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mike freund

@mikefreund.bsky.social
740 followers 2.2K following 39 posts

forever a student currently a post-doc @ sites.brown.edu/badrelab curious about control of decision making, neural dynamics, multivariate stats mcfreund.github.io

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Reposted by mike freund
Jo Etzel @joetzel.bsky.social · 05/08/2026
#introduction I'm currently a staff scientist at Washington U in St Louis (USA), but (late 2026, early 2027) looking for a new position. I'm a big fan of task #fMRI, #BIDS, #baseR #Rstats (incl. graphics) and #knitr, #QC, and papers with very extensive #supplementary materials, but not AI.
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mike freund @mikefreund.bsky.social · 16/09/2026
The thing you didn't ask for? This is where it bites hardest:
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Wouter Kool @wouterkool.bsky.social · 15/09/2026
I expect to recruit a PhD student this cycle! The Control and Decision Making Lab at WashU studies control, effort, and decision making, combining behavioral experiments with modeling and neuroimaging. If that sounds cool, check out our work: cdmlab.wustl.edu. How to apply: psych.washu.edu/apply
cdmlab.wustl.edu
Control and Decision Making Lab
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Cheng Xue @cxue.bsky.social · 15/09/2026
Our 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.
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mike freund @mikefreund.bsky.social · 08/09/2026
re-elect frank sobotka!
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Atsushi Kikumoto @kikumotoatsushi.bsky.social · 01/09/2026
I'm recruiting a PhD student for Fall 2027 at the University of Maryland — Cognitive Flexibility Dynamics Lab, studying cognitive control via brain recording (M/EEG, MRI), stimulation (TUS), and computational modeling. Please email me: cfd-lab.com/join
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annecollins.bsky.social @annecollins.bsky.social · 02/09/2026
Check out our new Trends In Cognitive Science paper on mechanisms of cognitive flexibility - a broad collaborative piece with Florian Bähner, Ali Hummos, Sarah Oh, Kai Sandbrink, and Andreas Meyer-Lindenberg www.sciencedirect.com/science/arti...
sciencedirect.com
Neurocomputational mechanisms underlying cognitive flexibility: a translational perspective
Cognitive flexibility allows us to adjust behavior when environmental rules change and to recombine prior knowledge in novel situations. However, the …
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Harrison Ritz @hritz.bsky.social · 27/08/2026
Our task-switching paper is now out at Current Biology! www.cell.com/current-biol... We find that that our brains reset to a task-neutral state between trials, providing flexibility when the upcoming task is uncertain. RNNs also learn this strategy, but only when trained to switch tasks.
schematic of how a brain might reset to a neutral state between trials
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bioRxiv Neuroscience @biorxiv-neursci.bsky.social · 14/08/2026
Monkeys learn to report their own sensory cortical population activity www.biorxiv.org/content/10.64898/20…
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mike freund @mikefreund.bsky.social · 16/07/2026
'global workspace' and 'adaptive coding' proposals have this flavor? though they are more qualified than the claim that the decoder would always fail doi.org/10.1073/pnas... www.nature.com/articles/350...
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Tobias Egner @tobiasegner.bsky.social · 15/07/2026
New paper out: Led by super grad student Jim Zhang and in collaboration with Greg Cogan, we review and synthesize Insights into the neural mechanisms supporting cognitive stability and flexibility from human intracranial electroencephalography. For free access: authors.elsevier.com/a/1nRYWY3M3p...
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Kevin J Miller @kevinjmiller.bsky.social · 03/06/2026
Computational models are a key part of science but discovering new ones is hard! DataDIVER discovers concise models from data, which surface new mechanistic ideas and clear predictions for future experiments From Google Deepmind Neuroscience Lab + collaborators www.biorxiv.org/content/10.6...
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Gouki Okazawa @handle.invalid · 31/05/2026
New 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.com
The ‘neat’ and ‘messy’ in task-dependent neural geometry and computation
To 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 ...
