Sign in

Richard Gast

@rgast.bsky.social
1.2K followers 958 following 52 posts

Neuroscientist at Scripps Research. Postdoc in Ann Kennedy's lab (@antihebbiann). Dynamical systems, mathematical modeling, neural computation. Open-source promoter and scientific software developer (github.com/pyrates-neuroscience)

PostsRepliesMedia
Reposted by Richard Gast
Tim Verstynen @tdverstynen.bsky.social · 29/09/2026
Looking for a postdoc in comp neuro and human brain imaging? Interested in foraging? Join our international collaboration with Jon Rubin, @jyotikab.bsky.social, & @davidrobbe.bsky.social be.bsky.social to study the neural basis of foraging behavior! cmu.wd115.myworkdayjobs.com/CMU/job/Pitt...
cmu.wd115.myworkdayjobs.com
Postdoctoral Research Associate – Cognitive Axon Lab – Dietrich College
The Cognitive Axon Lab, in the Department of Psychology and Carnegie Mellon Neuroscience Institute, seeks applications for a multi-year Postdoctoral Research Associate at Carnegie Mellon University. T...
02118
Richard Gast @rgast.bsky.social · 23/09/2026
What does adaptation do to globally coupled networks? In our newest preprint, we developed a mean-field theory that predicts when adaptation turns homogeneous connectivity into heterogeneous network structure, and when it doesn't: arxiv.org/abs/2609.22597
arxiv.org
Deviations from global coupling in adaptive oscillator networks: a mean-field theory for the variance of coupling weights
A wide range of physical and biological systems are adaptive networks, in which the dynamics of the nodes and of the edges connecting them co-evolve. Mean-field reductions of such systems typically tr...
2162
Reposted by Richard Gast
Ann Kennedy @antihebbiann.bsky.social · 22/09/2026
Preprint 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 Richard Gast
Omid V. Ebrahimi @omidvebrahimi.bsky.social · 17/09/2026
📜 Out now: ‘Towards a genetics of mental disorders as complex dynamical systems’ After 2 years of work with @michelnivard.bsky.social & @ludvigdb.bsky.social We outline a roadmap to align behavioural genetics with novel dynamic theories of mental disorders A thread 🧵 doi.org/10.31234/osf...
14717
Reposted by Richard Gast
Jeremiah Cohen @jeremiahycohen.bsky.social · 16/09/2026
Happy to share the version of record of our locus coeruleus paper here: www.nature.com/articles/s41... Prior thread on some of our discoveries in this study: bsky.app/profile/jere...
nature.com
Topographic structure and function of locus coeruleus noradrenaline neurons - Nature
Dorsal and ventral noradrenergic neurons in the locus coeruleus form topographic subpopulations whose projection patterns and activity encode choice switching, reward-prediction errors and disregard o...
813352
Reposted by Richard Gast
Anil Seth @anilseth.bsky.social · 16/09/2026
1/6 An extraordinary @nature.com paper has just landed from the lab of @sergiuppasca.bsky.social. They found a way to create "xenocortical mice" which have ~92% of their cortex occupied by a cortical organoid derived from human stem cells.
69038
Reposted by Richard Gast
David Ho @davidho.bsky.social · 12/09/2026
I resigned from ExxonMobil today. I spent the last three years doing fossil fuel extraction research at both BP and ExxonMobil. Neither company is acting responsibly. They are racing to maximize extraction while the window to act closes, and gambling with our lives. More below.
145136944893
Reposted by Richard Gast
Jieyu Zheng @jieyusz.bsky.social · 10/09/2026
An acortical mouse — born without hippocampus and most of its neocortex — learns the Manhattan Maze: a 30× improvement in 5 hours, 18 rewards! Now a question for everyone: How can an acortical brain do this? Leave a comment! Preprint w/ @mameister4.bsky.social: www.biorxiv.org/content/10.6...
68928
Reposted by Richard Gast
Ann Kennedy @antihebbiann.bsky.social · 08/09/2026
New preprint on our favorite theme: same connectome + different neurons = different dynamics. @shtakasu.bsky.social looked at detail balance (E+I inputs sum to 0) in RNNs w/different activation functions, finding that it stabilized some networks and destabilized others. arxiv.org/html/2608.30...
