Reposted by Catrina HackerAnn Kennedy @antihebbiann.bsky.social · 22/09/2026Preprint time! This is a cool one. Complex systems, be they neural nets, interacting genes, or power grids, can produce diverse dynamics-- things like point attractors, limit cycles, and chaos. The dynamic landscape you get depends on how elements interact. But those interactions can also change! 28125
Reposted by Catrina HackerCheng Xue @cxue.bsky.social · 15/09/2026Our work recently online in Nature Neuroscience: a neural reason why we err more when juggling tasks nature.com/articles/s41593-026-02430-w 🧵 Switching between tasks for different goals is an important form of cognitive flexibility. 13517
Reposted by Catrina HackerMarlene Cohen @marlenecohen.bsky.social · 10/09/2026Now out in Nature Neuroscience: fantastic work by @cxue.bsky.social, Sol Markman et al who discovered a neural reason that performance suffers under cognitive load: “Feature interference underlies a neuronal basis for the behavioral cost of task uncertainty”. www.nature.com/articles/s41... 🧪🧵1/nature.comFeature interference underlies a neuronal basis for the behavioral cost of task uncertainty - Nature NeuroscienceUsing a combined approach of monkey electrophysiology, artificial neural networks and human psychophysics, Xue et al. show that neuronal interference from irrelevant information underlies behavioral e... 312040
Reposted by Catrina HackerYasmine El-Shamayleh @elshamayleh.bsky.social · 26/08/2026Excited to share the lab’s first publication, co-led by talented postdoc Chuyi Su @chuyisu.bsky.social We leveraged cell type-specific optogenetics in the macaque cerebral cortex to elucidate the role of excitatory and inhibitory neurons in visual form processing. www.nature.com/articles/s41...nature.comOptotagging in primate cortex uncovers excitatory and inhibitory neuron specializations in form vision - Nature CommunicationsThis study leverages cell type-specific optogenetics in the monkey cerebral cortex to elucidate the unique functional contributions of excitatory and inhibitory neurons in visual form processing. The ... 36317
Reposted by Catrina HackerMarlene Cohen @marlenecohen.bsky.social · 25/08/2026Now out at PNAS! The final version includes a smart analysis suggested by a reviewer showing that biomarkers collected in blood track our neural population metrics. A very exciting connection between basic neurophys and translational approaches. Congrats to all! www.pnas.org/doi/10.1073/...pnas.orgPNASProceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans... 65220
Reposted by Catrina HackerSeth Koslov @skoslov.bsky.social · 19/08/2026New preprint! Posterior cingulate is often linked to memory in humans but decisions in monkeys yet there's little consensus about its functional neuroanatomy. We recorded LFPs+single units in humans during matched value and memory based decisions, finding convergence in dorsal, but not ventral, PCC.biorxiv.org 33312
Reposted by Catrina HackerPenn NeuroKnow 🧠 @pennneuroknow.bsky.social · 18/08/2026If you've heard of homing pigeons, you may know that historically they were used as messenger birds. But have you ever wondered how pigeons know where to go? Turns out, pigeons may use magnetic fields to navigate! Learn more in this week's post by Andrew Nguyen: pennneuroknow.com/2026/08/18/m...pennneuroknow.comMagnetic compasses help pigeons navigate in the darkFinding your way home in the dark can be challenging, but pigeons have developed surprising navigational strategies to sense magnetic fields to make it home safe. 041
Catrina Hacker @catrinahacker.bsky.social · 17/08/2026This is really careful and compelling work by Kara examining how the brain adapts its decision-making processes to handle differing levels of uncertainty. It's a must read for anyone interested in the neural correlates of decision-making (and/or fans of MT)! #neuroskyence 074
Reposted by Catrina HackerStories of WiN @storiesofwin.bsky.social · 05/08/2026Our latest profile is here! Dr. Lea Duncker (@leaduncker.bsky.social) uses statistical and theoretical approaches to study the neural basis of flexible behavior. Follow the link below to learn more! #StoriesOfWiN #WomenInNeuroscience www.storiesofwin.org/profiles/202...storiesofwin.orgDr. Lea Duncker — Stories of WiNuses statistical and theoretical approaches to study the neural basis of flexible behavior 05115
