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Alex Wiesman

@alexwiesman

Scientist studying neural dynamics in Parkinson's disease at SFU. Tryhard home cook | sci-fi nerd | movie buff. Views my own.

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13.09.2023
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Latest posts by Alex Wiesman @alexwiesman

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Check this πŸ‘‡πŸ½ out if you’re interested in brain resilience & aging. #cns2026 @cogneuronews.bsky.social

08.03.2026 05:14 πŸ‘ 15 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0
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I couldn't find a tool to plot different #neuroimaging data in one consistent style, so I made one! Meet yabplot (yet another brain plot) - a #Python package for (sub)cortex & tracts.🧠
- Simple API
- Built-in atlases
- Custom atlas support
πŸ”— github.com/teanijarv/ya... (drop a ⭐️!)

02.03.2026 13:37 πŸ‘ 57 πŸ” 22 πŸ’¬ 1 πŸ“Œ 0
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Spatial Null Models and Transforms for Brain Map Comparison Implements spatial null models and coordinate-space transformations for statistical comparison of brain maps, following the framework described in Markello et al. (2022)…

neuromapr 0.2.1 has been accepted and published on CRAN!

Very excited to get this out to users in the simplest way possible, and hope the #rstats #neuroimaging community finds it useful!

lcbc-uio.github.io/neuromapr/

28.02.2026 20:41 πŸ‘ 22 πŸ” 10 πŸ’¬ 0 πŸ“Œ 0
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@francescafardo.bsky.social, Camilla E. Krænge & colleagues on evidence accumulation in temperature perception. Distinct roles for spatial summation and lateral inhibition. Really nice work, great collab: www.sciencedirect.com/science/arti...

25.02.2026 11:55 πŸ‘ 6 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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a man wearing headphones is sitting in front of a microphone . ALT: a man wearing headphones is sitting in front of a microphone .

New preprint πŸ“£

Do you use the @alleninstitute.org mouse brain connectome?

In work led by Vikram Nathan we found issues with existing connectome representations, fixed them, showed the impact on connectome measures.

Do you wonder what they are?
Do you wonder what they do?

tinyurl.com/5y9mft4e

24.02.2026 09:22 πŸ‘ 14 πŸ” 5 πŸ’¬ 1 πŸ“Œ 1
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Anatomic & functional brain atlases: connecting functional flexibility with fixed infrastructure - Brain Structure and Function Brain Structure and Function - Recent advancements in imaging across scales has propelled the development of anatomic brain atlases reflecting a wide range of cellular properties. It’s...

It's important to note that when discussing brain structure-function relationships across scales, that the definition of function changes with scale. Keep it straight! @sbe.bsky.social link.springer.com/article/10.1...

23.02.2026 18:10 πŸ‘ 8 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0

1) participants' metadata, in particular demographics, are a bigger risk for privacy 2) we have created a new metric k-global that gives you the relative importance of each variable for anonymity and 3) BIDS compliant little python package to help everyone with data curation.

21.02.2026 19:20 πŸ‘ 5 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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"You see what you look for, and you look for what you know."

We are proud to release FOCUS: a 100 ΞΌm deformable human subcortical atlas precisely registered to MNI space.

www.biorxiv.org/content/10.6...

20.02.2026 12:28 πŸ‘ 86 πŸ” 39 πŸ’¬ 4 πŸ“Œ 1
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The Brain Resilience Study protocol: Building a dataset of the biological and sociocultural factors affecting brain health in older adults Dementia arises from a complex interplay of biological, psychological, and sociocultural factors. However, previous large-scale studies have largely f…

Here is the link to our "The Brain Resilience Study protocol," an ongoing project through the @sfuneuro.bsky.social

www.sciencedirect.com/science/arti...

16.02.2026 17:34 πŸ‘ 21 πŸ” 9 πŸ’¬ 1 πŸ“Œ 1
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Inter-individual variability of neurotransmitter receptor and transporter density in the human brain | doi.org/10.1007/s004...

How do neuroreceptor distributions vary across people?

13.02.2026 15:14 πŸ‘ 34 πŸ” 14 πŸ’¬ 1 πŸ“Œ 0
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Ever wondered how the Dalmatian Dog effect works?

