Dan Handwerker
@danielhandwerker.bsky.social
Neuroscience & fMRI methodology researcher. Views are my own.
Great interview of @emilyjacobs.bsky.social & @laurapritschet.bsky.social. Masterclass of science communication. Instead of a clean story of cognitive+hormone relationships (to highlight their own work) they push a narrative & share their excitement about how much we don't know & could still learn.
This is Your Brain on Hormones
We don’t have hormones, hormones have us.
radiolab.org
The 2026 fMRI Summer Course with @fmri-today.bsky.social has begun and the recordings and slides are shared here: fmrif.nimh.nih.gov/SummerCourse
FMRIF Summer Course
fmrif.nimh.nih.gov
A love letter from a child refugee to the country that welcomed him
Irving Berlin "God Bless America" on The Ed Sullivan Show
YouTube video by The Ed Sullivan Show
youtu.be
Please RT - We are looking for someone who wants to establish and lead a cutting-edge neuroimaging center at Northwestern, working closely with multiple labs, including my own, in neuroscience research broadly construed. If you are curious, dm me and I'm happy to answer questions
We are hiring an Associate or Full Professor to lead the neuroimaging research program at Northwestern's Center for Translational Imaging in the Department of Radiology careers.northwestern.edu/psc/hrnu_er/...
So much interesting work at #OHBM2026. With simultaneous sessions on "within person studies" & another full of within person studies on the menstrual cycle, it would be fun to have a follow-up round table where the two groups talk to each other.
Newest contribution to the AFNI Codex (Code Examples), linking papers and scripts/cmds that were used. Thanks to the amazing @storrisi.bsky.social & LL Chao for this latest work. We hope this and others help users with ideas and examples for their own projects: afni.nimh.nih.gov/pub/dist/doc...
14.2. FMRI Codex — AFNI, SUMA and FATCAT: v25.2.00
afni.nimh.nih.gov
Some issues will online Q&A at #OHBM2026. At ed course we figured out moderators only have access on laptops, not phones. And only some browsers work. Chrome works. Firefox doesn't. @ohbmofficial.bsky.social
About to start my travel to #OHBM2026 Excited to help organize a full day ed course on multi-echo fMRI. Schedule is here: me-ica.github.io/ohbm-2026-mu... @enekourunuela.com @drjuliamoser.bsky.social @dowdlelt.bsky.social @ohbmofficial.bsky.social
me-ica.github.io
Postdoc and data scientist openings with an amazing team.
Job ad (1/2): Postdoc fellowship in the AFNI group (SSCC, NIMH, NIH, USA). FMRI/MRI methods dev, software design, statistics, analysis, data viz, quality control, machine learning and more! Please see: discuss.afni.nimh.nih.gov/t/job-ad-pos... I am happy to chat at OHBM+Brainhack. Please share!
@enekourunuela.com just put together a simple and fast search of #OHBM2026 content at me-ica.github.io/ohbm-2026-mu... (Select "All posters" for more than just multi-echo). 1/2
OHBM 2026 abstracts
An unofficial community index of OHBM 2026 posters — focused on multi-echo fMRI, but searchable across the whole meeting. Filter by day and method, browse every poster, and read abstracts in place.
me-ica.github.io
Wonderful news! Journal of Research on Research is launched. "if you are a researcher who researches any aspect of research, then this is the journal and community for you." Worth reading the whole editorial for a transparent and thoughtful account of this amazing community-driven effort.
We're excited to launch J·ROR, the Journal of Research on Research. A new open-access home for research on how research is funded, organised, conducted, communicated, and evaluated. Our first editorial: www.tandfonline.com/doi/full/10.... #ResearchOnResearch #MetaScience #OpenScience #STS
Dorig et al. showcase NeurodeskEDU, an emerging learning resource built on Neurodesk that enables fully reproducible neuroimaging workflows through interactive Jupyter Notebooks: doi.org/10.52294/001... @neurodesk.org @sbollmann.bsky.social #FutureofPublishing #SpecialIssue
I realize I sound like old man yelling at clouds but... ...in my day WE READ ALL THE CITATIONS BEFORE WE CITED THEM. That's how you GAIN THE KNOWLEDGE TO CITE THEM IN THE FIRST PLACE. Signed: Someone who literally read two whole books on the color blue just to write a single 1000 word article.