Reposted by Catrina HackerIlenna Jones @ilennaj.bsky.social · 31/07/2026What does synapse position buy a neuron? We trained a dendritic network to place its own synapses on a covariance task. It clustered correlated inputs onto shared branches, and shuffling that placement destroyed performance while every weight stayed intact. Preprint: arxiv.org/abs/2607.24503 🧵-->arxiv.orgSynaptic clustering emerges from learning and supports covariance discriminationFunctional synapse clusters (FSCs) are synapses with correlated presynaptic activity that are colocalized on the same neuronal dendritic branch. FSCs have been observed after learning in cortical and ... 33617
Reposted by Catrina HackerKari Hoffman @karihoffman.bsky.social · 30/07/2026📣New paper! How does the sleeping brain help us to integrate new experiences while managing memories from the past? For his PhD work, @sabbaspoor.bsky.social recorded hippocampal ensembles in freely moving monkeys and found something unexpected. 🧵1/n www.nature.com/articles/s41... 🧪🧠📈👩🔬#OpenAccessnature.comExperience reorganizes content-specific memory traces in macaques - Nature NeuroscienceIn macaques, old memories, relative to new ones, are supported by more stable and interconnected cell assemblies. New-biased and old-biased assemblies reactivate during overnight sleep and can sometim... 410340
Catrina Hacker @catrinahacker.bsky.social · 29/07/2026I've loved watching this project develop over the last few years and I'm so excited to see @jacob-a-parker.bsky.social share it with the world! Highly recommended to anyone thinking about human behavior or interested in decision making/inference. #compneurosky #neuroskyence 0111
Reposted by Catrina HackerVlad Ayzenberg @vayzenb.bsky.social · 22/07/2026Excited to share our review in @cp-neuron.bsky.social with @lauriebayet.bsky.social and @mickbonner.bsky.social! We describe how implementing principles from child development can advance the mechanistic plausibility and capacities of AI models We packed A LOT into this review, here's a quick 🧵 16829
Reposted by Catrina HackerDhairyya Singh @dhairyyasingh.bsky.social · 09/07/2026Out today! Our (w/ @annaschapiro.bsky.social) review of the alignment between the C-HORSE model and the hippocampal structure learning literature. We find strong congruence with the model's key principles and propose several avenues for future investigation!royalsocietypublishing.orgEvidence for complementary learning systems within the hippocampusAbstract. Decades of research have established the hippocampus as central to episodic memory, but growing evidence suggests that it also contributes to str 23311
Reposted by Catrina HackerMarlene Cohen @marlenecohen.bsky.social · 07/07/2026Now out at PNAS - congratulations to Ramanujan Srinath and the team! Ram's ability and willingness to connect all these data, models, and ideas has changed my thinking/interpretation of many findings. I suspect I will keep learning from this study for a long time. www.pnas.org/doi/10.1073/...pnas.orgThe structure of correlated variability reflects task-relevant information in sensory neurons | PNASShared trial-to-trial variability across sensory neurons is reliably reduced when perceptual performance improves, yet this variability is low dime... 13815
Reposted by Catrina HackerLiu, Shuze @liushuze.bsky.social · 06/07/2026Do people solve hard problems by first building a mental model, then searching for the best solution? With @gershbrain.bsky.social, our new manuscript suggests a different route: people often start by retrieving cached solutions, and scaffold representations around them. osf.io/preprints/ps... 14319
Reposted by Catrina HackerMarlene Cohen @marlenecohen.bsky.social · 06/07/2026To me, this is bigger than Alzheimer's disease. Neuronal population activity sits between biology and behavior. If we understand that level well enough, systems neuroscience can do more than explain behavior. It can diagnose, track progression, and maybe even identify treatment targets. 9/ 1143
