Exciting new preprint from the lab, led by @lizsiefert.bsky.social , together with @annaschapiro.bsky.social. Findings help to clarify when hippocampal ripples occur across wake and sleep, better aligning human data with animal models.

New peer-reviewed paper w/ @mheilbron.bsky.social, @predictivebrain.bsky.social & Jakub Szewczyk! Pre-onset brain encoding has been taken as evidence that brains–like LLMs–predict upcoming words. We show that the same signatures arise in systems that cannot predict. (elifesciences.org) (1/8)

Two postdoc opportunities @yale.edu in human neurophysiology. One position in my lab @wutsaiyale.bsky.social focusing on human cognitive neurophysiology. Details at helfrich-lab.com/news/ Plus a possible collab with anesthesiology 👇 #NeuroTwitter #NeuroJobs #neuroskyence #EEG Please share.

Increasing EEG electrode density improves decoding of visual categories and source localization: an exploratory ultra-high-density EEG study

🔔PREPRINT: Sleep ripples drive single-neuron reactivation for human memory consolidation 1/9: How does sleep support human memory consolidation? To test this, we recorded hundreds of neurons in the human medial temporal lobe (MTL) across learning, wakefulness, and sleep. doi.org/10.64898/202...

For more than a century, the study of brain lesions has been central to understanding cognitive processes and normal brain function (e.g., Broca’s studies). However, what electrophysiological signatures emerge following a brain lesion?

New in #JNeurosci from Pinggal et al: Medication-withdrawn adults with ADHD exhibit more sleep-like brain activity while awake than neurotypical adults that is linked to poorer performance in a task that requires sustained attention. https://doi.org/10.1523/JNEUROSCI.1694-25.2025

I couldn't find a tool to plot different #neuroimaging data in one consistent style, so I made one! Meet yabplot (yet another brain plot) - a #Python package for (sub)cortex & tracts.🧠 - Simple API - Built-in atlases - Custom atlas support 🔗 github.com/teanijarv/ya... (drop a ⭐️!)

Still pumped up from yesterday's international sleep replay workshop! Provocative talks, engaging discussion groups & enthusiastic engagement by all attendees from undergrads to full professors. Stay tuned for info on the next one. And now, on to @cnsmtg.bsky.social. Check out our lab's posters!

Save the date for the 1st MEEP – Heidelberg Summer School on Memory and Sleep: May 31st to June 3rd Keynote speakers: @marwimber.bsky.social @mgarvert.bsky.social & Dan Bendor Sessions on: memory processes sleep & replay analysis and stimulation techniques www.zi-mannheim.de/forschung/ab... plz rp

A worm, H. miamia, appears to have a diffuse 'brain' without regional specialization. "Early brains may have arisen through the condensation of diffuse nerve nets into unregionalized brains, with regionalization evolving secondarily." www.biorxiv.org/content/10.1...

#CNS2026 | Satellite - International Sleep Replay Workshop Friday, March 6, 2026, 8:00 am - 6:00 pm, Salon F The workshop is open to all: experience with sleep research is not required. Register here: isrw.bio.uci.edu Registration Deadline, February 15th @cogneuronews.bsky.social #SleepRelay

"During smartphone use, the probability of waking cortical slow wave bursts increased" www.biorxiv.org/content/10.1...

Sleep colleagues, please submit tonight to be considered for a short talk.

Under Trump, the NIH is giving fewer grants to fewer scientists. The grants awarded are smaller and scientists have less time to spend them. Projects in cancer, diabetes, aging, neurological disorder, and more are going unfunded. “Make America Healthy Again.”

Announcing the 5th International Sleep Replay Workshop (ISRW): March 6, 2026, Vancouver, prior to CNS. Program: poster session, discussion groups, 2 symposia, 7 short talks, & many opportunities to interact. Register by Dec 19 at isrw.bio.uci.edu All researchers focused on sleep/cognition welcome.

Nice Saturday morning read www.nature.com/articles/s41...

Registration is open. Please spread the word. The preliminary schedule will be up on the site later this month, and we've got an amazing line up!

#CNS2026 Satellite - International Sleep Replay Workshop, Friday, March 6, 2026, 8:00 am - 6:00 pm, Grand Ballroom CNS 2026 will be preceded by a one-day satellite event focusing on sleep and memory - the 5th International Sleep Replay Workshop. Learn more: isrw.bio.uci.edu @cnsnews.bsky.social

Why do we remember emotional events so vividly? Our new paper @nathumbehav.nature.com suggests that emotional arousal enhances memory by strengthening integration across large-scale brain networks! Led by the amazing @jadynpark.bsky.social & @ycleong.bsky.social! doi.org/10.1038/s415...