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Rui Xu @rui-xu.bsky.social · 20/05/2026
New preprint as my first post! "Monosynaptic connections link functionally similar regions in human cortex." We use electrical stimulation + fMRI in epilepsy patients to map whole-brain monosynaptic connectivity at 42 cortical sites. doi.org/10.64898/202... 1/n
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Randolph Helfrich @randolph-helfrich.bsky.social · 04/05/2026
Very excited to share our latest paper led by @nbinish.bsky.social in @natneuro.nature.com We demonstrate how a communication subspace channels higher-dimensional PFC dynamics into lower-D motor activity to enable efficient behavior using human iEEG. www.nature.com/articles/s41... #neuroskyence
nature.com
A communication subspace relays context-dependent actions from human prefrontal to motor cortex - Nature Neuroscience
Context-dependent behavior selects actions according to task demands. Using direct brain recordings in humans, Binish et al. uncover how coordinated population activity efficiently channels informatio...
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mike freund @mikefreund.bsky.social · 23/04/2026
Neat! Been waiting for y'all to try to crack LPFC :) How does this 'parallel chains' view square with perspectives that emphasize privilege of mid-lateral PF for integration & influence? (specifically FPN regions there, or "multiple demand" if you use that phrase). Any hints of this in your data?
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Evan Gordon @gordonneuro.bsky.social · 22/04/2026
I always assumed that brain function had to line up with cytoarchitectonics. It turns out I was wrong. Human cortex, especially PFC, is tiled by chains of functional patches that subdivide and interlink architectonic areas into parallel processing streams. www.biorxiv.org/content/10.6...
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Reza Shadmehr @rezashadmehr.bsky.social · 15/03/2026
Today I received a note from a grad student who lives in Tehran. Her note gives you firsthand experience of what it’s like to live in a city that is being bombed, and what it’s like to be young and feel despair about your future. rezashadmehr.blogspot.com/2026/03/hope...
rezashadmehr.blogspot.com
Hopeless in Tehran
Essays on neuroscience
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Roselyne Chauvin @roselynechauvin.bsky.social · 13/03/2026
The 6x US memory champion – Nelson Dellis – can memorize a deck of cards in 40 seconds and knows the first 10K digits of pi. To figure out how, he let us peak inside his brain. Here is what we learned in our precision brain mapping study www.biorxiv.org/content/10.6... youtube.com/shorts/MryMq...
youtube.com
how does his brain do it ? #neuroscience #memory #sport Nelson Dellis 6x US memory champion
YouTube video by Roselyne Chauvin
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bioRxiv Neuroscience @biorxiv-neursci.bsky.social · 17/02/2026
An Efficient Computing Theory of Prefrontal Structured Working Memory Representations www.biorxiv.org/content/10.64898/20…
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Bill Grueskin @bgrueskin.bsky.social · 14/12/2025
Kudos to the Brown University students who are posting continuous live updates, spaced just minutes apart, on the campus shooting. A lot of grace and professionalism under immense pressure. www.browndailyherald.com/article/2025...
browndailyherald.com
Live updates: Two deceased in active shooter incident at Brown University
Serving the Brown University community since 1891
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mike freund @mikefreund.bsky.social · 28/11/2025
How does this stim protocol compare to what is used in human studies?
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Dave Byrnes @djbyrnes1.bsky.social · 06/11/2025
Ellis starting the day off by reading out Carl Sandburg's poem "Chicago" in its entirety.
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Christos Constantinidis @cconstan.bsky.social · 27/10/2025
New paper from the lab: www.nature.com/articles/s41... A brief thread (1/10)
nature.com
Longitudinal measures of monkey brain structure and activity through adolescence predict cognitive maturation - Nature Neuroscience
Working memory improves during adolescent brain development. Zhu et al. tracked monkeys through adolescence, revealing that maturation of white matter tracts and refinement of neural firing patterns s...