Reposted by Catrina HackerMarlene Cohen @marlenecohen.bsky.social · 06/07/2026I have always believed that ideas from basic systems neuroscience could eventually help people. But for years that felt more like hope than reality. But look! This is one of the most personally satisfying papers my lab has produced because we’re getting there. www.biorxiv.org/content/10.6... 🧪🧵 1/ 317854
Reposted by Catrina HackerGouki Okazawa @handle.invalid · 03/07/2026New reviewed preprint from @elife.bsky.social! Led by Han Zhang, we tested monkeys on 10+ object concept classification tasks and compared their behavior to humans and deep networks. Monkeys learned diverse categorization rules fast... elifesciences.org/reviewed-pre...elifesciences.orgA battery of image classification challenges reveals shared and distinct object categorization behavior across monkeys, humans, and deep networks 181
Catrina Hacker @catrinahacker.bsky.social · 03/07/2026A huge congrats to @simonbohn.bsky.social for leading the charge on this substantial update to our paper exploring how visual cortex and medial temporal lobe contribute to the transformation from seeing to remembering. 🧠🟦 🧠💻 090
Reposted by Catrina HackerYe Lab @liye-tsri.bsky.social · 02/07/2026Our new preprint is out!! The human brain runs on ~20 watts. Computers and modern AI systems require vastly higher energy. This gap raises a fundamental question: how does the brain compute so efficiently? In our new study, we take a critical step toward measuring and understanding this directly 1/3 56621
Catrina Hacker @catrinahacker.bsky.social · 29/06/2026A must read for anyone interested in hippocampal ripples from an amazing team! 🧠🟦 180
Reposted by Catrina HackerErica Busch @elbusch.bsky.social · 11/06/2026Our new paper is out this week in Nature Neuroscience! www.nature.com/articles/s41... We built a BCI that works with the brain's natural geometry — and we found that people could learn to play a video game with their brains in <1 hr of training. This efficiency is groundbreaking & here's why:nature.comHuman learning of noninvasive brain–computer interfaces via manifold geometry - Nature NeuroscienceBusch et al. use nonlinear neural manifolds to help humans gain rapid control over a noninvasive brain–computer interface, allowing them to learn how to play a video game with real-time fMRI neurofeed... 419777
Reposted by Catrina HackerMarlene Cohen @marlenecohen.bsky.social · 24/06/2026Congratulations to fantastic postdoc Ramanujan Srinath and former star tech Martyna Czarnik on their new paper on the neural basis of flexible generalization in Nature Communications today! 🥳 Stable readout of visual representations mediates flexible generalization www.nature.com/articles/s41... 2253
Catrina Hacker @catrinahacker.bsky.social · 23/06/2026It is bittersweet to share the last post I will write for @pennneuroknow.bsky.social. It has been a privilege to work with our writers over the past several years and to explore topics from dinosaur brains to dementia. If you don't already, follow their page for updates on new posts! 1102
Reposted by Catrina Hackerpineurosci.bsky.social @pineurosci.bsky.social · 22/06/2026New work on the effects of psychedelics on hierarchical cortical propagations out in PNAS! www.pnas.org/doi/10.1073/... Counter to our expectations, psychedelics attenuated bottom-up propagations into the Default Mode Network across substances and species. Thread below:pnas.orgPNASProceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans... 11810
Reposted by Catrina HackerScience Magazine @science.org · 19/06/2026Do animals perceive time differently from humans? Science chats with @singhal.bsky.social—a researcher whose team is using “timescapes” to understand how nonhumans experience the world. scim.ag/4xFs4wMscience.orgDo animals perceive time differently from humans?Science chats with a researcher whose team is using “timescapes” to understand how nonhumans experience the world 03813
