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Reposted by Jörn Diedrichsen

Andrew Pruszynski @andpru.bsky.social · 7d

We will have an NHP position open at @westernu.ca this year. Posting is coming soon. If you're interested about our setup and the opportunities here, feel free to get in touch.

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · 22d

The main lesson is that "unique variance" is highly dependent on which other regressors we consider. That's a problem, as we never can be quite sure what the correct model is. Bayesian model averaging can at least integrate out some of that uncertainty. We hope to have the manuscript out soon!

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · 22d

I guess you could think about the "shared variance" as a lower bound for the overlap between regressors. However, for this to be a real bound, you would need a strong theoretical basis to distinguish overlap and suppression. There is none (I know of) - it just boils down to geometry (Fig. 3).

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · 28d

Variance partitioning is used to quantify the overlap of two models. Over the years, I have found that this can be a very confusing and misleading concept. So we finally we decided to write a short blog to explain why.
@martinhebart.bsky.social @gallantlab.org
diedrichsenlab.org/BrainDataSci...

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · Sep 8

Exited to share tomorrow new updates on trying to figure out how the neocortex and cerebellum talk to each other. Work by @carobellum.bsky.social, Ali Shabazi, and others in the lab!

Reza Shadmehr @rezashadmehr.bsky.social · Sep 4

To understand cortico-cerebellar connectivity in humans, the usual approach is to exploit the correlations of functional brain imaging signals during rest.
In this talk, Jorn Diedrichsen will present results suggesting that a better approach is to measure co-activation during specific tasks.

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · Sep 6

Amazing new paper - such a pleasure to be involved! With so much and clean neuropixel data - analysis becomes a completely different game…

Mehrdad Kashefi @mkashefi.bsky.social · Sep 6

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...

www.biorxiv.org

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Western University @westernu.ca · Aug 23

Four #WesternU faculty members were recognized by the Ontario government with Early Researcher Awards. Congratulations to Liliana Alvarez, Thomas DeFalco, Yalda Mohsenzadeh and Lyle Muller. 👏 #PurpleAndProud

Early Researcher Awards recognize Western faculty - Western News

Early Researcher Awards from Ontario government fund four Western faculty projects tackling youth impaired driving, plant resilience, dementia and memory

buff.ly

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assafbreska.bsky.social @assafbreska.bsky.social · Aug 20

We’re hiring! 🥳fully funded PhD and postdoc positions in human cognitive neuroscience @mpicybernetics.bsky.social

M/EEG and brain stimulation methods to study timing/ prediction/ attention/ oscillations
tinyurl.com/5dku4du9

@timingresforum.bsky.social @gtc-tuebingen.bsky.social

please repost 🙏

PhD and Postdoc Positions (m/f/d) in Human Cognitive Neuroscience of Dynamic Cognition – M/EEG, brain stimulation

Job Offer from August 11, 2025

tinyurl.com

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Reposted by Jörn Diedrichsen

Ravi Menon, Ph.D. @northernthrux.bsky.social · Aug 19

Please repost. The Centre for Functional and Metabolic Mapping is looking for a Preclinical MRI physicist (9.4T and 15.2T Bruker Advance Neo). You will join a team of 14 dedicated staff in Canada's National Ultra-high field MRI platform who also operate 3T and 7T human scanners in the same facility.

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · Aug 11

And Functional Fusion is our Python toolbox and Data-sharing framework that allows you to have fMRI contrast maps from ~200 subjects and ~450 different tasks for any arbitrary atlas space (surface, volume, ROI) at your finger tips in a few minutes.
functional-fusion.readthedocs.io

Functional Fusion Framework — Functional Fusion Framework v.1.0 documentation

functional-fusion.readthedocs.io

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · Aug 11

Just in time we also released 2 important toolboxes that make it easy to collect fMRI contrast from many tasks efficiently from the same subject:
The MultiTaskBattery project (multitaskbattery.readthedocs.io) allows you to pick the tasks you want and be at the scanner within 1 hr!

Multi Task Battery experiments — MultiTaskBattery v.0.9.0 documentation

multitaskbattery.readthedocs.io

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · Aug 11

Are broad task batteries better than resting-state fMRI to learn something general about the human brain? If you are at #CCN2025 come by @basselarafat.bsky.social and @carobellum.bsky.social poster on Tuesday and Wednesday! @cogcompneuro.bsky.social

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · Aug 11

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...

Figure 3d,e: Superficial arteries (red) and veins (blue).