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Mark Histed @markhisted.org · 17/10/2025
I made a video about the shutdown, and why this government worker won’t be a pawn. When the president and Supreme Court are both acting lawlessly, Congress must stand up and stop it. US science is collapsing and Congress needs to act. 🧪 Full video here: www.instagram.com/reel/DP1tXXE...
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mike freund @mikefreund.bsky.social · 19/09/2025
I'm really curious what factors drive var(nTc). Both from basic perspective, but also from practical -- of someone that wants to put these dynamics under tighter experimental control / to have more certainty about what's happening when :)
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mike freund @mikefreund.bsky.social · 19/09/2025
It is so interesting that the nTc is so variable across trials. But this is also sobering: clearly, time-aligned trial averaging has *deep* flaws -- yet so much of human cog neuro relies on it, due to unavailability of high-SNR recordings...
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Thomas Luo @thomas-zhihao-luo.bsky.social · 17/09/2025
How does the brain decide? 🧠 Our new @nature.com paper shows that neural activity switches from an 'evidence gathering' to a 'commitment' state at a precise moment we call nTc. After nTc, new evidence is ignored, revealing a neural marker for the instant when the mind is made up. rdcu.be/eGUrv
nature.com
Transitions in dynamical regime and neural mode during perceptual decisions - Nature
Simultaneous recordings were made of hundreds of neurons in the rat frontal cortex and striatum, showing that decision commitment involves a rapid, coordinated transition in dynamical regime and neura...
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Joey Fishkin @fishkin.bsky.social · 17/09/2025
I'd like to commend the lawyers who wrote this complaint on behalf of the professors and employees of the University of California against the Trump administration. It's a sober legal document with strong claims, but also, this is a fight for public opinion, and this reads like the writers know it.
documentcloud.org
AAUP-UC-Trump Lawsuit -- Uploaded by Jaweed Kaleem of the Los Angeles Times
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mike freund @mikefreund.bsky.social · 13/09/2025
You sound like an all-American to me !
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mike freund @mikefreund.bsky.social · 12/09/2025
post-script: "all-american upbringing" seems to preclude this usage
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mike freund @mikefreund.bsky.social · 12/09/2025
i think it could have a variety of connotations (see other comments), but one dominant usage is in reference to being competitive in athletics or academics on national scale, a la en.wikipedia.org/wiki/All-Ame...
en.wikipedia.org
All-America - Wikipedia
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Roselyne Chauvin @roselynechauvin.bsky.social · 09/09/2025
Want to know the behind the scenes of the "Disuse-driven plasticity in the human thalamus and putamen" paper? discover @ndosenbach.bsky.social and I interview by @cp-cellreports.bsky.social www.cell.com/cell-reports...
cell.com
Q&A with Nico U.F. Dosenbach and Roselyne Chauvin
Nico U.F. Dosenbach and Roselyne Chauvin spoke with Cell Reports about their recent paper, in which they observed subcortical plasticity in humans following a 2-week arm/hand-casting paradigm with dai...
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mike freund @mikefreund.bsky.social · 06/09/2025
…Btw I do not mean to suggest there is no worth to mixed-selective perspectives, or that they are wrong! Personally I have just struggled when thinking about how exactly to provide strong positive evidence for them. And curious to hear your perspective.
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mike freund @mikefreund.bsky.social · 06/09/2025
You can’t be, until you find one :) Its existence is not guaranteed. The same I do not think is true for the mixed basis case. IMO, this is what often makes it compelling when an interpretable factorized basis is identified.
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mike freund @mikefreund.bsky.social · 06/09/2025
What appears mixed and non-linear from one basis could be sparse & factorized from another. When you see mixed selectivity, how can you be confident that your basis isn't just wrong? doi.org/10.1038/s415...
doi.org
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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Gaia Tavoni @gaia-tavoni.bsky.social · 26/08/2025
I will always be grateful for the immense -- and unique -- contribution the Swartz Program made in supporting theoretical neuroscience over the past 30 years. Its closure leaves a profound void. doi.org/10.53053/FPR...
doi.org
Long-standing theoretical neuroscience fellowship program loses financial support
Funding from the Swartz and Sloan Foundations helped bring physicists and mathematicians into neuroscience for more than 30 years.
