tools like regression or RSA. But are these analyses biased towards discovering a subset of what a system represents? If you're interested in this question, check out our new commentary! Thread:

What do representations tell us about a system? Image of a mouse with a scope showing a vector of activity patterns, and a neural network with a vector of unit activity patterns
Common analyses of neural representations: Encoding models (relating activity to task features) drawing of an arrow from a trace saying [on_____on____] to a neuron and spike train. Comparing models via neural predictivity: comparing two neural networks by their R^2 to mouse brain activity. RSA: assessing brain-brain or model-brain correspondence using representational dissimilarity matrices

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Silvia Anderle @silvia-anderle.bsky.social · Aug 5

Delighted to share our latest review in Nature Reviews Neuroscience!
We examine the growing evidence that vascular dysfunction plays a key role in cognitive decline in ageing and dementia, and argue that preserving/restoring CBF should be central to future therapies.
www.nature.com/articles/s41...

The vascular contribution to cognitive decline in ageing and dementia - Nature Reviews Neuroscience

Growing evidence suggests that reduced cerebral blood flow contributes to cognitive decline in ageing and dementia. Attwell and colleagues discuss the underlying mechanisms and functional consequences...

www.nature.com

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Bradley Love @profdata.bsky.social · Nov 27

"Large language models surpass human experts in predicting neuroscience results" w @ken-lxl.bsky.social
and braingpt.org. LLMs integrate a noisy yet interrelated scientific literature to forecast outcomes. nature.com/articles/s41... 1/8

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neurologicpodcast.bsky.social @neurologicpodcast.bsky.social · Jul 21

We had a fascinating conversation with Dr. Louis Renoult (@renoultlouis.bsky.social) about all things memory! Here’s a preview of what we discussed and stay tuned for the full release of the episode later this week!

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SfN Journals @sfnjournals.bsky.social · Jul 18

Apply for the opportunity to serve on JNeurosci’s Early Career Researcher Advisory Board to get more involved in scientific publishing and advocate as an early career researcher.
Learn more and submit your application by July 25, 2025, 5pm ET: https://www.jneurosci.org/content/ecr-board-applications

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Thomas Yeo @bttyeo.bsky.social · Jul 17

1/11 Excited to share our @Naturestudy led by @leonooi.bsky.social @csabaorban.bsky.social @shaoshiz.bsky.social

AI performance is known to scale with logarithm of sample size (Kaplan 2020), but in many domains, sample size can be # participants or # measurements...

doi.org/10.1038/s415...

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David Clewett @davidclewett.bsky.social · Jul 16

New press on our study linking the locus coeruleus to memory formation 🔵: newsroom.ucla.edu/releases/bra... .

“…at a time when legislation promises ‘big and beautiful change,’ it turns out one of the brain’s smallest players may have the biggest impact on how we understand and remember our lives.”

Scientists unravel how a tiny region of the brain helps us form distinct memories, opening new avenues for PTSD, Alzheimer’s research

The locus coeruleus works like a “reset” button that separates the memory of one meaningful event from the next.

newsroom.ucla.edu

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Sabina Srokova @sabina-srokova.bsky.social · Jul 7

JNeurosci’s Early career researcher (ECR) Advisory Board just opened a call for applications (due July 18 at 5pm ET). Join our team for a unique opportunity to serve the ECR community and advocate for ECR needs in scientific publishing: www.jneurosci.org/content/ecr-...
@sfnjournals.bsky.social

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Marta Silva @martamasilva.bsky.social · Jul 1

🧠 Paper out!

We investigated how hippocampal and cortical ripples support memory during movie watching. We found that:

🎬 Hippocampal ripples mark event boundaries
🧩 Cortical ripples predict later recall

Ripples may help transform real-life experiences into lasting memories!

rdcu.be/eui9l

Movie-watching evokes ripple-like activity within events and at event boundaries

Nature Communications - The neural processes involved in memory formation for realistic experiences remain poorly understood. Here, the authors found that ripple-like activity in the human...

rdcu.be

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Luca Kolibius @lucakolibius.bsky.social · Jul 2

Despite recent criticism from Quiroga to our claim that Concept Neurons emerge from Conjunctive Coding Neurons we claim: “And yet, the hippocampus codes conjunctively!”.
We hope it sparks a smile (and maybe a few debates).

Read here: tinyurl.com/3ycv3vj2

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Sabina Srokova @sabina-srokova.bsky.social · Jun 30

A very cool follow-up on one of the first studies I did with @fnim-lab.bsky.social. Older adults do not gate task-irrelevant information during episodic retrieval. New data reveal that this is not due to age differences in memory strength, but may instead reflect a decline in inhibitory control.

Functional Neuroimaging of Memory Lab @fnim-lab.bsky.social · Jun 30

New Paper Alert! de Chastelaine et al found that young adults are able to employ 'retrieval gating' to allow mnemonic content to be aligned with a retrieval goal, but older adults failed to do this even when their memory was boosted to match young adults! www.sciencedirect.com/science/arti...

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Sabina Srokova @sabina-srokova.bsky.social · Jun 29

*GASP* !!! Can't wait to get these.

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Edvard I Moser @edvardmoser.bsky.social · Jun 26

Your brain doesn’t just passively track time ⏳ - it structures it.
In @Science.org we show that activity in 🧠 memory circuits (LEC) drifts constantly, but makes sharp jumps at key moments, segmenting life into meaningful events. (1/2)

👉 www.science.org/doi/10.1126/...

Event structure sculpts neural population dynamics in the lateral entorhinal cortex

Our experience of the world is a continuous stream of events that must be segmented and organized at multiple timescales. The neural mechanisms underlying this process remain unknown. In this work, we...

www.science.org

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Department of Imaging Neuroscience @imagingneuroucl.bsky.social · Jun 23

Drumroll... The SPM team will announce that SPM is now fully accessible from Python! 🐍 Learn more about SPM-Python at the SPM roundtable event (Friday, 1pm) and poster number 1841 at #OHBM2025. Try the beta for yourself at github.com/spm/spm-python [2/7]

GitHub - spm/spm-python: The Python interface to SPM

The Python interface to SPM. Contribute to spm/spm-python development by creating an account on GitHub.

github.com

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Boris Bernhardt @borismontreal.bsky.social · Jun 16

New preprint & OA dataset from the lab 🥳

An open dataset of cerebral tau deposition in young healthy adults based on [18F]MK6240 positron emission tomography

by Jack Lam and a terrific team of colleagues at the Neuro, Douglas and UCL

▶️ pdf doi.org/10.1101/2025...
▶️ bids osf.io/znt9d

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Nick Blauch @nblauch.bsky.social · Jun 16

What shapes the topography of high-level visual cortex?

Excited to share a new pre-print addressing this question with connectivity-constrained interactive topographic networks, titled "Retinotopic scaffolding of high-level vision", w/ Marlene Behrmann & David Plaut.

🧵 ↓ 1/n

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Hannah Payne @hannahpayne.bsky.social · Jun 11

My latest Aronov lab paper is now published @Nature!

When a chickadee looks at a distant location, the same place cells activate as if it were actually there 👁️

The hippocampus encodes where the bird is looking, AND what it expects to see next -- enabling spatial reasoning from afar

bit.ly/3HvWSum

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