Reposted by Catrina HackerMark Histed @markhisted.org · 11/06/2026Neuroscientist here, who has talked about the US losing science ground to other countries: The biggest problem for generating future cures for brain diseases is the ongoing utter destruction of US basic neuroscience. It’s not about regulation. 16540159
Reposted by Catrina HackerCheng Xue @cxue.bsky.social · 01/06/2026Excited to share our new review in Trends in Neuroscience with Gouki Okazawa @gouki-okazawa.bsky.social : "The 'neat' and 'messy' in task-dependent neural geometry and computation" where we reviewed what we know about the 'task-manager' in the brain. A thread 👇 13212
Reposted by Catrina HackerPenn NGG @pennngg.bsky.social · 01/06/2026#NGG is proud to present our next Thesis Defense given by @catrinahacker.bsky.social of the @nicolecrust.bsky.social Lab! Please join us in person or virtually (DM us for the link) on 6/2. Best of luck, Catrina! #PhAlmostDone 🥳 092
Reposted by Catrina HackerGouki Okazawa @handle.invalid · 31/05/2026New review with Cheng Xue at U Chicago @cxue.bsky.social in Trends Neurosci@cp-trendsneuro.bsky.social! We discuss the neural geometry of task-dependent computation: disentangled encoding, RNN modeling, switch cost, etc. www.cell.com/trends/neuro...cell.comThe ‘neat’ and ‘messy’ in task-dependent neural geometry and computationTo solve diverse real-world tasks, the brain must flexibly switch between task rules and adjust computations. Recent advances in analyzing neural data and modeling neural networks have revealed their ... 06318
Reposted by Catrina HackerMark Histed @markhisted.org · 26/05/2026The research that led to this miracle drug started more than five decades (!) ago. Basic science research has massive payoffs but they are often very long-term. As a society, we invest in basic research for our kids and grandkids. 2308104
Reposted by Catrina HackerLing-Qi Zhang @lingqiz.bsky.social · 18/05/2026It’s very fun to analyze other people’s data for your favorite model and theory, but data reuse actually takes a huge amount of effort. We tested if current agentic AI can help with data reuse. Conclusion: it definitely can, but requires careful human supervision. #AIforScience #compneuro #neuroAI 094
Reposted by Catrina HackerKristin Branson @kristinmbranson.bsky.social · 18/05/2026New preprint with @lingqiz.bsky.social: Neurodata Without Boredom: Benchmarking Agentic AI for Data Reuse arxiv.org/abs/2605.12808 1/10 24718
Reposted by Catrina HackerDavid Ashbrook @davidashbrook.bsky.social · 13/05/2026Interesting! doi.org/10.1242/dmm.... "Debates about animal research & alternatives are often framed as a contest between old and new approaches. This framing is both misleading and counterproductive. In practice, modern biomedical research is increasingly characterised by methodological pluralism"doi.orgWhy in vivo models of disease remain indispensableSummary: The call to arms for alternatives to model organisms of disease will fail without ongoing integration with – and validation against – complex animal models and support from the animal modelli... 02012
Reposted by Catrina HackerBen Hayden @benhayden.bsky.social · 06/05/2026New paper from the lab! "Plasticity and language in the anaesthetized human hippocampus" www.nature.com/articles/s41...nature.comPlasticity and language in the anaesthetized human hippocampus - NatureIn the hippocampus, complex processing of sensory stimuli occurs even in the unconscious state. 818478
Reposted by Catrina HackerVlad Ayzenberg @vayzenb.bsky.social · 04/05/2026My paper with @mikearcaro.bsky.social exploring the organization of the visual system in newborn infants is now out in @cp-neuron.bsky.social ! 27321
Reposted by Catrina HackerScientific American @sciam.bsky.social · 22/04/2026Today on a special Earth Day episode of the pod, three environmental experts share stories about times when environmental action succeeded in saving the planet—and explain why this can be done againscientificamerican.comAre you feeling hopeless about the environment? Listen to thisThis Earth Day three environmental experts share stories about times when environmental action succeeded in saving the planet—and explain why this can be done again 15917
