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Reposted by Hyo Lee

Carina Heller, Ph.D. @carinaheller.bsky.social · 21/04/2026

🚨Preprint Alert 🧠 Our new preprint „Menarche onset is an inflection point for mental health and brain development“ is now online! 👉 Preprint available here: www.biorxiv.org/content/10.6...

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Reposted by Hyo Lee

Bratislav Misic @misicbata.bsky.social · 11/03/2026

Synaptome architecture shapes regional dynamics in the mouse brain | doi.org/10.1371/jour... How do diverse synapses relate to the spatial patterning of whole-brain dynamics? Justine Hansen explores @plosbiology.org ⤵️

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Reposted by Hyo Lee

Boris Bernhardt @borismontreal.bsky.social · 02/10/2025

🚨 New paper in Nature Methods: HippoMaps: multiscale cartography of the human hippocampus Open-source tools & data to explore structure and function of the 🍤🧠 (histology, in/ex vivo MRI, iEEG) Led by @jordandekraker.bsky.social docs: hippomaps.readthedocs.io paper: doi.org/10.1038/s415...

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Hyo Lee @hyolee.bsky.social · 23/09/2025

8. Finding sex differences does not rule out gender influences as the two are entangled in humans. Also, we map and annotate anatomical sex differences in the brain, but we do not directly test causal effects, or probe potential functional consequences (of which there may be none).

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Hyo Lee @hyolee.bsky.social · 23/09/2025

7. I thank all study participants and the team! @bogglerapture.bsky.social, @konradwagstyl.bsky.social, @mallarchak.bsky.social, @coevolvinglab.bsky.social + others not on BlueSky. Preprint: doi.org/10.1101/2025.09.10.675377 Also…

doi.org

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Hyo Lee @hyolee.bsky.social · 23/09/2025

6. We complemented these analyses with clinical cohorts featuring altered sex chromosome and gonadal biology (N=313). Sex effects on cortical anatomy are congruent with effects of X-chr dosage and testosterone production. This informs hypotheses for the causal drivers of sex-biased cortical anatomy.

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Hyo Lee @hyolee.bsky.social · 23/09/2025

5. In line with spatial dissociability of sex effects on SA and CT and their regionally varying contributions to CV sex-biases, SA and CT diverge in enrichments for functional and molecular signatures. Taken together, they may have distinct mechanistic roles for sex-biased cortical organization.

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Hyo Lee @hyolee.bsky.social · 23/09/2025

4. Sex differences in CV, SA and CT observed in the HCP sample also show high out-of-sample reproducibility in an independent dataset gathered using different MRI scanners in a different country (UK Biobank, N=669, the 5-year age band of 44-50 years closest to HCP).

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Hyo Lee @hyolee.bsky.social · 23/09/2025

3. These dissociable facets of sex-biased cortical anatomy are highly reproducible within the HCP dataset in a sample size dependent manner (R=0.67, 0.62 and 0.75 for CV, SA and CT at split-half sex-balanced sample size of 450).

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Hyo Lee @hyolee.bsky.social · 23/09/2025

2. Across the cortex, sex effects on SA and CT are uncoupled, and those on CV are more driven by SA than CT. However, region-by-region analysis show many instances of sex-biased CV that appear to be primarily driven by CT. Moreover, 42% of sex-unbiased CV are sex-biased in SA and/or CT.

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Hyo Lee @hyolee.bsky.social · 23/09/2025

1. Typically developing young adults from the HCP dataset (N=1,085) show significant sex effects on regional cortical volume (CV), surface area (SA) and cortical thickness (CT) in 30% of regions (fdr<0.05) with small-to-large effects (0.13≤|d|≤0.82).

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Hyo Lee @hyolee.bsky.social · 23/09/2025

Humans show reproducible sex differences in regional cortical volume but what are their morphological and mechanistic bases? Our new preprint approaches this question by separate analysis of cortical volume, area and thickness, and examining data from rare patient cohorts 👀 🧵⬇️

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