Pope Leo quotes Hannah Arendt: “The ideal subject of totalitarian rule is not the convinced Nazi or the convinced Communist, but people for whom the distinction between fact and fiction and the distinction between true and false no longer exist." www.cbsnews.com/chicago/news...

Vote for Eti! It takes 2min

For #FluorescenceFriday✨ Exploring the beauty of the locus Coeruleus using IF staining: neurons🔵 surrounded by glowing astrocytes🟢 embracing delicate blood vessels🔴, alongside striking pTau signals💗. A vivid reminder of the cellular complexity shaping brain health and disease. #LC #Neuroscience

Thanks for the shout out! The preprint is available: pubmed.ncbi.nlm.nih.gov/40894612/ Big kudos to our amazing first author, Tenzin Desel! We are looking fwd to further improve it in the review process

Please join us and spread the word

👇 #SleepPeeps Please repost to help me spread the word on this study. This is a very big commitment compared to most "online" studies... but I know there are some good participants out there on the interweb who what to help! 🙂👇

Fresh results now in bioRxiv! 🎉 We know about the function of NREM sleep for overnight memory consolidation. But what about REM sleep? We found that in aging, slow delta waves can intrude phasic REM periods, and this, is associated with worse overnight consolidation 🧠 (1/5) doi.org/10.1101/2025...

I'm honored to receive the continuous support of the Glenn Foundation for Medical Research and the American Federation for Aging Research. 💙🙏

We’re hiring! 🥳fully funded PhD and postdoc positions in human cognitive neuroscience @mpicybernetics.bsky.social M/EEG and brain stimulation methods to study timing/ prediction/ attention/ oscillations tinyurl.com/5dku4du9 @timingresforum.bsky.social @gtc-tuebingen.bsky.social please repost 🙏

New PNAS paper: "The entities enabling scientific fraud at scale are large, resilient, and growing rapidly" www.pnas.org/doi/full/10....

No one ever steps in the same movie twice. Anticipatory gaze 👁️ indicate episodic memory seconds before an event occurs. 🧠🐾 Very robust effects across both natural and crafted movies, and of course, after sleep! 😴. Out today in Communication Psychology: www.nature.com/articles/s44... Check it out!

Science doesn’t need to be pretty and go according to plan; it just needs to lead to a discovery. If doesn’t have to be done alone or together with someone else; there just needs to be a discovery. It doesn’t need to happen fast or slow; just as long as there’s a discovery, then everybody is happy.

Mapping cerebral blood perfusion and its links to multi-scale brain organization across the human lifespanhttps://dx.plos.org/10.1371/journal.pbio.3003277

Peripherial glucose levels associate with human sleep events:

Interesting, we will definetly take a look in our data.

The beta release of SPM-Python is out now! Amazing work by Johan Medrano @johmedr.bsky.social , Yael Balbastre, Yulia Bezsudnova @ybezs.bsky.social and other members of their team. A new era for SPM! #OHBM2025

Cute paper 🐈 www.cell.com/current-biol...

"SO-spindle coupling was linked to elevated activation in both the thalamus and hippocampus, alongside increased functional connectivity from the hippocampus to the thalamus and from the thalamus to the medial prefrontal cortex" doi.org/10.7554/eLif...

Unihemispheric sleep has its limits, a new study in birds: www-cell-com.libproxy.berkeley.edu/current-biol...

Rapid Eye Movements during Non-REM Sleep as a Marker of Alpha-Synucleinopathies doi.org/10.1002/mds....

Important message. TLDR; cite the software not the paper.

It occurred to me last night that microwaves are kinda like LLMs. Remember when they first came out, people bought microwave cookbooks, and special vented plastic cookware, and they were going to change the way we cooked and ate forever? Now we use them for defrosting mince, and reheating cold tea.

The great brain clearance and dementia debate www.nature.com/articles/d41...

Parallel processing of past and future memories through reactivation and synaptic plasticity mechanisms during sleep www.nature.com/articles/s41...

My lab is looking for postdocs interested in brain electrophysiology and circadian rhythms. Message me if interested!

Alzheimer’s disease patient-derived high-molecular-weight tau impairs bursting in hippocampal neurons: Cell www.cell.com/cell/fulltex...

Tired of spending months teaching every new student how to clean and analyze sleep EEG? 🧠💤 We were too. @labnir.bsky.social That's why we built SleepEEGpy- a simple open-source pipeline to make sleep EEG research faster, easier, and standardized! 👇 doi.org/10.1016/j.co...

New research from @mpiforbi.bsky.social on European jackdaws reveals that when sleep deprived they prioritize deep sleep, even at the cost of vigilance. This highlights the crucial role of deep sleep. Explore the research, published in @currentbiology.bsky.social: bit.ly/3EFeIKc