*A community benchmark enables high-resolution, cross-lab quantification of mouse social behavior* Introducing HiDRA: 82 supervised classifier heads for 33 dyadic and solitary behaviors. Works out-of-the-box on new data and outperforms video foundation models. neuroethology.github.io/hidra-site/

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Fantastic work by this @ucsandiego.bsky.social crew

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Super excited about this new work from @annhuang42.bsky.social! We developed a method for identifying different solutions to a task in neural networks of all types by walking along the flat directions of the loss landscape. Doing so revealed a ton of hidden solutions nearby in weight space!

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Our paper is out in Nature, congrats to Qiyu, An et al! By stimulating ~20 motor cortex neurons carefully selected based on their activity, we could induce learned population activity and, sometimes, the movement itself, depending on the brain's state. www.nature.com/articles/s41...

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Almost four years ago, An and I were just starting to prepare this manuscript when tragedy struck. Since then, Qiyu and the team have worked extremely hard to bring this study to light. I could not be more proud of them.

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