Steven Meisler

@stevenmeisler.com

NIMH Postdoctoral Fellow at Penn Medicine; Harvard/MIT PhD alum; Neuroimager; Jazz vibraphonist; Wannabe BBQ pit-master. stevenmeisler.com

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How much does the childhood environment shape the brain? In our new preprint, we study the exposome (300+ environmental exposures) and link it to white matter structure in 8,000+ kids. 🧠✨ 🔗 Read the preprint: bit.ly/4wfsybZ 🧵 Thread below

White matter reflects the childhood exposome

The childhood environment is critical for brain development. However, most neuroimaging studies examine individual environmental measures (e.g., socioeconomic status) or a limited set of exposures, obscuring how the combination of complex, real-world exposures jointly influence brain development. Here we investigated how white matter shape and tissue properties are linked to the childhood exposome, a multidimensional measure capturing over 300 environmental exposures. Using multi-shell diffusion MRI from 8,183 children (ages 9-10) in the ABCD study, we quantified microstructural and macrostructural properties across 62 person-specific white matter tracts. The exposome showed widespread and highly replicable associations with both white matter microstructure and macrostructure: more advantaged environments were associated with larger tract macrostructure and lower orientation dispersion. Principal component analysis revealed that the dominant axis of exposome-white matter covariation aligns with the cortical sensorimotor-association hierarchy, such that tracts spanning this hierarchy exhibit the strongest associations with the exposome. Multivariate models demonstrated that patterns of white matter features explained 25% of the variance in the exposome in unseen individuals. Notably, white matter-based prediction of cognition was markedly reduced after accounting for the exposome (~82% reduction in explained variance), indicating that brain-cognition associations overlap substantially with variance captured by the exposome. These findings generalized to independent data from the Healthy Brain Network (n=869), which differs substantially from ABCD in MRI acquisition, participant selection, and childhood environments. Together, these results suggest that white matter architecture strongly reflects the childhood environment. ### Competing Interest Statement A.A.B. has consulted for Octave Bioscience and holds equity in Centile Bioscience. RB is on the Advisory Board and holds equity in Taliaz Health. D.A.F. is a founder of Turing Medical. Any potential conflict of interest has been reviewed and managed by the University of Minnesota. D.A.F. is an inventor of the FIRMM Technology 2198 (FIRMM, real-time monitoring and prediction of motion in MRI scans, exclusively licensed to Turing Medical). Any potential conflict of interest has been reviewed and managed by the University of Minnesota. This research was supported by funding from the National Institutes of Health (T32MH019112 to S.L.M.; R37MH125829 to D.A.F. and T.D.S.; 2R01MH112847 to R.T.S. and T.D.S.; R01MH120482 to T.D.S.; 2R01MH113550 to T.D.S.; R01MH123550 to R.T.S; F30MH138048 to K.Y.S.; RF1MH121868, RF1MH121867, RF1MH126699, R01AG060942, U19AG066567, R01EY033628, and R01EB027585 to A.R.; R01MH134886 to R.B.; T32MH016804 and T32MH018951 to V.J.S; R01MH133843 to A.A.B.; F31MH136685 to J.B.). S.L.M. was supported by the Hartwell Foundation (S.L.M.); G.S. was supported by a postdoctoral fellowship from the Canadian Institutes of Health Research (CIHR). A.S.K. is supported by a NARSAD Young Investigator Award from the Brain and Behavior Research Foundation. M.D.H. was supported by the German Research Foundation (project number 572317568). LMS was supported by a NSF SBE Postdoctoral Research Fellowship (#2507497).

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The OHBM OSSIG has been operating since 2016, hosting and promoting open science education for the OHBM community and beyond. SIGs must be renewed every 5 years. Please sign the following petition by Mon, Jan 26 to help us continue operating. Thank you! docs.google.com/document/d/1...

List of members who support the SIG renewal

List of members who support the SIG renewal Please provide the list of at least 12 OHBM members in good standing who support the SIG renewal and are willing to engage in the SIG activity. Name Email...

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#PenNLINC is recruiting a clinical coordinator / lab manager!!! Looking for someone who is good with both people + code, wants to learn to acquire + analyze imaging data. Alumni in this role have written 1st author papers + gone to top grad programs. Website: www.pennlinc.io Job: bit.ly/4ojvCir

neuroimaging | Satterthwaite Lab | UPenn

www.satterthwaitelab.com Homepage for Satterthwaite lab neuroimaging | neurodevelopment | adolescence | psychiatry | machine learning | network science

pennlinc.io

BIG news- applications for our hackathon are NOW OPEN🎉 Apply now to join us in Florida in January 2026! The deadline for applications is DECEMBER 1st🚨 so apply today! For more info & to apply, check out Hackathon.ABCD-ReproNim.org 🎊

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Want to learn more about the Adolescent Brain Cognitive Development study?👀 Check out the ABCD-ReproNim course! The Fall 2025 course is going on NOW✨ Students may have the opportunity to participate in the 2026 hackathon in Miami🏝️ For more info: abcd-repronim.org 🎉

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Excited to share that our work introducing the Reproducible Brain Charts (RBC) data resource is now published in Neuron!! 🎉 📚 Read the paper: authors.elsevier.com/c/1lpaF3BtfH... 🧠 Explore the RBC dataset: reprobrainchart.github.io

Golia Shafiei@goliashf.bsky.social · last yr.

(1/18) Now out on BioRxiv‼️ Reproducible Brain Charts: An open data resource for mapping brain development and its associations with mental health | doi.org/10.1101/2025... Funded by National Institute of Mental Health (NIMH)

Congrats @audreycluo.bsky.social!! Celebrating a wonderful dissertation defense that shed novel, fundamental, and convincing insights into white matter development.

Ted Satterthwaite@ted-satterthwaite.bsky.social · 12mo ago

CONGRATS TO DOCTOR @audreycluo.bsky.social !!! Last week, Dr. Luo knocked our collective socks off with a thesis defense for the ages. Her presentation on "Axes of Hierarchical Brain Development" was magnificent -- beautiful science, presented in an incredibly accessible and engaging way. WOO!!!!

OK, It is not just the HBCD release... docs.hbcdstudy.org It’s the ABCD Release time too! docs.abcdstudy.org nbdc-datahub.org That means the ABCC 3.0.0 is live!!! The largest release yet from the ABCD-BIDS Community Collection. This is going to be fun!! 👇 Let’s dig in.

Damien Fair@drdamienfair.bsky.social · last yr.

Alert! ... for the child development world! @fluxsociety.bsky.social @fitngin.bsky.social ‪ The Healthy Brain and Child Development (HBCD) Study has released its first data wave - it’s massive. Check here: docs.hbcdstudy.org and here: nbdc-datahub.org Here’s why it matters 🧠🍼

Psychedelic mental health research is booming—but how do we keep up with rapidly evolving evidence? 🌱 Our team proposes a living evidence synthesis approach to ensure clinicians, policymakers, and the public have access to the latest, most reliable data. 🔗 www.nature.com/articles/s44... 🧪🧵

An initiative for living evidence synthesis in clinical psychedelic research - Nature Mental Health

Renewed interest in psychedelics as treatments for mental disorders has recently emerged, but substantial challenges remain in obtaining evidence from available data to inform clinical decision-making...

nature.com