You've never seen human anatomy like this before.
Using a particle accelerator, the Human Organ Atlas is producing 3D scans of our organs in unprecedented detail! You can look through different layers of tissue and even zoom in on the cells for the heart, lungs, eyes, kidneys, and more.
Posts by Paul Fiedler
New preprint!
Prefrontal brain-to-brain synchrony during human group hunting: Evidence from fNIRS hyperscanning
Heroic work from @emre-yavuz-21.bsky.social and team
fNIRS & minecraft combined to reveal PFC synchrony during human group hunting
www.biorxiv.org/content/10.6...
Excited to share a new review by @kocherlab.bsky.social and me:
Nature-inspired neuroscience
We discuss diverse sensory systems and behaviors across the animal kingdom and argue for their integration into neuroscience. New tools in diverse systems are making this possible ✨
tinyurl.com/y5y9du27
Visual #workingmemory peeps, you're going to love this. This is super challenging - might give you pause on how we are measuring color memory...
My color memory is a 40.4/50. Please do worse so I feel better.
dialed.gg?c=3PCHDE
When Your Brain's Immune System Burns Out: A New Way to Think About Alzheimer's Disease
open.substack.com/pub/hyassine...
🧠 What makes threat memories so hard to forget? 🐍😱
Using focused ultrasound we provide causal evidence that the human amygdala drives rapid threat learning 🐍⚡ and determines how resistant those memories become to subsequent extinction 🐍🚫
🆕📄 www.science.org/doi/10.1126/...
New paper from @aial.ie! @harshp.com, Dick Blankvoort, Adel Shaaban, @sashamtl.bsky.social & me
We analysed 6 GenAI ToS--finding missing info, major power imbalances & user obligations that are impossible to meet without violating the terms
arxiv.org/abs/2603.18964 & aial.ie/research/ter...
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Incredibly proud of this paper led by @ossamaghenissa.bsky.social and @mathiasgua.bsky.social titled Basolateral 'Amygdala Astrocytes Encode Anxiety States'.
www.cell.com/neuron/fullt...
🧵 below
Also out today - A quick intro piece on the role of the cerebellum in cognition. What does it do? How will we find out? This is what @actlab.bsky.social and I think the critical questions are right now. It was fun to write - especially the section on evolution....
journals.plos.org/plosbiology/...
Experimental design and task. Top left: Intracranial electroencephalographic activity, eye and body movements were recorded as participants freely walked around the room. Wall-mounted motion-tracking cameras recorded the position of on-body reflective markers. Participants also wore an eye-tracking headset to monitor saccadic eye movements. A snapshot from the eye-facing camera is shown in the bottom right. For illustrative purposes, an experimenter is shown wearing the full setup. Top right: MRI of an example participant with an implanted RNS System. Purple dots indicate the location of four electrode contacts in the left medial temporal lobe (MTL). The top left inset shows an X-ray used to localize electrode positions. Bottom left: The environment contained 20 visible wall-mounted signs and three invisible circular target locations (0.7 m diameter). At the start of the task, participants freely explored the room to locate the invisible targets; each time a target was reached, an auditory tone signaled success, allowing them to gradually learn and remember these locations through experience. The task then alternated between two conditions: “visually-cued” navigation, during which participants navigated to a wall-mounted sign (e.g., “Blue 3”), and “memory-cued” navigation, during which they recalled and navigated to the previously learned invisible targets (e.g., “T”).
How do MTL theta oscillations relate to eye & body movements during navigation? @suthanalab.bsky.social &co show that #theta power increases during #saccades under memory demands, linking exploratory gaze & planning to memory‑related dynamics during #navigation @plosbiology.org 🧪 plos.io/4dwJhR8
I've said it before, and I'll say it again: Cognition is rhythmic.
Episodic memory encoding fluctuates at a theta rhythm of 3–10 Hz
www.nature.com/articles/s41...
#neuroscience
How do the brain’s event representations change as we gain familiarity with an experience?
Brain regions’ representations can become coarser or finer as events become familiar. Slow-timescale structure predicts memory.
Excited to share this work w/ Narjes Al-Zahli & @chrisbaldassano.bsky.social!
1/8 New preprint alert!
How are signals from the heart encoded in the brain?
What could be the functional implications of cardioception?
We found that neurons in the posterior insular cortex are precisely tuned to heartbeats, and that this cardio-insular coupling supports emotion coding in mice.
In a low stakes, artificial factorial experiment employers do not discriminate against immigrants.
But when it is about actually hiring people, employers do prefer applicants with German-sounding names in the same experimental choice set.
you say "i asked chatgpt"
i hear "i asked [an improv comedy group]"
an improv group wrote this report
instead of a therapist i use an improv comedy group
Open access link to new study in Nature Metabolism:
Python metabolomics uncovers a conserved postprandial metabolite & gut–brain feeding pathway.
🧪🐍
www.nature.com/articles/s42...
Registration open 🎉
MEEP – Heidelberg Summer School on Memory and Sleep
www.zi-mannheim.de/forschung/ab...
I tracked every keyword in 22 years of Cosyne abstracts to map how computational neuroscience evolved — from Bayesian brains to neural manifolds to LLMs — and where it's heading next.
We're thrilled to announce the Ctrl-Z Award, a US$2,500 prize for researchers “who discover substantial errors in their published work and take meaningful steps to correct the scientific record."
Covered by @nature.com today; read more here: centerforscientificintegrity.org/2026/03/10/a...
The Academic Wheel of Privilege showing the 24 socio-cultural identities. The 24 socio-cultural identity types span six sectors: health and wellbeing, society, culture and communication, gender and sexuality, education and career, living arrangements and lastly childhood and development. These identity types are shown as circles connected to three concentric rings (outer, middle and inner) of “identity” circles with increasing privilege as you go towards the centre.
Out now!
The Academic Wheel of Privilege 🎡
We developed a framework & app to guide authorship teams in making equitable and thoughtful authorship decisions.
@saralilplants.bsky.social, @justinsulik.bsky.social, Bethan Iley, Mahmoud Elsherif, @flavioazevedo.bsky.social
🔗 osf.io/preprints/me...
We found a viral Trojan Horse: a virus can hide inside another virus.This one surprised us: deltaviruses don’t just borrow a helper virus. They can travel inside it.
A literal Trojan Horse “virus-in-a-virus” route into cells. 🤯 Kudos to 1st author @viroscope.bsky.social and co-authors !
These reviews on neural manifolds are super relevant to today’s world of large-scale population recordings. How do we link circuits, population geometry, dynamics, and function?
“A neural manifold view of the brain” from Perich, Narain, and Gallego 2025
www.nature.com/articles/s41...
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Many living people carry fragments of Neanderthal DNA, remnants of ancient interbreeding events, with uneven distribution across chromosomes. New work by @sarahtishkoff.bsky.social lab suggests patterns are most consistent with Neanderthal contribution to human populations being highly male biased.🧪
1/9 New paper with @gonzalezgarcia.bsky.social and @lindedomingo.bsky.social : “Characterising semantic prioritisation in visual working memory.”
Core question: when we hold visual info briefly in mind, what gets accessed first: perceptual details or semantic meaning?
198 effect sizes in ego depletion resesrch showed an effect size of d=0.62. Preregistered large replications (including some by original authors) yielded an effect size of 0. No one has been able to offer any other explanation for this huge research waste than massive p-hacking.