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karihoffman.bsky.social
neuroscientist @vanderbilt studying neural circuit+population rules for creating and deploying knowledge. computational neuroethology.
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Do everyone a favor and read this. Then act. 🧠📈🧪

#preprint: We mapped the structure and function of olfactory bulb circuits with in vivo 2-photon microscopy and synchrotron #Xray holographic nanotomography. doi.org/10.1101/2025... @yuxinzhang.bsky.social @andreas-t-schaefer.bsky.social @apacureanu.bsky.social @crick.ac.uk @esrf.fr

👀Come for the 3D microscopy porn, stay for the ensemble coding principle. I will never not like the olfactory circuit organization. Here’s a punchline post in the thread:

Stimulating vosstacular stim work, and another case of targeting lateral temporal lobe (not medial) for stim in humans. ❓🙋🏻‍♀️ to Joel/Jim: you did parietal stim before, so would you pick LTL or Par. for therapeutic target to address “MTL”ish memory impairment? Or neither? 🧠 📈 🧪

In spiking neural networks, neurons communicate - as in the brain - via short electrical pulses⚡(spikes). But how can we formally quantify the (dis)advantages of using spikes? 🤔 In our new preprint, @pc-pet.bsky.social and I introduce the concept of "Causal Pieces" to approach this question!

Nice approach to “what happens in the wake of a ripple?”

Yay, Canada! 🇨🇦🎉♥️ Elbows up and keep your science strong www.cbc.ca/news/politic...

'Exodus of the bright minds', my interview for @spiegel.de "The Trump administration is harassing science, cutting funding to universities, and intimidating researchers and students with expulsions. Four scientists share why they want to leave the country." #SpeakOut www.spiegel.de/wissenschaft...

I wrote something up for AI people who want to get into bluesky and either couldn't assemble an exciting feed or gave up doomscrolling when their Following feed switched to talking politics 24/7.

Did they really just go from freezing memories to frozen memories 🥶? @tjryan.bsky.social you need a trip to the tropics 🌴. Impressive study, broad implications for general physiology 🧪

Leaner and meaner than a transformer? B/c #BTSP? Ok correlation-based cognitive map learner (CCML), you have my attention. 🧠📈🤖

Rategory learning: antidromic systems consolidation. Not really, but it’s pithy. 🧠📈

Excited to announce the Madison Symposium on Memory and Control! postlab.psych.wisc.edu/msmc/: @paller.bsky.social, @karihoffman.bsky.social, Joel Voss, @charan-neuro.bsky.social , Thilo Womelsdorf, @earlkmiller.bsky.social . Best talk titles ever! (vote for your favorite here 🤗)

At least 28 Alzheimer's-related research projects, totaling $223.7 million, had been terminated by #NIH as of April 11. #Alzheimers #dementia #science #NeuroSky #GeriSky

Trump proposes massive NIH budget cut and reorganization www.science.org/content/arti...

Best takedown I've read on the war on science. It matters to make these points. I hope some affected editors-in-chief read this before making extremely consequential decisions next week.

🧠📈

Yup - or single-purpose/reductionist [models of] behaviors when the system must manage multiple goals IRL. If we race to the bottom with low-D tasks, should we then marvel at how scalar/categorical the response? elifesciences.org/articles/908...

Ok so yeah, this has quickly become the #1 misunderstanding about the canceled grants the grants are not “subsidies” or “entitlements” to Harvard or Princeton or whatever they aren’t going into universities’ endowments they are competitive contracts won by these universities to do research

🌎❤️‍🩹More US own-goals: undermining research by threatening int’l ties, from how we recruit the best students to procurement of specialized parts. This study was led by the gutsy, thoughtful @sabbaspoor.bsky.social using 🇬🇧 Cambridge Neurotech and 🇨🇦Brainsight/Rogue Rsh parts. In the before times.

Our new paper is out in Science. What is the synaptic plasticity rule in the brain, we asked. It turns out there are multiple, even within individual neurons. Congrats Jake! www.science.org/doi/10.1126/...

Multiple learning rules in different parts of dendrites. Definitive goodbye to hoping the brain is simple...?? 😯 www.science.org/doi/10.1126/...

Does your research involve comparing experimental conditions? Then our latest publication is for you: We developed generalized contrastive PCA (gcPCA), a tool for comparing high-dimensional datasets. 🧠📊 doi.org/10.1371/journal.pcbi.1012747 This tool was born out of necessity, here is the story. 🧵 1/

Explore top neuroscience meetings and events. Filter events by topic, and see upcoming webinars compiled by @worldwideneuro.bsky.social. Are you organizing a neuroscience conference? Share it with us at [email protected] #neuroskyence www.thetransmitter.org/events/?utm_...

I wrote a little digest + tribute to an article that shaped my career: Sadtler et al Neural constraints on learning! (and also managed to sneak in a shout out to another one) Read for free here: rdcu.be/eg5To Thanks to the editors for the invite and input!