Claire O'Callaghan
@claireocallaghan.bsky.social
📤 1226
📥 1235
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Working in neuroscience etc. Sydney, Australia
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Claire O'Callaghan
Lindsay Schwarz
12 days ago
Thrilled this is out, led by former PD Cameron Ogg (now with her own lab at
@rhodescollege.bsky.social
!). It was a driven by a desire to see, in real-time, how LC activity/NE release influences downstream targets in behaving animals. SO hard to do, but Cameron did it!
www.cell.com/cell-reports...
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Locus coeruleus norepinephrine neurons facilitate orbitofrontal cortex remapping and behavioral flexibility
Ogg et al. use in vivo imaging techniques to record activity in the locus coeruleus (LC) and the orbitofrontal cortex (OFC) during a reversal learning task in freely moving rodents. They show that man...
https://www.cell.com/cell-reports/fulltext/S2211-1247(25)01459-7
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Claire O'Callaghan
Alex Fornito
13 days ago
Exciting announcement! Our Institute is calling for applications for a EMCR 2-year fellowship . Come and join a great team @turnerinstitute! Details here:
careers.pageuppeople.com/513/ci/en/jo...
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Monash University - Sign In
Sign in with your account to access PageUp
https://careers.pageuppeople.com/513/ci/en/job/687062/turner-impact-research-fellow-level-a-or-level-b-psychology
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Claire O'Callaghan
Stuart Oldham
17 days ago
My very normal, by the book presentation from this years OHBM is now available. So if you weren't at OHBM, were there but happened to miss it, or if you did see it and just want to relive it all over again, here is your chance :) I'm quite fond of this one.
www.youtube.com/watch?v=lP86...
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OHBM 2025 | Oral Session | Stuart Oldham | Only a matter of time: developmental heterochronicity c…
YouTube video by Organization for Human Brain Mapping
https://www.youtube.com/watch?v=lP86m8q-k5Q
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Excellent read for a clear take on the current state of Australian scientific research funding
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17 days ago
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Claire O'Callaghan
Gavan McNally
23 days ago
substack.com/@gavanmcnall...
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Gavan McNally (@gavanmcnally)
Australia is sleepwalking into scientific irrelevance Australia is living through a dangerous contradiction: we publicly praise science while systematically dismantling the conditions required for...
https://substack.com/@gavanmcnally/note/c-184374386?r=17ja05
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Claire O'Callaghan
Alex Kwan
22 days ago
We used rabies virus 👾 to map how
#psilocybin
modifies long-range circuits 🧠, revealing network-specific reorganization that we didn’t expect. The full study is now online at Cell.
@cp-cell.bsky.social
Paper 👉
www.cell.com/cell/fulltex...
Thread for a synopsis 👉
bsky.app/profile/alex...
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Claire O'Callaghan
Alex Fornito
23 days ago
Very important! If you are an Australian researcher, please complete
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Claire O'Callaghan
Alan White
25 days ago
Amazing letter in The Times (also an unbelievable play fwiw)
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Claire O'Callaghan
Alex Fornito
30 days ago
🔥🔥The Program for the 2026 Noosa Brain Workshop is now Available!!! 🔥🔥 We have an incredible line up of confirmed speakers! Commuter registrations are still available, but places are limited. Check the website for details:
www.monash.edu/turner-insti...
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Claire O'Callaghan
bioRxiv Neuroscience
about 1 month ago
Rapid neocortical network modifications via dendritic plateau potential induced plasticity
https://www.biorxiv.org/content/10.1101/2025.11.19.689338v1
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Claire O'Callaghan
Matilde Vaghi
about 2 months ago
🚀 We're hiring ! 🕵️ Seeking a postdoc to study the development & individual-level organization of brain circuits supporting (in)flexible behavior in psychiatric populations. 🧠 Precision functional mapping, fMRI, normative modelling Details 👉
tinyurl.com/3h8tcv2e
🗓️ Apply by Dec 10! Please RT 🙌
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Postdoctoral Researcher (2288) - Birkbeck, University of London
Birkbeck
https://cis7.bbk.ac.uk/vacancy/postdoctoral-researcher-599088.html
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Claire O'Callaghan
Alex Fornito
about 2 months ago
🔥🔥Great news!🔥🔥 The registration deadline for the Noosa Brain Workshop is extended to Nov 17. Register by this date to guarantee accomodation:
monash.edu/turner-insti...