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mike freund @mikefreund.bsky.social · 14/08/2025
What is this, a fitness test for Presidents?
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derek guy @dieworkwear.bsky.social · 14/06/2025
via Benedicto.Uribe on TikTok
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Eliot Higgins @eliothiggins.bsky.social · 07/06/2025
The conditions that have led to what’s happening in the US today exist in democracies around the world. They are an inevitable outcome of our collective failure to adapt to fundamental changes in the information ecosystem on which our democracies were originally built.
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mike freund @mikefreund.bsky.social · 23/05/2025
Fully agree. Our story feels incomplete to me without those things, but we simply had to get it out the door. But, I think Todd & co. are working on those follow-ups now!
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mike freund @mikefreund.bsky.social · 23/05/2025
of course, don't mean to imply that one method is better or more sensitive in general than the other (that depends on exp design & theoretical questions). just that they can be sensitive to different neural features.
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mike freund @mikefreund.bsky.social · 23/05/2025
:) Borne mostly from reflecting on reactions from family/friends ("you're STILL in school/a student?!") --- yes, aren't we all?
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mike freund @mikefreund.bsky.social · 23/05/2025
(...but correct me if i'm misremembering) So the decoders we used didn't require the neural signatures to be aligned across subjects, but only across sessions w/in subject. Seems likely that at finer spatial scales, multi-subj decoders would lose sensitivity more quickly than subject-specific ones.
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mike freund @mikefreund.bsky.social · 23/05/2025
hey thanks for mentioning David! Interesting ideas in this thread. Yes we were able to identify relatively reliable signatures at the region level. One potentially relevant difference btw our studies: our decoders were subject-specific, whereas yours were fitted on data from multiple subjs, IIRC.
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Mark Peifer (He, him) @peiferlabunc.bsky.social · 16/05/2025
It's a demoralizing time to be a US scientist but that is part of their strategy. My friend Jeff Dangl just emailed our faculty reminding us that NSF and NIH grant review panels are still being held and staff there want us to keep submitting. Stay engaged and keep fighting! 1/n
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Irina Barnaveli @barnaveliirina.bsky.social · 08/05/2025
Our paper in @natcomms.nature.com, we show how cognitive maps in the hippocampal system could solve the general problem of representing and relating multiple alternative action plans.  doi.org/10.1038/s414... With @doellerlab.bsky.social, Patrick Haggard, @vigano.bsky.social, Daniel Reznik
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Carlos Brody @carlosbrody.bsky.social · 08/05/2025
we're crowd-sourcing a searchable repository of tangible benefits stemming from federally-funded research. Come enjoy the great stories; or send in an idea; or volunteer to join the team. publicusaresearchbenefits.com please share and re-share so we get more great stories in there!
publicusaresearchbenefits.com
Searchable database of tangible benefits that federally-funded research gave us.
A crowd-sourced site. Health and Well-being. National Security. Prosperity.
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Sam Gershman @gershbrain.bsky.social · 07/05/2025
New work by @liushuze.bsky.social establishes an empirical link between policy complexity and neural dimensionality: www.biorxiv.org/content/10.1...
biorxiv.org
Neural and behavioral signatures of policy compression in cognitive control
Making context-dependent decisions incurs cognitive costs. Cognitive control studies have investigated the nature of such costs from both computational and neural perspectives. In this paper, we offer...
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Brian Nosek @briannosek.bsky.social · 28/04/2025
An open letter supporting the international bachelor’s psychology programs threatened for cuts. Proceeding with these cuts would damage some of the most important and impactful psychology departments globally. #supportdutchpsychology openletter.earth/against-lang...
openletter.earth
Against Language Barriers: A Call to Protect International Education in Dutch Academia
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