I'm sorry, what? In writing my first monograph, I spent six weeks trying to track down a citation in TWO languages I didn't know. And good thing too, because the citation was wrong. That's scholarship. That's research. You know, the thing we're trained to do?!?
This gives a bunch of problems that boil down to AI is swamping peer review because people are fraudulently passing off AI text as their own scientific output. For all the weaknesses of peer review, a solution that pushes for more AI without addressing AI-facilitated fraud is fundamentally unserious
AI is pushing scientific publishing to the brink. For a field as sprawling as neuroscience, the crisis may also be an opportunity to finally connect findings across subfields, writes Tim Requarth. #neuroskyence www.thetransmitter.org/from-bench-t...
Just heard a term to complement p-hacking: RGB-hacking. p-hacking tweaks analyses to get results below a desired thresh & RBG-hacking tweaks the colormap & scale. + vals pop more with this colormap. Not calling out the source because I could easily find another & this can be done without ill intent.
tedana, multi-echo fMRI denoising software, newsletter includes tedana v26.0.3 updates and details of multi-echo fMRI ed course at OHBM 2026. groups.google.com/g/tedana-new...
Multi-echo fMRI course at OHBM 2026 and tedana v26.0.3
groups.google.com
This makes me think of "Franchise" by Isaac Asimov, which felt like an extreme thought experiment when I first read it and now seems a bit closer to real events. www.astro.sunysb.edu/fwalter/HON3...
"Pure fictions are on the brink of being treated as scientific and political knowledge. If we do not pull back, our understanding of society might become artificial, too." There's a logic to simulations which excludes pretending they're substitutes for sampling from the population of interest.
How do we define "good" fMRI data? Especially with resting state, there are circularity risks if we evaluate data quality as showing the networks we expect to see. Javier Gonzalez-Castillo (& me & others) developed pBOLD, a new metric that uses multi-echo info. www.biorxiv.org/content/10.6... 1/8
biorxiv.org
The Laboratory of Brain and Cognition at NIH is hosting a two-day symposium on 'Foundations and Frontiers in Cognitive Neuroscience' in honor of Dr. Alex Martin, to be held at NIH (with online videocast) on April 7th-8th, 2026. Register to attend online or in-person at: bit.ly/4bYlbxw
I've been reading a great deal about current and potential impacts of AI on labor markets. Just published: a 2-page overview of frameworks for thinking about this: www.congress.gov/crs-product/...
congress.gov
I was sure the illusion would break at some length: can't keep grow forever, right? Wrong. My brain hurts.
The strongest version of this illusion I’ve seen! Absolute head-wrecker!
True story: it took me years to get a passport in my late 20s - at the time I did not have a single piece of identification with my name spelled correctly. All different misspellings. I eventually found a sympathetic clerk who was like 'I can see what happened here'.
Postdoc position to work on neuroimaging methods with @fmri-today.bsky.social (and me) fim.nimh.nih.gov/positions-av...
Positions Available
This is the webpage for the Section on Functional Imaging Methods at the National Institute of Mental Health.
fim.nimh.nih.gov
Over the years, I have written a few Jupyter/Rmd/Matlab notebooks that attempt to teach some statistical concepts, particularly in neuroimaging. You can find them here: www.mrc-cbu.cam.ac.uk/people/rik.h..., though I will say a bit more about each one in a number of posts over next few days.
People
mrc-cbu.cam.ac.uk
I am recruiting a Postdoc to join my lab at UMN. If you or someone you know is interested in studying individual differences in brain and cognitive aging, check out the listing and my website in my bio and apply! I appreciate RTs to help get the word out as well :)
With some trepidation, I'm putting this out into the world: gershmanlab.com/textbook.html It's a textbook called Computational Foundations of Cognitive Neuroscience, which I wrote for my class. My hope is that this will be a living document, continuously improved as I get feedback.
Five years ago, I had a very sick child and referrals to several pediatric medical specialists and tests in a building a few blocks from the US Capitol. The kid got a diagnosis. Treatment worked. But for me, January 6, 2020 means memories of rescheduling medical appointments for a very sick child.
So I made a little simulation where there is no actual discordance, i.e. the underlying values from which the CBF, CBV, BOLD, and T2* are measured all move in lockstep. With zero noise this gives you zero discordant voxels (nice little diagonal line).