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Claire O'Callaghan
Sarah Heilbronner
2 months ago
Suzanne Haber was just elected to the National Academy of Medicine! Her work on the organization of the cortex and basal ganglia has had a huge impact. Please take the opportunity to congratulate her the next time you see her.
www.urmc.rochester.edu/news/story/u...
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University of Rochester Neurobiologist Suzanne Haber Elected to National Academy of Medicine
An internationally recognized scientist, her work has transformed our understanding of the brain networks that play a central role in many mental health disorders, including obsessive compulsive disor...
https://www.urmc.rochester.edu/news/story/university-of-rochester-neurobiologist-suzanne-haber-elected-to-national-academy-of-medicine
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Claire O'Callaghan
Christopher Whyte
2 months ago
The final paper of my PhD is now out as a preprint. This is a follow-up piece in series of two companion papers modelling awareness and suppression in a new variant of continuous flash suppression.
arxiv.org/abs/2510.17154
🧵 1/3
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A Minimal Quantitative Model of Perceptual Suppression and Breakthrough in Visual Rivalry
When conflicting images are presented to either eye, binocular fusion is disrupted. Rather than experiencing a blend of both percepts, often only one eye's image is experienced, whilst the other is su...
https://arxiv.org/abs/2510.17154
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Claire O'Callaghan
Sam Gershman
2 months ago
Really interesting work by Bakhurin and colleagues challenging the reward prediction error hypothesis of dopamine:
www.nature.com/articles/s41...
I love this figure which both echoes and undermines the famous figure from Schultz et al. (1997).
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Claire O'Callaghan
Jack Ashby
3 months ago
As I argue in
#PlatypusMatters
, Australia has the world's best mammals, but is sadly the worst place on Earth to be a mammal, with the planet's worst
#extinction
rate. The Christmas Island shrew is now the latest species to be officially declared extinct.
www.theguardian.com/environment/...
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And then there were none: Australia’s only shrew declared extinct
The tally of Australian mammals extinct since 1788 is now 39 species – far more than for any other country
https://www.theguardian.com/environment/commentisfree/2025/oct/11/and-then-there-were-none-australias-only-shrew-declared-extinct?CMP=Share_AndroidApp_Other
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Claire O'Callaghan
Kurzgesagt – In a Nutshell
3 months ago
AI-generated content is flooding the internet, and we're entering a new era of information overload. Watch our latest video to find out how AI slop affects the internet and why kurzgesagt videos will always remain human-made:
https://kgs.link/AISlop
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Claire O'Callaghan
Choong-Wan (Wani) Woo
3 months ago
Our new paper is out in Current Opinion in Behavioral Sciences; a perspective paper on the DMN, titled "Embodying the default mode network: self-related processing from an embodied perspective"
www.sciencedirect.com/science/arti...
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Embodying the default mode network: self-related processing from an embodied perspective
Self-related processes in the default mode network (DMN) have been viewed predominantly through a cognitive lens, often overlooking the embodied dimen…
https://www.sciencedirect.com/science/article/pii/S2352154625001263
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Claire O'Callaghan
Masud Husain
3 months ago
The current environment is making it near impossible to run clinical trials in the UK. One key issue discussed in
@brain1878.bsky.social
is the duplication - or worse - of regulatory oversight at NHS hospitals & universities. My views on how to change the system
academic.oup.com/brain/articl...
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Claire O'Callaghan
Kira Poskanzer
3 months ago
Congrats to Charlotte Taylor and team for dissecting how astrocyte networks integrate histamine to modulate adenosine over sleep and wake in unexpected ways:
dx.plos.org/10.1371/jour...
