Jacopo Razzauti's Avatar

Jacopo Razzauti

@jacoporazzauti

PhD student at the Rockefeller University

245
Followers
114
Following
28
Posts
20.11.2024
Joined
Posts Following

Latest posts by Jacopo Razzauti @jacoporazzauti

Preview
Mechanical Engineer, Hardware Systems - Card Lab Primary Work Address: 100 Haven Avenue, New York, NY, 10032 Current HHMI Employees, click here to apply via your Workday account. The Howard Hughes Medical Institute (HHMI) advances the discovery and ...

The Card lab at Columbia Univ (NYC) is hiring a mechanical engineer! If you like tinkering with mechanical systems and want to help us build custom rigs for neuroscience research, this job is for you! Please feel free to pass along to interested folks.

hhmi.wd1.myworkdayjobs.com/en-US/Extern...

26.02.2026 16:02 πŸ‘ 3 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Drift in Individual Behavioral Phenotype as a Strategy for Unpredictable Worlds

Behavioral biases drift in individuals.

β€’Β Drift happens on many timescales
β€’ Drift rate depends on genetics and neuromodulators
β€’ It might be adaptive for rapidly changing environments

elifesciences.org/reviewed-pre...

12.02.2026 15:04 πŸ‘ 47 πