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Kepecs Lab @ WashU

@kepecslab.bsky.social
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Reposted by Kepecs Lab @ WashU
Blake Richards @tyrellturing.bsky.social · 26/06/2026
Nice break-down of a mechanism for attention to boost activity in neocortex (via basal forebrain projections). From @kepecslab.bsky.social and crew: www.cell.com/cell/abstrac... #neuroscience 🧪
cell.com
A disinhibitory basal forebrain-to-cortex projection supports sustained attention
A long-range inhibitory projection from the basal forebrain disinhibits the cortex to amplify sensory responses. This circuit encodes motivational salience and predicts moment-to-moment attentional pe...
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Kepecs Lab @ WashU @kepecslab.bsky.social · 24/02/2026
The labor market may resolve the instability fast
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Kepecs Lab @ WashU @kepecslab.bsky.social · 24/02/2026
How quickly you think we're moving toward that new equilibrium? Are what will be the leading indicators?
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Kepecs Lab @ WashU @kepecslab.bsky.social · 24/02/2026
or credential signal collapses and accelerates stratification because employers need cheap sorting signals (less optimistic unbundling)
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Kepecs Lab @ WashU @kepecslab.bsky.social · 24/02/2026
Interesting take! Agree AI kills homework-as-proof and take-home exams. But I don't see how that leads to optimistic unbundling. Schools could pivot to authentic assessment/competency transcripts...
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Reposted by Kepecs Lab @ WashU
Yao Chen @yaochen20.bsky.social · 18/02/2026
My department @WashUMedNeuro is recruiting Assistant or Associate Professor of neuroscience. Join us for great science and a collegial environment! facultyopportunities.wustl.edu/Posting/Deta... Please repost.
facultyopportunities.wustl.edu
Opportunity Details - Faculty Opportunities
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Kepecs Lab @ WashU @kepecslab.bsky.social · 21/01/2026
Why do you say that the number of grants will be 34% below FY24? The bill caps the *amount* NIH can obligate in FY2026 as "more than one year of a multiyear award" at the FY2025 level, and not the *number* of awards. So NIH cannot further expand this practice ie there should be MORE awards.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 21/01/2026
This is not my interpretation. What the bill language does is cap the *amount* NIH can obligate in FY2026 as "more than one year of a multiyear award" at the FY2025 level, and not the *number* of awards. Seems like they are limiting this so that there will be MORE new awards.
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Reposted by Kepecs Lab @ WashU
Neurodata Without Borders @nwb.org · 13/12/2025
Congrats, @analog-ashley.bsky.social and Victor Magdaleno-Garcia on publishing nwb4edu in JOSE! 🎉 This interactive textbook teaches how to access, analyze, and visualize NWB data from @dandiarchive.org, w/ lessons recreating classic neuroscience figures nwb4edu.github.io doi.org/10.21105/jose.00309
nwb4edu.github.io
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Kepecs Lab @ WashU @kepecslab.bsky.social · 25/11/2025
shockingly objective take 😉
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Kepecs Lab @ WashU @kepecslab.bsky.social · 09/10/2025
Congrats, amazing! Well deserved, and no surprise :-)
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Reposted by Kepecs Lab @ WashU
Aaron Milstein @neurosutras.bsky.social · 20/08/2025
Be my neighbor! @rwjms.bsky.social Neuroscience is hiring! jobs.rutgers.edu/postings/258...
jobs.rutgers.edu
Assistant or Associate Professor (Tenured or Tenure-Track)
The Department of Neuroscience and Cell Biology at Rutgers Robert Wood Johnson Medical School (RWJMS), the Rutgers Child Health Institute (CHI), and the Rutgers Brain Health Institute (BHI) seek appli...
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Kepecs Lab @ WashU @kepecslab.bsky.social · 21/07/2025
Important topic, high potency THC is a different game.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 17/07/2025
Interesting proposal. How about editors using LLMs not to generate reviews, but to flag those that look generic and light on insight? And also use LLMs to cross-check reviews for factual errors, since some reviews can be confidently wrong.
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Reposted by Kepecs Lab @ WashU
Alex Kwan @alexkwan.bsky.social · 17/07/2025
We worked so well as a team for the #GRCPsychedelics @vyazovskiy.bsky.social @viditavaidya.bsky.social @melissaherman.bsky.social and congrats to @theborislab.bsky.social and @mikaelpalner.bsky.social, who will be the future vice-chairs!
Chairs and vice chairs for the Psychedelics GRC
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Kepecs Lab @ WashU @kepecslab.bsky.social · 12/05/2025
Meet Area Postrema!
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Reposted by Kepecs Lab @ WashU
Gord Fishell @gordfishell.bsky.social · 04/05/2025
I will fly to anywhere in the United States on my own dime to talk to people about basic science! I encourage all of you, particularly senior scientists to make this commitment. If you are looking for material ask @karalmarshall.bsky.social She has put together an amazing basic talk!
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Kepecs Lab @ WashU @kepecslab.bsky.social · 05/05/2025
We'll miss you here Ilya! Exciting opportunity, congrats! Wishing you all the best for this next chapter!
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Reposted by Kepecs Lab @ WashU
Gord Fishell @gordfishell.bsky.social · 03/05/2025
Given all that is going on consider this quote from Bertram Russell's 1930 book The conquest of Happiness: “The man who can be interested in the structure of atoms or the way in which a beetle navigates, is likely to get a joy in life which no amount of success in the pursuit of power can give. ”
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
💔 that’s really tough, so sorry
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
Thanks CJ!
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
14/ Finally, this work wouldn’t have been possible without generous support from many funders. Special thanks to the NIH, especially NIMH, NIDA, and the NIH Pioneer Award—for making long-term, high-risk neuroscience like this possible. 🧵🔚
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
13/ This builds on decades of work linking inflammation to fatigue, depression, and motivation loss. We’re picking up that thread, now with a defined brain circuit in play, a step toward circuit neuro-immunology. #Inflammation #Depression #IL6 #Cancer #Cachexia #NeuroImmunology
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
12/ This project took a *huge* team, spanning neuroscience, immunology, and cancer. Grateful to co–first authors Aelita Zhu, Sarah Starosta, co–senior authors Marco Pignatelli & Tobias Janowitz & ours labs & all our amazing collaborators including @kravitzlab.com & Pavel Osten.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
11/ We’re also excited about our effort-based tasks to measure motivation. Grounded in behavioral economics, they’re designed for cross-species computational psychiatry. We’re now adapting them for humans to bridge physical disease and psychiatric symptoms.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
10/ Our work reframes cachexia: it’s not just body wasting, it inherently involves the brain. Chronic inflammation activates a neural circuit that suppresses motivation—likely adaptive in acute illness but harmful when chronic, showing how physical disease directly causes psychiatric symptoms.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
9/ We also used an IL-6–blocking antibody in mice—similar to FDA-approved drugs for rheumatoid arthritis. Given early, it improved survival. Given late, it still rescued apathy-like behavior. This points to a promising, translatable way to treat apathy in advanced disease.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
8/ The circuit insights let us reverse apathy without stopping cancer: — Knockdown of IL-6 receptors in area postrema — Ablation of ArP→PBN neurons — Boosting dopamine via optogenetics or dopamine agonist cocktail injected in nucleus accumbens. Motivation was rescued even in late-stage disease.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
7/ We used a patch foraging task with depleting rewards designed to measure effort sensitivity—grounded in behavioral economics. As cachexia progressed and IL-6 rose, dopamine in the nucleus accumbens fell. Mice gave up faster, even when rewards were still available.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
6/ We mapped fill the circuit: IL-6 activates the area postrema neurons that project parabrachial nucleus and then to substanta nigra pr, which inhibits dopamine release in the nucleus accumbens. Optogenetic activation of ArP→PBN mimicked inflammation, rapidly suppressing motivation.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
5/ To find the cause, we ran a cytokine screen and brainwide cFos mapping. The cytokine IL6 increased with cachexia. Most brain regions were suppressed, but a few lit up—most notably the area postrema, a circumventricular organ outside the BBB that could sense circulating IL-6.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
4/ We tested in mice with cancer (C26 colon adenocarcinoma) and saw a striking loss of motivation. As cachexia set in, effort sensitivity increased in two tasks—but mice still liked sweet rewards, showed no despair, and retained capacity to move. Apathy-like behavior.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
3/ Apathy in cancer cachexia is often dismissed as a psychological reaction to physical decline. But what if it’s part of the disease process itself—driven by inflammation acting on the brain?