@vincenttse.bsky.social
@maxine.science
@trishavv.bsky.social
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Cortical astrocyte histamine-1-receptors regulate intracellular calcium and extracellular adenosine dynamics across sleep and wake
While histamine-1-receptor (H1R) signaling in neurons regulates arousal, these receptors are also abundant on cortical astrocytes. This study shows that astrocytic H1R signaling modulates calcium acti...
https://dx.plos.org/10.1371/journal.pbio.3003376
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Claire O'Callaghan
Mathew Summers
3 months ago
Check out our resource for navigating and analyzing spatial transcriptomics data in the thalamus, which we fondly call "the THALMANAC" (𝐓𝐇𝐀𝐋amus 𝐌ERFISH 𝐀𝐍alysis and 𝐀𝐂cess), now live on bioRxiv:
www.biorxiv.org/content/10.1...
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Exploring the correspondence between gene expression and thalamic nuclei using the THALMANAC resource
The thalamus connects the sensory organs and major subcortical brain regions with the neocortex. The thalamus has long been divided into multiple discrete nuclei, based on cytoarchitecture, histochemi...
https://www.biorxiv.org/content/10.1101/2025.09.30.679413v1
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Claire O'Callaghan
Boris Bernhardt
3 months ago
🚨 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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Claire O'Callaghan
Hugo Spiers
3 months ago
You can sign up for the early access to the new Sea Hero Quest:
seaheroquest.com
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Claire O'Callaghan
OHBM Australia
3 months ago
📢 OHBM Australia 2025 Updates! 🖼️ Poster abstract submissions open until Oct 20 👉 Submit here:
ohbm-aus.github.io/posts/2025-a...
🏆 Award nominations are now open! 🎖️ Early Career Researcher Award 🌟 Emerging Leadership Award 🗓️ Due by Oct 20 👉
ohbm-aus.github.io/posts/call-f...
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OHBM Australia: 2025 Annual Meeting
OHBM Australia: Uniting the Australian human brain mapping community
https://ohbm-aus.github.io/posts/2025-annual-meeting/
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Claire O'Callaghan
Martin J. Dahl
3 months ago
At
#ICON
? – Join us tomorrow to hear about novel measurement & manipulation approaches for neuromodulatory systems! 🗓️Sept 19, 🕚11:45 am 🏫Room Sé
#ICON2025
#CogNeuro
#AcademicSky
#LocusCoeruleus
#neuroskyence
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Claire O'Callaghan
Johannes Bohacek
3 months ago
🔵 I'm interrupting my social media hiatus to flag this important preprint from the Bruchas lab (is he not on Bluesky!?) together with
@davidweinshenker.bsky.social
. Very difficult experiments to show that dopamine release from LC terminals is independent of VTA 🔥
www.biorxiv.org/content/10.1...
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https://www.biorxiv.org/content/10.1101/2025.09.15.676390v1.full.pdf
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Claire O'Callaghan
OHBM Australia
3 months ago
Don't forget! Abstracts due Sept 22 📝 Don’t miss out!
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Claire O'Callaghan
DrBreaky
3 months ago
Interested in hippocampal dynamics and their interactions with cortical rhythms? Our physically constrained model of cortico-hippocampal interactions - complete with fast geometrically informed numerical simulation (available at embedded github repo)
www.biorxiv.org/content/10.1...
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Claire O'Callaghan
hakwan lau
4 months ago
www.biorxiv.org/content/10.1...
Representational Geometries of Perception and Working Memory: A Pilot Study Tomoya Nakamura's first fMRI project ... in which we hereby release a preprint as a way of pre-registration 🧠📈
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Representational Geometries of Perception and Working Memory: A Pilot Study
This study aims to compare the neural representational geometry of visual perception and visual working memory using human fMRI. In our pilot experiment, observers viewed a face-scene blended image (s...
https://www.biorxiv.org/content/10.1101/2025.09.07.674590v1
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Claire O'Callaghan
Jakob Hohwy
4 months ago
Come to Melbourne for the 2025 Conference of the Australasian Society for Philosophy and Psychology Check out the great keynotes - submit your abstract Come join this exciting community of researchers Nov 24-25 - Register now!
#philosophy
#neuroskyence
#philsky
sites.google.com/monash.edu/a...
