(((Dr Hannah Wirtshafter))) 🔬
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aheadofthenerve.bsky.social
(((Dr Hannah Wirtshafter))) 🔬
@aheadofthenerve.bsky.social
Proud scientist. BRAIN K99/R00. HPC experimental & computational systems neuro. Ephys4life.
Postdoc @NUFeinbergMed w @Disterhoftlab & @SaraASolla.
PhD @MITbiology w/ Matt Wilson
🔬🧠🐀🌈
Pinned
🚨 New #Blueprint🚨 Ever wondered how the HPC supports learning across different contexts? My newest, a combo of experimental and comp neuro, w @SaraASolla & @DisterhoftLab, uncovers a 'universal' memory code in the HPC—consistent across animals and environments! 🧵👇
www.biorxiv.org/content/10.1...
A universal hippocampal memory code across animals and environments
How learning is affected by context is a fundamental question of neuroscience, as the ability to generalize learning to different contexts is necessary for navigating the world. An example of swift co...
www.biorxiv.org
Reposted by (((Dr Hannah Wirtshafter))) 🔬
We had a lot of fun doing these experiments! Theta sweeps in MEC and internal direction signals in parasubiculum track moving objects during pursuit and reverse during backward movement. Simultaneously recorded HD cells in other areas remain locked to head direction across behaviors:
January 28, 2026 at 3:47 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
The hippocampal map has its own attentional control signal!
Our new study reveals that theta #sweeps can be instantly biased towards behaviourally relevant locations. See 📹 in post 4/6 and preprint here 👉
www.biorxiv.org/content/10.6...
🧵(1/6)
Attention-like regulation of theta sweeps in the brain's spatial navigation circuit
Spatial attention supports navigation by prioritizing information from selected locations. A candidate neural mechanism is provided by theta-paced sweeps in grid- and place-cell population activity, which sample nearby space in a left-right-alternating pattern coordinated by parasubicular direction signals. During exploration, this alternation promotes uniform spatial coverage, but whether sweeps can be flexibly tuned to locations of particular interest remains unclear. Using large-scale Neuropixels recordings in freely-behaving rats, we show that sweeps and direction signals are rapidly and dynamically modulated: they track moving targets during pursuit, precede orienting responses during immobility, and reverse during backward locomotion — without prior spatial learning. Similar modulation occurs during REM sleep. Canonical head-direction signals remain head-aligned. These findings identify sweeps as a flexible, attention-like mechanism for selectively sampling allocentric cognitive maps. ### Competing Interest Statement The authors have declared no competing interest. European Research Council, Synergy Grant 951319 (EIM) The Research Council of Norway, Centre of Neural Computation 223262 (EIM, MBM), Centre for Algorithms in the Cortex 332640 (EIM, MBM), National Infrastructure grant (NORBRAIN, 295721 and 350201) The Kavli Foundation, https://ror.org/00kztt736 Ministry of Science and Education, Norway (EIM, MBM) Faculty of Medicine and Health Sciences; NTNU, Norway (AZV)
www.biorxiv.org
January 28, 2026 at 10:03 AM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
We are excited to announce that registration is open for the 2026 Neural Mechanisms of Acoustic Communication Gordon Research Conference. The preliminary program is now live: www.grc.org/neural-mecha...

We invite everyone to apply! See you @ Sunday River, Maine, May 31-June 5, 2026.
January 27, 2026 at 5:45 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
The US lost 10,109 doctoral-trained experts in science and related fields year, in institutes ranging from the National Institutes of Health to NASA.

This is like a prefrontal lobotomy to society. The US government has drained their own brains.
www.science.org/content/arti...
January 28, 2026 at 7:26 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
Feb. 1 is the deadline to apply for the Summer Workshop on the Dynamic Brain in the San Juan Islands!

Please share with PhD students and postdocs interested in developing their computational neuroscience skillsets.

🔗 https://alleninstitute.org/events/summer-workshop-on-the-dynamic-brain-2026/
Summer Workshop on the Dynamic Brain 2026
The Summer Workshop on the Dynamic Brain is an intensive, project-based residential course with a focus on the neurobiology of sensory processing, coding, and neural population dynamics.
alleninstitute.org
January 27, 2026 at 6:06 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
Infantile #amnesia limits our recall of early-life memories, but what is its cellular basis? @tjryan.bsky.social &co reveal that transient #microglial activity during postnatal development regulates infant #memory persistence & retrieval in mice @plosbiology.org 🧪 plos.io/4a0SoGH
January 27, 2026 at 5:59 PM
OMG!!!
BREAKING Greg Bovino has been removed as Border Patrol "commander at large" and will return to El Centro Calif, where he is expected to retire soon. A stunning turnaround after Pretti killing. Bovino's traveling blue city crackdown is over www.theatlantic.com/politics/202...
Gregory Bovino Gets Demoted
The Border Patrol chief was the public face of a traveling immigration crackdown on cities governed by Democrats.
www.theatlantic.com
January 27, 2026 at 12:45 AM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
🚨 New from me: Grant review at more than half of NIH's institutes could be frozen by the end of the year.

That's because crucial NIH grant-review panels are slated to be empty at those institutes by Jan 2027.

A wonky bureaucratic problem with big implications.

