@sidrees88

NeuroAI Scientist | Senior Research Scientist in JZlab, York University, Toronto Co-founder Chishm Foundation, Pakistan

 Toronto, Canada
chishm.org
Joined March 2019
  • Tweets147
  • Following261
  • Followers129
Saad Idrees retweeted
Ziad Hafed@HafedLab13 Jun 2025
Saccadic suppression was demonstrated in many species. In a new paper, using modeling and matched experimental paradigms in fish and primates, we explored the reasons for why saccadic suppression strength might be different in different organisms. biorxiv.org/content/10.1101/…

Species-specific oculomotor control tolerances predict saccadic suppression strength in macaques...

Active sensing necessarily requires integrating information about both self-generated movements as well as past, present, and future afferent inputs[1][1],[2][2]. However, such information is...

biorxiv.org
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A paper from my postdoc is out! nature.com/articles/s41467-0… How does the premotor cortex reuse the neural representation of single finger movements for simultaneous, multi-finger movements? TLDR: Ensemble activity for simultaneous movements can be explained by linear summation of corresponding single-finger movements and magnitude normalization (so that the activity does not blow up as more fingers are moved).

Pseudo-linear summation explains neural geometry of multi-finger movements in human premotor cortex

Nature Communications - Here, the authors show that Intracortical recordings in human motor cortex during attempted multi-finger movements reveal a largely linear code with two violations:...

nature.com
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Saad Idrees retweeted
Adeel Razi@adeelrazi26 May 2025
🧵Training binary or spiking neural networks is hard. Gradients vanish, surrogates are noisy, batchnorm is brittle. We propose a Bayesian approach based on KL divergence minimization—and it works. Paper: arxiv.org/abs/2505.17962 Work by James Walker % @MKhajehnejad 1/6

A Principled Bayesian Framework for Training Binary and Spiking...

We propose a Bayesian framework for training binary and spiking neural networks that achieves state-of-the-art performance without normalisation layers. Unlike commonly used surrogate gradient...

arxiv.org
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Saad Idrees retweeted
Ziad Hafed@HafedLab1 Mar 2025
New paper demonstrating saccadic suppression in zebrafish, as well as an intriguing selectivity for specific stimuli. In upcoming work, we'll also quantitatively compare the zebrafish suppression strength to that in primates. biorxiv.org/content/10.1101/…

Saccadic Suppression Enhances Saliency of Prey-Like Stimuli in the Optic Tectum

Saccadic suppression, a reduction in visual sensitivity around the time of a rapid eye movement, is a robust perceptual phenomenon, extensively studied in primate psychophysics. However, the mechan...

biorxiv.org
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OpenAI and DeepSeek’s reasoning LLMs have scored impressively on benchmarks that challenge humans, but how robust are their fundamentals? We test o1-mini & R1 on small-scale graph coloring problems and find limited reliability and signs of issues with non-linear reasoning. (1/10)
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We have a new PhD position available. Please spread the word and retweet. The project will combine retina recordings, computational modeling, and optogenetics to help further develop vision restoration therapy. See here for more information: retina.uni-goettingen.de/joi…
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We are happy to announce our first in-house conference! We are preparing an outstanding speakers lineup. Stay tuned!
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My lab has a funded PhD position open now. Apply by Nov 30th: linkedin.com/posts/petri-ala…

#hiring | Petri Ala-Laurila

I’m #hiring. Know anyone who might be interested?

linkedin.com
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Life update! I’ve joined the Amaranth Foundation as a NeuroAI researcher. I'll work on an ambitious roadmap for neuroscience for AI safety 🎉 1/ amaranth.foundation

Amaranth Foundation - Longevity and Neuroscience

Amaranth Foundation funds groundbreaking work in longevity and neuroscience. Learn more about our grants, projects, and team .

amaranth.foundation
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Exciting work with @MikeManookin, Fred Rieke, @GregDField, & Joel Zylberberg is now out in @NatureComms! We developed a new ANN with biophysical neural adaptation for better retinal response predictions to dynamic input. nature.com/articles/s41467-0… #NeuroAI #DeepLearning

Biophysical neural adaptation mechanisms enable artificial neural networks to capture dynamic...

Nature Communications - Neural adaptation, crucial for sensory processing, is absent in conventional machine learning models of the visual system. Here the authors show that adding photoreceptor...

nature.com
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Saad Idrees retweeted
Ziad Hafed@HafedLab17 Jul 2024
Our recent take on a recent paper by Zhang and colleagues on saccadic suppression. journals.physiology.org/doi/… hafedlab.org/2024/07/17/visu…

Not so early! Revisiting the question of visual pathway selectivity of saccadic suppression |...

journals.physiology.org
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Saad Idrees retweeted
IOB.ch
@IOB_ch3 Jul 2024
👏Congratulations to Botond Roska and José-Alain Sahel, 2024 Wolf Prize Laureates in Medicine! For more information wolffund.org.il/botond-roska… wolffund.org.il/jose-alain-s……… #TranslationalNeuroscience #Optogenetics #IOB
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New preprint @biorxiv_neursci w/ @AToliasLab & more Our data-driven deep learning approach in🐭🐒identifies a new rule of contextual modulation in visual cortex Pattern completion/disruption wrt natural image stats = surround facilitation/suppression🧵👇 biorxiv.org/content/10.1101/…
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Tübinger Paläogenetiker erhält Preis der Heidelberger Akademie der Wissenschaften: Cosimo Posth entschlüsselt die menschliche genetische Vielfalt der Vergangenheit. Herzlichen Glückwunsch zur Auszeichnung! 👏 uni-tuebingen.de/universitae… #uni_tue #archäologie @Senckenberg @hadw_bw
Preisträger Cosimo Posth. Foto: Friedhelm Albrecht/Uni Tübingen

ALT Preisträger Cosimo Posth. Foto: Friedhelm Albrecht/Uni Tübingen

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New paper from the lab 🥳 @NatureNeuro The 'internal compass' can do more than tracking head-direction (HD) 👉 thalamic HD cells respond to sensory stimuli and are modulated by behavioral state (e.g. during social interactions) nature.com/articles/s41593-0…
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Pleased that York PhD grad @BBaltaretu just published her final thesis chapter: "Occipital and parietal cortex participate in a cortical network for transsaccadic discrimination of object shape and orientation"nature.com/articles/s41598-0…
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Araceli Cardenas, a trainee with the ⁦@neuron2brain⁩ ⁦lab @KBI_UHN⁩ working with ⁦@DrValiante⁩, wows the crowd with a presentation on how intracranial recordings show the positive impact of exercise on cognition. #KrembilResearchDay2023
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Exercise modulates human hippocampal-cortical ripple dynamics biorxiv.org/cgi/content/shor… #biorxiv_neursci
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I am extremely delighted to share that our work on "Multidimensional cerebellar computations for flexible control of movements” is now published in @NatureComms. Many thanks to my coauthors, @sungho_hong_ , @erik_deschutter , Junya Inoue & Peter Thier! nature.com/articles/s41467-0…
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