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ASPP 2025 Melbourne
Australasian Society for Philosophy and Psychology 2025 Conference Melbourne, November 24th - 25th, 2025
https://sites.google.com/monash.edu/aspp-2025-melbourne/
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Claire O'Callaghan
4 months ago
Of potential interest to those keen on motor control and/or multi-task networks. Congrats to Elom and Eric.
www.biorxiv.org/content/10.1...
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Motor cortex flexibly deploys a high-dimensional repertoire of subskills
Skilled movement often requires flexibly combining multiple subskills, each requiring dedicated control strategies and underlying computations. How the motor system achieves such versatility remains u...
https://www.biorxiv.org/content/10.1101/2025.09.07.674717v1
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Claire O'Callaghan
Mehrdad Kashefi
4 months ago
Excited to share my latest work with
@jonathanamichaels.bsky.social
@diedrichsenjorn.bsky.social
&
@andpru.bsky.social
! We asked: How does the motor cortex account for arm posture when generating movement? Paper 👉
www.biorxiv.org/content/10.1...
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Compositional neural dynamics during reaching
The complex mechanics of the arm make the neural control of reaching inherently posture dependent. Because previous reaching studies confound reach direction with final posture, it remains unknown how...
https://www.biorxiv.org/content/10.1101/2025.09.04.674069v1
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Claire O'Callaghan
Trends in Cognitive Sciences
4 months ago
Online Now: Noradrenaline drives learning across scales of time and neurobiological organisation
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Noradrenaline drives learning across scales of time and neurobiological organisation
The noradrenergic system plays a diverse role in learning, from optimising learning behaviour to modulating plasticity. Work bridging across micro- and macroscale levels is revealing how noradrenaline achieves this diverse role in learning. Through its balance of targeted versus broad modulation of neurons and non-neuronal astrocytes, the noradrenergic system acts across multiple neurobiological and temporal scales to support adaptive learning. With a multiscale organisation that constrains behaviour and brain dynamics based on value-laden information, and the capacity to bridge the fast neural timescales of milliseconds with the slower timescales of natural behaviour, the noradrenergic system acts as an ‘orchestra conductor’ coordinating learning across scales.
http://dlvr.it/TMlvXK
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Claire O'Callaghan
Micah G. Allen
4 months ago
New preprint! We are pleased to share our Hierarchical Bayesian framework for Interoceptive Psychophysics! Implemented in rstan, we provide a complete suite of tools spanning model comparison, parameter recovery, multifactor designs, power analysis, and more! 🎯
www.biorxiv.org/content/10.1...
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Claire O'Callaghan
OHBM Australia
4 months ago
🚨🚨🚨 Don't forget our annual meeting is coming up! Registration and abstract submission is open!🚨🚨🚨
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Claire O'Callaghan
hakwan lau
4 months ago
does someone good at coding & analysis want to work remotely w/ us in the coming few months (before end of 2025), as a paid consultant? project will be on neurofeedback (fMRI, ECoG, calcium imaging). we'll work towards developing the experiments & analysis pipelines together. if so pls DM me ur CV🧠📈
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Adaptive learning is coordinated across behaviour, time and neurobiology (from synapses and dendrites, to astrocytes and the systems level). If you’ve ever wondered how noradrenaline helps shape these multiscale learning processes, you might like this:
www.cell.com/trends/cogni...
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4 months ago
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Claire O'Callaghan
Tara Murphy
4 months ago
The Australasian Dark Sky Alliance have created a petition to get the Aust. Govt to create legislation that limits light pollution and preserve Australia's Dark skies. Important for human health, wildlife and
#Astronomy
! Australians can sign here:
www.aph.gov.au/e-petitions/...
🔭☄️
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e-petitions
e-petitions
https://www.aph.gov.au/e-petitions/petition/EN7346
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OHBM Oz rego + abstracts now open. Get amongst it!
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4 months ago
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Claire O'Callaghan
OHBM Australia
4 months ago
✨✨ We are excited to announce the OHBM Australian Chapter 2025 Annual Meeting! 🧠🇦🇺 📢 Abstract submissions & registration now OPEN (abstract submission closes September 15th at 5pm) 📍 Melbourne 🏙️☕ 📅 Wednesday, November 12, 2025
ohbm-aus.github.io/posts/2025-a...