A short 🧵
Exclusive: key NIH review panels due to lose all members by the end of 2026
Thirteen of the agency’s advisory councils, which must review grant applications before funding is awarded, are on track to have no voting members.
www.nature.com
January 22, 2026 at 7:46 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
This is due tomorrow. It's a really simple form with just a few questions. If you interact with NSF at all you should fill it out. #neuroskyence #academia #psychscisky #compneuro #ccai
NSF is seeking public input on its FY 2026-2030 NSF Strategic Plan. Specifically, they would appreciate input on the following questions:
January 26, 2026 at 6:30 PM
made me cry
Rest in Peace Alex Jeffrey Pretti🙏🏾 The VA ICU Nurses send him off right 💔
January 26, 2026 at 8:09 PM
(gift article) MEHHHHHHHHHHH
E.P.A. Promises a Ban on Animal Testing by 2035
www.nytimes.com
January 22, 2026 at 11:31 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
So excited to be co-organizing this!! If you're in the Chicago area, I highly recommend you join us for this 2.5 day workshop -- we have stellar speakers talking about all sorts of theory and biology. Make sure to apply before the deadline if you are interested!
Join a community of early-career researchers across disciplines inspiring new avenues of collaboration across the experiment-theory spectrum!

Applications for the ‘Curiosity-Driven Dialogue and Collaboration Between Experiment and Theory’ workshop are due TOMORROW, January 23rd

Application 🔗 ⬇️
January 22, 2026 at 8:46 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
I NEED EVERYONE YO UNDERSTAND THAT THE BUDGET IS NOT THE ISSUE. THIS MONEY IS ABOUT TO BE SPENT ON UNETHICAL PSEUDOSCIENCE.
RFK Jr. appointee Kirk Milhoan has just clearly stated, out loud, that he wants to experiment on the people of the United States by seeing what happens as vaccination coverage plummets and infectious diseases spread.
January 22, 2026 at 8:32 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
In a new special issue, Science’s news reporters take stock of the impacts that Trump's year in office has had on research and the scientific workforce, forecast what lies ahead, and assess the scientific community’s efforts to mitigate or reverse the harms. https://scim.ag/4pPtks0
January 22, 2026 at 7:05 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
Trump has been in office for one year. We at @nature.com did a deep dive looking at the administration's disruption of science in numbers.

Take a look—the numbers are staggering. By me, @dangaristo.bsky.social, Jeff Tollefson, @kimay.bsky.social, & help from @noamross.net @scott-delaney.bsky.social
US science after a year of Trump: what has been lost and what remains
A series of graphics reveals how the Trump administration has sought historic cuts to science and the research workforce.
www.nature.com
January 20, 2026 at 6:08 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
Just spoke to The Hill about how the dismantling of the NIH is impacting science in America. We still face a cliff of unfathomable heights, w easily 1000+ labs poised to close in the next year due to funding ending. A generation of young scientists lost because there is nowhere for them to train.
January 20, 2026 at 4:03 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
If you have tenure consider publishing less... doi.org/10.1038/d415...
I’m going to halve my publication output. You should consider slow science, too
If we don’t slow down, the research enterprise is going to crash, argues Adrian Barnett.
doi.org
January 19, 2026 at 9:59 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
Starting 2026 with a thread a very recent manuscripts at Ryan Lab @tcddublin.bsky.social @tbsi-tcd.bsky.social

"Extinction and subsequent updating of innate fear responses to a visual looming stimulus rely on hippocampus-dependent mechanisms"
journals.plos.org/plosbiology/...

@PLOSBiology
Extinction and subsequent updating of innate fear responses to a visual looming stimulus rely on hippocampus-dependent mechanisms
How does the brain balance innate responses with adaptive learning when reacting to threats? This study shows that repeated exposure to looming stimuli reduces innate defensive responses via hippocamp...
journals.plos.org
January 2, 2026 at 4:34 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
Full survey results show American public have high levels of confidence in scientists while revealing some partisan differences (including on how to fund science), but statements asserting lost trust should be read instead as intentional efforts to degrade trust.

www.pewresearch.org/science/2026...
January 16, 2026 at 3:25 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
Really thrilled that this paper led by @neurozz.bsky.social is now published in its final version in @elife.bsky.social!!

This is a memory-focused (as opposed to RL-focused) account of the detailed characteristics of forward and backward awake and sleep replay!

elifesciences.org/articles/99931
A unifying account of replay as context-driven memory reactivation
A context-driven memory model simulates a wide range of characteristics of waking and sleeping hippocampal replay, providing a new account of how and why replay occurs.
elifesciences.org
January 15, 2026 at 1:57 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
Some analysis from @jeff-tollefson.bsky.social, @dangaristo.bsky.social and me

US science budgets are being finalized — and the cuts likely won't be as dramatic as Trump would have wanted. But political appointees will now have a big say in how that funding is spent.

www.nature.com/articles/d41...
January 14, 2026 at 6:58 PM
how are we dealing with the horrors today? ... me? not doing so great
January 13, 2026 at 7:48 PM
Reposted by (((Dr Hannah Wirtshafter))) 🔬
⚛️ The U.S. “has been investing in science for 80 years, and could tear a lot of that down with the stroke of one signature,” the CEO of @aaas.org told SciFri a year ago. Here’s what's happening with federal funding for science now.
One Year Into Trump’s Term, Where Does Science Funding Stand?
The CEO of AAAS is cautiously optimistic about federal funding for science, even as uncertainty makes research challenging.
buff.ly
January 13, 2026 at 6:51 PM
Who else has trouble relaxing because they feel like they should always be learning something? On a totally unrelated note what are everyone’s favorite (academic) computational or theoretical neuroscience books that would work well as audio books?
January 12, 2026 at 6:36 PM