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layerfmri.bsky.social @layerfmri.bsky.social · Jul 2

New high resolution fMRI paper describing the capabilities and challenges of 9.4T fMRI in the cerebellum.
By van der Zwaag et al., (@highonfield.bsky.social, @nikospriovoulos.bsky.social)

doi.org/10.1002/mrm....

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Rhodri Cusack @rhodricusack.bsky.social · Jul 19

Ireland launches global talent fund! www.researchireland.ie/funding/glob...
If you're a neuroscience professor (assistant/associate/full) and would consider relocating to the vibrant and booming city of Dublin, please get in touch!

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · Jul 21

Careful dissection of motor sequence learning by @andpru.bsky.social and @mkashefi.bsky.social. In my humble opinion this should be an instant classic 😏.

www.jneurosci.org/content/earl...

Motor sequence learning involves better prediction of the next action and optimization of movement trajectories

Learning new sequential movements is a fundamental skill for many animals. Motor sequence learning may arise from three distinct processes: (1) improved execution of individual movements independent o...

www.jneurosci.org

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · Jul 21

Congrats to @alighavampour.bsky.social and @mnlmrc.bsky.social for developing a new paradigm for hand synergy learning. If you are looking for a motor skill task that seems impossibly difficult and really needs to learning to be mastered, here it is:
journals.physiology.org/doi/full/10....

A paradigm to study the learning of muscle activity patterns outside of the natural repertoire | Journal of Neurophysiology | American Physiological Society

The acquisition of novel muscle activity patterns is a key aspect of motor skill learning, which can be seen, for example, when beginner musicians learn new guitar or piano chords. To study this proce...

journals.physiology.org

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Caroline Nettekoven @carobellum.bsky.social · Jul 5

Landed at the Cerebellum GRC in Switzerland, where the science is high-level and so are the altitudes.

Very ready for this week's deep dives into cerebellar function, alongside some excellent bovine branding. 🐄🧠

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Paul Gribble 🇨🇦 @gribblelab.org · May 23

This week's sensorimotor superlab reading list is out https://superlab.ca/posts/2025-05-23-list296.html @andpru.bsky.social @diedrichsenjorn.bsky.social @gribblelab.org #neuroskyence #psychscisky #Sensorimotor

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Jörn Diedrichsen @diedrichsenjorn.bsky.social · May 8

Another outstanding recognition for our amazing postdoc @carobellum.bsky.social ! Can‘t believe that she will be leaving the lab in just over a month. She will leave a big carobellum-shaped hole.

Western Institute for Neuroscience (WIN) @westernuwin.bsky.social · May 7

Three WIN Trainees Awarded 2024 CAN-CIHR-INMHA Brain Star Awards🧠🌟 from the Canadian Association for Neuroscience! Congratulations to Caroline Nettekoven, Diego Piza, and Hayley Shanks!! Read the news release on our website!! shorturl.at/wzJYu

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Paul Gribble 🇨🇦 @gribblelab.org · Apr 25

This week's sensorimotor superlab reading list is out https://superlab.ca/posts/2025-04-25-list292.html @andpru.bsky.social @diedrichsenjorn.bsky.social @gribblelab.org #neuroskyence #psychscisky #Sensorimotor

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Paul Gribble 🇨🇦 @gribblelab.org · Apr 4

This week's sensorimotor superlab reading list is out @andpru.bsky.social @diedrichsenjorn.bsky.social @paulgribble.bsky.social #neuroskyence #psychscisky #Sensorimotor https://superlab.ca/posts/2025-04-04-list289.html

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Andrew Pruszynski @andpru.bsky.social · Mar 29

On today -- a new view on the most classical of all motor cortical questions.

Mehrdad Kashefi @mkashefi.bsky.social · Mar 27

Heading to #cosyne2025 ?

We're presenting new data exploring the geometry of neural dynamics in M1, PMd, PFC, SMA, and GPi during reaching movements with varying start locations, directions, and extents.

Find me at Poster Session 3-091 — or anytime before or after!

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Paul Gribble 🇨🇦 @gribblelab.org · Mar 28

This week's sensorimotor superlab reading list is out @andpru.bsky.social @diedrichsenjorn.bsky.social @paulgribble.bsky.social #neuroskyence #psychscisky #Sensorimotor https://superlab.ca/posts/2025-03-28-list288.html

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Andrew Pruszynski @andpru.bsky.social · Mar 24

Going to #Cosyne2025? Check out two posters from the lab, presented by @jonathanamichaels.bsky.social and @mkashefi.bsky.social.

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