We hope to see you there! 🤩
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Claire O'Callaghan
The New Yorker
4 months ago
“The moon, it turns out, is a great place for men.” Nathan Heller reflects on E. B. White’s “perfect paragraph” on the 1969 moon landing.
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Nathan Heller on E. B. White’s Paragraph About the Moon Landing
What sort of response could measure up to the occasion? White’s idea was as simple as it was audacious.
https://www.newyorker.com/magazine/takes/nathan-heller-on-e-b-whites-paragraph-about-the-moon-landing?utm_medium=social&utm_social-type=owned&utm_source=bluesky&mbid=social_bluesky&utm_brand=tny
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Claire O'Callaghan
Yohan J John
4 months ago
Here's the latest installment in my series on neuroscience and the hyperreal. I look at the potential dangers of "walled garden thinking", and why extensible modeling is important.
open.substack.com/pub/yohanjoh...
#neuroscience
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To model biological neurons, step outside the "walled gardens" of machine learning
Part 3 of a series on neuroscience and the hyperreal, featuring rebound excitation and poor Yorick's skull
https://open.substack.com/pub/yohanjohn/p/to-model-biological-neurons-step?utm_source=share&utm_medium=android&r=fbdb7
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Claire O'Callaghan
Alex Fornito
4 months ago
Interested in Network hubs, cortical hierarchies, and gradients? Ever wonder where they come from? Check our latest review, where we cover different approaches to mapping hubs, models for their evolution, and mechanisms for how they develop:
osf.io/preprints/os...
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Claire O'Callaghan
John Lees
4 months ago
My PhD student
@leonielorenz.bsky.social
(with Eva Geissen) has made this nice (free) online course to introduce mathematical modelling for biology:
www.ebi.ac.uk/training/onl...
Including both molecular and epidemiological examples
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Mathematical modelling for biologists - Modelling concepts in biological research
Mathematical modelling for biologists - Modelling concepts in biological research
https://www.ebi.ac.uk/training/online/courses/mathematical-modelling-biologists/#vf-tabs__section--overview
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Position open for a neuroimaging focused postdoc to come work with us in Sydney Feel free to get in touch for a chat if you have any questions about it :)
usyd.wd105.myworkdayjobs.com/en-GB/USYD_E...
4 months ago
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Claire O'Callaghan
The Organization for Human Brain Mapping
5 months ago
The keynote speaker for the OHBM Virtual Satellite Meeting is Dr. Michael Breakspear, @drbreaky.bsky.social! You won’t want to miss his talk – your only chance will be to register and catch it live at 12:00-13:00 UTC on September 11! 🔗
https://humanbrainmapping.org/25SEASIG
#OHBM
#SEASIG
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Claire O'Callaghan
WeRateDogs
5 months ago
This is Archibald. He's been holding in a sneeze since last September. Finally let it loose. 13/10 bless you buddy
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Ben Fulcher
5 months ago
Are you interested in our work on complex physical systems and applications (to neural systems)? Wanna join us in Sydney? 🐨 🦘 We have two open positions: 1. Postdoc position:
usyd.wd105.myworkdayjobs.com/USYD_EXTERNA...
2. Fully-funded PhD position:
www.sydney.edu.au/scholarships...
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Postdoctoral Research Associate (Physics)
Full time, 2-year fixed term position with potential to extend. Located on the Camperdown Campus at the School of Physics. Exciting opportunity to conduct research in a world-leading interdisciplinary...
https://usyd.wd105.myworkdayjobs.com/USYD_EXTERNAL_CAREER_SITE/job/Camperdown-Campus/Postdoctoral-Research-Fellow--Physics-_0133282-1
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Claire O'Callaghan
Jörn Diedrichsen
5 months ago
Impressive new paper by
@nikospriovoulos.bsky.social
. Clearly pushing the limits of what we can do with in-vivo imaging for the highly folded human cerebellum. Especially interesting is the careful characterization of cerebellar vasculature.
www.biorxiv.org/content/10.1...
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