The human brain can quickly learn from a single experience and generalize it to related experiences β€” an impressive feat so far not matched by AI.

Our new paper in @natcomms.nature.com reveals how this works.
www.nature.com/articles/s41...

04.02.2026 17:00 πŸ‘ 84 πŸ” 33 πŸ’¬ 2 πŸ“Œ 4
The biological role of local and global fMRI BOLD signal variability in multiscale human brain organization - Nature Communications Baracchini et al. reveal that temporal variability in fMRI brain signals encodes biologically meaningful information across spatial and temporal scales, highlighting its role in healthy brain function...

Now in press one of my last PhD projects! We traced the neurobiological profile of fMRI BOLD signal variability, a measure that has been related to age, behaviour, disease status, but had not yet been fully contextualised within the brain's multiscale architecture. www.nature.com/articles/s41...

30.01.2026 21:33 πŸ‘ 38 πŸ” 14 πŸ’¬ 2 πŸ“Œ 1
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Preventing data leakage in neural decoding - "for autocorrelated neural time series, standard k-fold cross-validation can dramatically overstate performance." www.biorxiv.org/content/10.6...

30.01.2026 08:29 πŸ‘ 21 πŸ” 9 πŸ’¬ 0 πŸ“Œ 0
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Preprint alert!!! We recorded directly from the human ventral tegmental area (VTA), the principal source of cortical dopaminergic innervation, while patients performed an instrumental learning task. πŸ§΅πŸ‘‡

www.biorxiv.org/content/10.6...

28.01.2026 14:29 πŸ‘ 51 πŸ” 18 πŸ’¬ 1 πŸ“Œ 0
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If you're looking for a PhD and you're interested in the cerebellum, predictions, language, and MEG, please apply by 1st March! We have two open positions.

More details here:
benediktzoefel.wixsite.com/home/phd

28.01.2026 07:49 πŸ‘ 21 πŸ” 17 πŸ’¬ 1 πŸ“Œ 1
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PhD students: Do you have experience with structural or fMRI data analysis? Are you interested in data harmonization, open science, and cognitive aging? πŸ§ πŸ“Š πŸ’» If yes, this post-doc position in my lab is perfect for you!

Please share with your networks!

jobs-ca.silkroad.com/Baycrest/Car...

22.01.2026 13:55 πŸ‘ 15 πŸ” 22 πŸ’¬ 2 πŸ“Œ 0
Nine subcortical/cerebellar atlases included in the subcortex_visualization Python package (and subcortexVisualizationR package in R). The atlases are depicted in two-dimensional vector graphic format.

Nine subcortical/cerebellar atlases included in the subcortex_visualization Python package (and subcortexVisualizationR package in R). The atlases are depicted in two-dimensional vector graphic format.

The extended version of my thesis procrastination project/subcortex visualization package is out now in both Python and R, now that I’ve graduated 🀠 This figure shows the 9 atlases included (and counting)!

Preprint: www.biorxiv.org/content/10.6...
Website: anniegbryant.github.io/subcortex_vi...

27.01.2026 03:04 πŸ‘ 115 πŸ” 46 πŸ’¬ 3 πŸ“Œ 5
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Very pleased to see our review published in Nature Reviews Neuroscience today!

Here’s the link: trebuchet.public.springernature.app/get_content/...

23.01.2026 17:00 πŸ‘ 41 πŸ” 10 πŸ’¬ 2 πŸ“Œ 1
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Man Who Had Managed Mental Illness Effectively for Years Says ChatGPT Sent Him Into Hospitalization for Psychosis John Jacquez successfully managed a mental illness for years, he says. Then ChatGPT reinforced delusions, spiraling him into "AI psychosis."

The complaint β€œargues that GPT-4o is a β€˜defective’ and β€˜inherently dangerous’ product, and that OpenAI failed to warn users of foreseeable risks to their emotional and psychological health.”

21.01.2026 20:38 πŸ‘ 325 πŸ” 98 πŸ’¬ 6 πŸ“Œ 12
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Interpreting EEG requires understanding how the skull smears electrical fields as they propagate from the cortex. I made a browser-based simulator for my EEG class to visualize how dipole depth/orientation change the topomap.
dbrang.github.io/EEG-Dipole-D...

