Claire O'Callaghan
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claireocallaghan.bsky.social
Claire O'Callaghan
@claireocallaghan.bsky.social
Working in neuroscience etc.
Sydney, Australia
Reposted by Claire O'Callaghan
🔥🔥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...
November 5, 2025 at 9:32 PM
Reposted by Claire O'Callaghan
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...
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...
www.urmc.rochester.edu
October 21, 2025 at 2:48 PM
Reposted by Claire O'Callaghan
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
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...
arxiv.org
October 21, 2025 at 6:10 AM
Reposted by Claire O'Callaghan
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).
October 14, 2025 at 11:05 AM
Reposted by Claire O'Callaghan
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/...
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
www.theguardian.com
October 11, 2025 at 3:05 PM
Reposted by Claire O'Callaghan
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
October 7, 2025 at 2:02 PM
Reposted by Claire O'Callaghan
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...
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…
www.sciencedirect.com
October 8, 2025 at 5:21 AM
Reposted by Claire O'Callaghan
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...
October 6, 2025 at 6:07 AM
Reposted by Claire O'Callaghan
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
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...
dx.plos.org
October 2, 2025 at 6:02 PM
Reposted by Claire O'Callaghan
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...
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...
www.biorxiv.org
October 3, 2025 at 1:46 AM
Reposted by Claire O'Callaghan
🚨 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...
October 2, 2025 at 11:50 AM
Reposted by Claire O'Callaghan
You can sign up for the early access to the new Sea Hero Quest:
seaheroquest.com
October 1, 2025 at 9:52 AM
Reposted by Claire O'Callaghan
📢 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...
OHBM Australia: 2025 Annual Meeting
OHBM Australia: Uniting the Australian human brain mapping community
ohbm-aus.github.io
September 23, 2025 at 6:18 AM
Reposted by Claire O'Callaghan
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
September 18, 2025 at 7:56 PM
Reposted by Claire O'Callaghan
🔵 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...
www.biorxiv.org
September 17, 2025 at 5:44 AM
Reposted by Claire O'Callaghan
Don't forget! Abstracts due Sept 22 📝
Don’t miss out!
✨✨ 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! 🤩
September 16, 2025 at 1:58 AM
Reposted by Claire O'Callaghan
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...
September 14, 2025 at 11:35 AM
Reposted by Claire O'Callaghan
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

🧠📈
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...
www.biorxiv.org
September 13, 2025 at 2:38 AM
Reposted by Claire O'Callaghan
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...
ASPP 2025 Melbourne
Australasian Society for Philosophy and Psychology 2025 Conference Melbourne, November 24th - 25th, 2025
sites.google.com
September 11, 2025 at 11:20 AM
Reposted by Claire O'Callaghan
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...
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...
www.biorxiv.org
September 8, 2025 at 4:34 PM
Reposted by Claire O'Callaghan
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...
1/10
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...
www.biorxiv.org
September 6, 2025 at 1:12 PM
Reposted by Claire O'Callaghan
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...
September 2, 2025 at 8:09 AM
Reposted by Claire O'Callaghan
🚨🚨🚨 Don't forget our annual meeting is coming up! Registration and abstract submission is open!🚨🚨🚨
✨✨ 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! 🤩
September 2, 2025 at 4:35 AM