1325
Reposted by Richard Gast
Lilian Weber @lilweb.bsky.social · 01/09/2026
‼️Come join our team at the IKW as a full professor! ‼️ I moved here last year and couldn't be happier - supportive colleagues, incredibly curious students, and lots of exciting developments at the intersection of natural and artificial intelligence. ✨ Any questions: contact Tim or me
1105
Reposted by Richard Gast
Nahel Belgherze @wxnb.bsky.social · 31/07/2026
Bordeaux, France, has now recorded more days above 40°C in 2026 alone than during the entire 105-year period from 1920 (when observations began) to 2025. This is deeply shocking.
8236472100
Reposted by Richard Gast
Ann Kennedy @antihebbiann.bsky.social · 28/07/2026
New preprint led by @rgast.bsky.social- part 1 of Richard's ongoing effort to make a better firing rate model: developing mean-field models that can be fit to biological data to capture both the dynamics of neural populations and the underlying physiological heterogeneity that sculpt those dynamics.
1204
Reposted by Richard Gast
Ann Kennedy @antihebbiann.bsky.social · 27/07/2026
Happy Monday! Come learn how jellyfish swim. In a review led by fluid dynamics maestro Alex Hoover, we outline how neuromechanical modeling will help us understand how modulation of neural activity allows jellyfish to jet and pirouette through fluids www.sciencedirect.com/science/arti...
Figure 1. The fluid dynamics of jellyfish swimming. a) Minimum intensity projection of a video clip of swimming Clytia hemisphaerica recorded at 30 fps; dark spots capture trajectories of tentacle bulbs, mouth, and gonads over time. Blue outlines approximate the margin of jellyfish on the frame of maximum extent on two successive swim pulses; green arrow shows direction of swimming. b) Minimum intensity projection of the same animal during a period of turning, showing asymmetry in the movement of bulbs on the inside vs outside of the turn. c) 3D diagram of the bell of a swimming jellyfish, showing starting and stopping vortex rings and fluid flow into (blue) vs away from (purple) the bell during the passive energy recapture phase of swimming. d) Cross section of a swimming jellyfish showing fluid vorticity toward the end of a swim pulse relaxation phase, showing locations of the starting and stopping vortex rings and the boundary layer. e) Swim pulse dynamics of an oblate jellyfish under symmetric bell contraction, producing straight swimming. The starting vortex ring is generated by active muscle contraction of the bell (ii, purple arrows), while the stopping vortex ring is generated by passive elastic relaxation (iii-iv, green arrows) from the mesoglea. Forward motion during the relaxation phase arises from the interaction of the starting and stopping vortex rings, with the starting vortex ring pulling fluid away from the bell and the stopping vortex ring directing fluid into the subumbrellar cavity. f) Swim pulse dynamics under asymmetric bell contraction, producing turning. Initially at rest (i), the neuronal signal initiates a muscular contraction in the bell margin on the inside of the turn before a stronger contraction of the bell margin is observed on the outside of the turn (ii-iii, purple arrows). The corresponding passive restoration yields a stronger expansion of the bell margin on the outside of the turn (iv, green arrows).
48224
Richard Gast @rgast.bsky.social · 27/07/2026
The Ott-Antonsen ansatz revolutionized our understanding of coupled oscillator systems with heterogeneous oscillators. We developed a multi-ensemble method that increases the applicability of the OA ansatz to empirical data substantially arxiv.org/abs/2607.09516, as we demonstrate on neural data.
arxiv.org
A multi-ensemble mean-field reduction method for networks of globally coupled phase oscillators with arbitrary parameter distributions
Understanding the dynamical properties of coupled phase oscillator systems with heterogeneous oscillator frequencies has been a long-standing challenge of complex systems theory. While the seminal wor...