Github page: github.com/dbrang/EEG-D...

20.01.2026 17:00 πŸ‘ 124 πŸ” 49 πŸ’¬ 4 πŸ“Œ 1

New paper! πŸ“œπŸš¨

Our collaboration @sfu.ca @yaleschoolofmed.bsky.social @wakeforest.bsky.social UCSF and UTSW

πŸ—οΈ finding: aperiodic slowing indexes concussion and symptom severity in football players

Now published in open access @cp-iscience.bsky.social

www.cell.com/iscience/ful...

#neuroskyence

19.01.2026 21:40 πŸ‘ 8 πŸ” 1 πŸ’¬ 1 πŸ“Œ 1
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Thank you to @aaas.org for the opportunity to lead a new editorial pod at Science Advances on Systems, Computational, Neuro-AI & Neurotechnology (SCANN).
Top opportunity to highlight outstanding work at the intersection of neuroscience, computation, and emerging technologies. Send your papers now!

15.01.2026 00:26 πŸ‘ 14 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0
The Virtual Brain Node: Personalized Simulations for Cognitive Neuroscience Learn how to build and analyze personalized brain network models using TheVirtualBrain simulation software

The Virtual Brain Node | CNS 2026 Satellite Event

March 6, 2026| Vancouver, BC| 9:00 AM–5:00 PM

One-day hands-on workshop with INN at CNS 2026. Learn resting-state modelling, nonlinear dynamics, and TVB architecture.

Open to all | Limited spots

Register: tvbnode-cns2026.eventbrite.ca

14.01.2026 01:23 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

This paper had a pretty shocking headline result (40% of voxels!), so I dug into it, and I think it is wrong. Essentially: they compare two noisy measures and find that about 40% of voxels have different sign between the two. I think this is just noise!

05.01.2026 17:22 πŸ‘ 238 πŸ” 99 πŸ’¬ 8 πŸ“Œ 9
Canada Impact+ Research Chairs

Great opportunity to come our way and do some cool science with us. It's not just neuroscience - see the posting for the key research areas.

www.sfu.ca/vpacademic/a...

19.12.2025 01:50 πŸ‘ 8 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0

Our INN Annual Report is out! This year’s report highlights our key achievements, major milestones, and the impactful work of our community over the past year. Learn more: www.sfu.ca/content/dam/...

17.12.2025 18:25 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 1
Diedrichsenlab

The Sensorimotor Superlab with @gribblelab.org and @andpru.bsky.social is a unique place to work and learn. We are now accepting MSc and PhD applications for Fall 2026. Join our awesome team at Western University... For application instructions see diedrichsenlab.org and gribblelab.org/join.html!

24.11.2025 22:50 πŸ‘ 31 πŸ” 25 πŸ’¬ 1 πŸ“Œ 2
Administrative Opportunities

πŸ“£We have 2 open faculty positions for senior researchers in Neuroscience at Queen's University!

healthsci.queensu.ca/administrati...

1. a new Director for our Centre for Neuroscience Studies
2. a non-human primate NeuroAI researcher

Please share widely and reach out for questions!

09.12.2025 18:55 πŸ‘ 48 πŸ” 65 πŸ’¬ 1 πŸ“Œ 4

Grateful to be involved in this gargantuan effort by the inimitable @jasondasilvac.bsky.social

Characterizing the MEG brain fingerprint across the lifespan in N > 1000 🀯

15.12.2025 17:30 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Very proud to announce that the final chapter of my thesis is now out in Cell Reports! How do neurophysiological traits that characterize individuals evolve across the lifespan? We combined data from over 1,000 individuals aged 4–89 to answer this question. (1/6) πŸ§ πŸ‘ΆπŸ‘¦πŸ‘§πŸ‘±πŸ‘©β€πŸ¦±πŸ§”β€β™‚οΈπŸ§“πŸ‘΄
doi.org/10.1016/j.ce...

15.12.2025 14:42 πŸ‘ 15 πŸ” 8 πŸ’¬ 1 πŸ“Œ 2