Reposted by Catrina HackerMengting Fang @mtfang.bsky.social · 21/04/2026📹 7-min talk on this work: vimeo.com/1179294328vimeo.comPenn Grad Talks 2026 | Mengting FangMengting Fang, Psychology “Pause, Then Power: How the Brain Decides When to Work Hard” Natural Sciences Presentations | March 27, 2026 Penn Grad Talks (formerly known as Grad Ben Talks) features TE... 151
Reposted by Catrina HackerMengting Fang @mtfang.bsky.social · 21/04/2026🎯New preprint! The resource-rational dynamics of evidence accumulation www.biorxiv.org/content/10.6... Evidence accumulation isn’t stationary. It is dynamically controlled to trade off information gain against cognitive effort. With Jiang Mao, Tobias Donner @donnerlab.bsky.social, Alan Stockerbiorxiv.org 14917
Reposted by Catrina HackerSarah Solomon @sarahsolomon.bsky.social · 13/04/2026Super excited to share this preprint! How do we disentangle underlying structure from the particular features of a learning episode to benefit future learning? We find that memory reactivation during sleep promotes this structure abstraction process. www.biorxiv.org/content/10.6...biorxiv.org 16518
Reposted by Catrina HackerJeremiah Cohen @jeremiahycohen.bsky.social · 13/04/2026Delighted to share our discoveries about one of the brain's neurotransmitter systems: www.biorxiv.org/content/10.6... Together with colleagues at the @alleninstitute.org, we have learned a lot about a tiny cluster of neurons in the brainstem locus coeruleus (LC) that releases norepinephrine (NE). 1biorxiv.org 7254120
Reposted by Catrina Hackerhakwan lau @hakwan.bsky.social · 10/04/2026www.science.org/doi/10.1126/... "mental imagery reactivates the same sensory codes used during visual stimuli, suggesting the existence of a generative model capable of synthesizing detailed sensory contents from an abstract, semantic representation."science.orgA shared code for perceiving and imagining objects in human ventral temporal cortexMental imagery allows us to remember previous experiences and imagine new ones. Animal studies have yielded rich insight into mechanisms for visual perception, but the neural mechanisms for visual imagery remain poorly understood. We determined that ... 25117
Reposted by Catrina Hackerjerrytang.bsky.social @jerrytang.bsky.social · 09/04/2026We're excited to share our new study on decoding brain activity in participants with post-stroke aphasia! We think this is an important step towards cognitive brain-computer interfaces for patients with language disorders www.biorxiv.org/content/10.6... 1/8biorxiv.org 12611
Reposted by Catrina HackerSwapna Krishna @swapnakrishna.com · 07/04/2026And here’s the eclipse photo from Artemis II. I am in tears. 3354201180
Reposted by Catrina HackerScientific American @sciam.bsky.social · 07/04/2026NASA's first image from the Artemis II close flyby of the moon shows "Earthset," with a crescent Earth seen over the moon's cratered surface. 223156
Reposted by Catrina HackerPaul Byrne @theplanetaryguy.com · 03/04/2026This image of home just came down from the Artemis II crew. Taken after their translunar injection burn, there are aurorae at top right and lower left, and zodiacal light at lower right. Credit: NASA/Reid Wiseman 287218507377
Reposted by Catrina HackerMarc Slutzky @marcslutzky.bsky.social · 01/04/2026Thrilled and grateful to share our paper out today in @nature.com (rdcu.be/fbd7J). We used a brain machine interface (brain computer interface, #BCI) to causally test the origin of the high-gamma band of local field potentials #LFP. Results impact how we interpret many studies of #brain functionrdcu.beActive dissociation of intracortical spiking and high gamma activityNature - A brain–machine interface is used in monkeys to investigate the biophysical underpinnings of cortical high gamma-band activity, a signal that is often studied in the context of many... 1104
Reposted by Catrina HackerJennifer Groh @jmgrohneuro.bsky.social · 27/03/2026Science peeps! Excited to share first of two preprints just uploaded. This one concerns a person who hears sounds when she moves her eyes! We could actually record these sounds and verify they were connected to eye movements 1/ www.biorxiv.org/content/10.6...biorxiv.org 25719