0194
Reposted by Richard Gast
Stelios Katsanevakis @skatsanevakis.bsky.social · 24/07/2026
🌡️Could the current #ElNiño become the strongest in at least 150 years? #2027 could become the hottest year on record with major consequences for #Biodiversity. A timely reminder that ecosystem management must prepare for climate extremes—not just long-term trends. 🧪🌍🌐 www.nature.com/articles/d41...
nature.com
This El Niño is set to be the largest on record by a ‘mind-blowing margin’
Forecasters predict that the monster climate pattern will combine with global warming to push global temperatures in 2027 to new heights.
02919
Reposted by Richard Gast
Krembil Brain Institute 🧠 @kbi-uhn.bsky.social · 20/07/2026
🎉 Please join us in welcoming Dr. Richard Roth to UHN’s @krembilresearch! Dr. Roth joins us as a Scientist, focusing on the interplay between synaptic plasticity and neural circuit adaptation, and how these processes shape motor learning.    🔗 Learn more about his research: www.motor-plasticity.org
1157
Reposted by Richard Gast
Mark Copelovitch @mcopelov.bsky.social · 19/07/2026
Unbelievable thuggery. No other good team in FIFA does this stuff, as often or at this scale. It's not even close. You think you've seen it all with Mexico and CONCACAF, but it's not even in the same ballpark.
933032
Reposted by Richard Gast
Mark Copelovitch @mcopelov.bsky.social · 19/07/2026
Look at them. Absolute nonsense. Give them all cards. Send them all off.
410810
Reposted by Richard Gast
Scott Rich, Ph.D. @richcompneuro.bsky.social · 11/07/2026
Heading to Halifax for the @cnsorg.bsky.social meeting? Make sure to plan to attend the workshop organized by @rgast.bsky.social and myself on "Neuronal heterogeneity’s role in network dynamics and computation." The (hopefully) final schedule is linked below! richlab.pnb.uconn.edu/cns2026/
051
Reposted by Richard Gast
Scott Rich, Ph.D. @richcompneuro.bsky.social · 29/06/2026
Going to be in Nova Scotia for #CNS2026? Make sure you swing by the workshop I've organized with @rgast.bsky.social entitled "Neuronal heterogeneity's role in network dynamics and computation." The preliminary schedule and talk abstracts are now available! richlab.pnb.uconn.edu/cns2026/
183
Reposted by Richard Gast
gamera obscura @ohrobin.bsky.social · 27/06/2026
This Danville, VA city council candidate made a very dramatic video about sidewalks and public safety, and I love it and him. Worrying about a possible milkshake duck situation, I looked at his FB page, but he seems ok. Juneteenth celebrations, community outreach, Methodists. A solid old gent.
21781471349
Reposted by Richard Gast
Ann Kennedy @antihebbiann.bsky.social · 10/06/2026
Braitenberg Vehicle day with Hugo Marques at QABVR: wire light, touch, and distance sensors to a pair of motors, then tune the sensor gains and motor outputs to play follow the leader
3295
Reposted by Richard Gast
Linnéa Gyllingberg @gyllingberg.bsky.social · 19/05/2026
What is the minimal machinery needed for complex, cognition-like behavior? With @lostintheswarm.bsky.social, we show how self-sustained calcium oscillations, diffusion, and mechanics may be enough to coordinate behavior across a single cell with no nervous system. www.biorxiv.org/content/10.6... 1/
310834
Reposted by Richard Gast
Brian Nosek @briannosek.bsky.social · 18/05/2026
Neuroscientists interested in rigor, methodology, and open practices, check out this job opportunity to work on a COS-MIT collaboration to improve the research culture in the Brain and Cognitive Sciences program at MIT. careers.peopleclick.com/careerscp/cl...
careers.peopleclick.com
Neuroscience Research Methodologist
MIT - Neuroscience Research Methodologist - Cambridge MA 02139
02614
Reposted by Richard Gast
Jeremiah Cohen @jeremiahycohen.bsky.social · 13/04/2026
Delighted 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). 1
biorxiv.org
7254120
Reposted by Richard Gast
Konrad Kording @kordinglab.bsky.social · 23/03/2026
"We are watching two disciplines trade their worst habits. Neuroscience is mistaking benchmarked prediction for understanding, and machine learning is mistaking mechanistic language for mechanism. ..."