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
2/ Cachexia affects ~80% of late-stage cancer patients. It’s a wasting syndrome with severe weight/muscle loss despite eating. But it also drains the mind—patients lose motivation, withdraw from loved ones, and struggle with treatment. Apathy and fatigue take over.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 11/04/2025
1/ Why do patients with late-stage cancer lose motivation & sink into apathy? 🔥 Our new Science paper shows chronic inflammation activates a cytokine-sensing brain circuit that lowers motivation. Huge team effort: Aelita Zhu, Sarah Starosta, Pignatelli & Janowitz labs! 🧵 🔗 doi.org/10.1126/scie...
doi.org
A neuroimmune circuit mediates cancer cachexia-associated apathy
Cachexia, a severe wasting syndrome associated with inflammatory conditions, often leads to multiorgan failure and death. Patients with cachexia experience extreme fatigue, apathy, and clinical depres...
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Kepecs Lab @ WashU @kepecslab.bsky.social · 10/04/2025
convergence!
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Kepecs Lab @ WashU @kepecslab.bsky.social · 07/04/2025
Looking forward to reading it! Spot on
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Kepecs Lab @ WashU @kepecslab.bsky.social · 06/04/2025
And @constantinoplelab.bsky.social and @carlosbrody.bsky.social found a functionally similar lOFC subpopulation in a different task, suggesting this is a conserved circuit motif: elifesciences.org/articles/70129
elifesciences.org
Subpopulations of neurons in lOFC encode previous and current rewards at time of choice
A distinct subpopulation of neurons in the rat orbitofrontal cortex encodes reward history at the time of choice, providing a potential neural substrate by which reward history may influence decisions...
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Kepecs Lab @ WashU @kepecslab.bsky.social · 06/04/2025
We found that orbitofrontal to striatum projection neurons preferentially sustain information about prior outcomes between trials: www.nature.com/articles/s41...
nature.com
Frontal cortex neuron types categorically encode single decision variables - Nature
Frontal cortex neurons can be grouped into categorical response types corresponding to particular decision variables, such as reward size, decision confidence, or value, and individual variables may b...
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Kepecs Lab @ WashU @kepecslab.bsky.social · 06/04/2025
So glad you're doing this, your voice is what the field needs! What I wish more people knew: pharma gave up on psychiatry because the science wasn’t ready. Finally, we can causally link brain circuits to symptoms. Real mechanism-based treatments are possible *if* we fund the science to get there.
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Reposted by Kepecs Lab @ WashU
Dr. Kat Napaaqtuk❄️ @napaaqtuk.bsky.social · 13/03/2025
I graduated high school in 1990. For this year's graduates, this music is to them what 60's music was to me when I was their age. Wild.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 09/03/2025
We sat in the opposite corner! In this end it turn into a great game.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 06/03/2025
Wow, that was fast… faster than their mouse delivery times.
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Reposted by Kepecs Lab @ WashU
Farshid Guilak @farsh-g.bsky.social · 05/03/2025
We’ve created a new field called “chronogenetics”: controlling gene expression with the cell’s internal clock! Lara Pferdehirt & Anna Damato made living implants that sync to the body & automatically deliver biological drugs on a 24 hr cycle. www.nature.com/articles/s41...
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Kepecs Lab @ WashU @kepecslab.bsky.social · 06/03/2025
Important work by my colleagues @robgereau.bsky.social & team! A new non-opioid chronic pain treatment, a peripherally restricted CB1 agonist without psychoactivity or tolerance.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 06/03/2025
Congrats to @michellemonje.bsky.social and F Winkler on the Brain Prize! Well deserved recognition for groundbreaking work in cancer neuroscience! Such a cool field, exciting, with important implications for disease and just getting started!
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Kepecs Lab @ WashU @kepecslab.bsky.social · 06/03/2025
Hopefully the NIH reform will include mechanisms to improve CSR & reviewer accountability.
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Kepecs Lab @ WashU @kepecslab.bsky.social · 06/03/2025
Congratulations to Andrew Barto and Richard Sutton on the well-deserved Turing Award! Their groundbreaking work in reinforcement learning has had an enormous impact across AI, neuroscience, robotics, and beyond. The ripple effects are still unfolding!
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Reposted by Kepecs Lab @ WashU
Cat Hicks @grimalkina.bsky.social · 08/02/2025
Having funded teams/contracts that required six figure+ funds a few times now, these numbers SOUND really huge in isolation to normal folks but they're not! Don't make floating numbers! I like to say things like this: "A cancer lab is basically a small business, with many jobs created by each grant"
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Kepecs Lab @ WashU @kepecslab.bsky.social · 08/02/2025
Project 2025: 🔹 Break NIH’s monopoly on research direction 🔹 Shift NIH grant funding to states via block grants 🔹 Keep NIH funding, but at a reduced, “modest” level Buckle up!!
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