18113
Reposted by Richard Gast
Beth in CA @bjerz.bsky.social · 20/03/2026
Too adorable not to post. She's making sure you see the sign. #birdoftheday #birds #owls #adorable
12670771042
Reposted by Richard Gast
Dr. Jens Foell @jensfoell.de · 20/03/2026
I know for a fact that Anthropic used an illegally uploaded version of one of my books for their training data. The way I feel about it does not factor into this at all.
1263
Reposted by Richard Gast
Dr Abeba Birhane @abeba.blacksky.app · 07/03/2026
omg, nailed
8730246
Reposted by Richard Gast
Mark Copelovitch @mcopelov.bsky.social · 06/03/2026
The Dude abides. I don't know about you but I take comfort in that. It's good knowin' he's out there. The Dude. Takin' 'er easy for all us sinners. Happy #LebowskiDay to all who celebrate
1315720
Reposted by Richard Gast
Ivy L. Xiong @ivyxiong.bsky.social · 02/03/2026
#DynamicsClub in March: 𝗥𝗶𝗰𝗵𝗮𝗿𝗱 𝗚𝗮𝘀𝘁 @rgast.bsky.social will share his work on neural heterogeneity and network function (PMID: 38198531, 41475350) pubmed.ncbi.nlm.nih.gov/41475350/ March 6 (Friday) at 11am PT / 2pm ET Join us in person at UCLA or on Zoom: lingyunxiong.github.io/DynamicsClub/
062
Reposted by Richard Gast
Konrad Kording @kordinglab.bsky.social · 26/02/2026
This paper on how the brain may do gradient descent is very cool: www.nature.com/articles/s41...
nature.com
Vectorized instructive signals in cortical dendrites - Nature
Mice learning a neurofeedback brain–computer interface task show neuron-specific teaching signals in cortical dendrites, consistent with a vectorized solution for credit assignment in the brain.
315645
Reposted by Richard Gast
Thomas Nichols @nichols.bsky.social · 01/02/2026
Delighted to see that @ohbmossig.bsky.social has confirmed dates for the 2026 @ohbmofficial.bsky.social brain hack! ohbm.github.io/hackathon2026/ 11-13 June Thur-Sat, in the usual 3 days before the meeting, at the Campus Victoire, University of Bordeaux Looking forward to it!
ohbm.github.io
Hackathon Bordeaux 2026 | June 11-13
Join us in Bordeaux, France for an unforgettable 3-day hackathon experience. Build, innovate, and connect with developers from around the world.
032
Reposted by Richard Gast
Hadas Weiss @hadas.bsky.social · 31/01/2026
me and the peer reviewer i suggested
1623
Reposted by Richard Gast
Sebastiaan Mathôt @cogsci.nl · 21/01/2026
University of Groningen: ⭐ no more big-tech by 2030 ⭐ Google Workplace 🚫 Windows 🚫 MS Office 🚫 ChatGPT 🚫 A huge challenge! Meeting culture won't get us there. Dedication and focus will. 💪🚀 Let's get to work. ukrant.nl/magazine/we-... @rug.nl @rug-gmw.bsky.social #science
ukrant.nl
We can do without them: how the UG is cutting ties with Big Tech
By 2030, the university aims to be digitally independent. And that’s not a pipe dream, say proponents of the plan.
0175
Reposted by Richard Gast
Dermot Lynott @dermotlynott.bsky.social · 20/01/2026
Alchemists be like
media.tenor.com
a man with a mullet and a mustache is wearing a wig and making a funny face .
Alt: a man with a mullet and a mustache is wearing a wig and making a funny face saying WTF.
2122
Reposted by Richard Gast
TK (Takashi DY) Kozai @bioniclab.bsky.social · 15/01/2026
Just out in @nature.com BME: Our Review unpacks intracortical microstimulation: axons, not somas, drive activation; direct + indirect pathways shape perception; parameters interact with neuron type, layer, and network; long-term use limited by neural depression & tissue response. 🧠⚡ rdcu.be/eZbTz
rdcu.be
Neural mechanisms underlying intracortical microstimulation for sensory restoration
Nature Biomedical Engineering - Intracortical microstimulation can elicit artificial sensations in persons who have lost sensation due to neurological injury or disease. This Review discusses...
1192
Reposted by Richard Gast
Blitzy 🩺 ⚡️🏁 @blitz-y.bsky.social · 10/01/2026
Anyone have a thought about this weird mol on my hand?
My left hand with Avagadro’s Constant
5274
Reposted by Richard Gast
Jay Patel @infotainment.bsky.social · 10/01/2026
Useful browser extension to help assess issues in papers: - retraction check - PubPeer comments check - tortured phrases check - fake references check We need more tools in this spirit to help make sense of science.
33013
Richard Gast @rgast.bsky.social · 02/01/2026
At the Bernstein Conference 2024, Jeremie Lefebvre and I organized a workshop on the computational consequences of neural heterogeneity. Now, slightly more than a year later, we funneled the emerging discussions into a perspective piece: www.cell.com/neuron/fullt...
cell.com
How heterogeneity shapes dynamics and computation in the brain
No two neurons are the same, yet models often treat neural populations as pools of identical and interchangeable elements. Here, Dahmen et al. highlight recent theoretical advances that reveal the imp...
38324
Reposted by Richard Gast
Yaroslava @strategywoman.bsky.social · 27/12/2025
Greetings from Kyiv, where the night brought missiles and drones. Explosions still continue this morning. Emergency power outages. Heating problems. Residential buildings hit.
36427118
Reposted by Richard Gast
Yaroslava @strategywoman.bsky.social · 25/12/2025
Christmas Procession in Kyiv. View from the bell tower of St. Michael's Monastery. I want the world to see this.
24719182
Reposted by Richard Gast
Maria Niedernhuber @mariandrnh.bsky.social · 09/12/2025
anyone got any advice on the following situation? I wrote and did a big chunk of the admin for a large MRC grant which also also awarded. I am named in the Staff breakdown on the grant as "researcher co-lead" with 100%FTE, and I am mentioned by name as "postdoctoral researcher Maria Niedernhuber"
10811
Reposted by Richard Gast
Jeff Youngblood @jeffyoungblood.bsky.social · 05/12/2025
The Tasselled Wobbegong is a master of disguise that can eat a fish almost as big as itself in one gulp. It's classified as a shark, but when it lays on the sea floor it looks like a harmless rug if you manage to see it. But with powerful jaws and sharp teeth they are no fish to mess with.
34455791084
Reposted by Richard Gast
Leon Simons @leonsimons.com · 07/12/2025
This is such a great visualization of the carbon cycle and of how humanity has completely altered it within a geological instant, by @rarohde.bsky.social:
38738
Reposted by Richard Gast
Ninargh 🐈‍⬛ 🎃 👻 @ninawils.bsky.social · 03/12/2025
Relatable Corvid
10268502110
Reposted by Richard Gast
Jay Van Bavel, PhD @jayvanbavel.bsky.social · 30/11/2025
This is a scandal. Public universities should be banned from paying these insane buyouts for college coaches. No pro sports teams are paying $33 million to fire their incompetent coach, so why are colleges paying this kind of money?!?
1216034
Reposted by Richard Gast
Jes Battis @jesbattis.bsky.social · 28/11/2025
And I swear, once again, this is not dunking on kids. We are seeing this at all levels--even grad students. AI + social media has had a profound impact on how we think and process our world, and we can't stop to reflect on it, because billionaires keep hurling addictive tech at us.
222635284
Reposted by Richard Gast
Dan Levenstein @dlevenstein.bsky.social · 23/11/2025
“Our findings challenge the conventional focus on low-dimensional coding subspaces as a sufficient framework for understanding neural computations, demonstrating that dimensions previously considered task-irrelevant and accounting for little variance can have a critical role in driving behavior.”
biorxiv.org
Neural dynamics outside task-coding dimensions drive decision trajectories through transient amplification
Most behaviors involve neural dynamics in high-dimensional activity spaces. A common approach is to extract dimensions that capture task-related variability, such as those separating stimuli or choice...
814341
Reposted by Richard Gast
Ann Kennedy @antihebbiann.bsky.social · 21/11/2025
Hello New York! Giving a Swartz seminar at NYU today, come say hi! as.nyu.edu/departments/...
0142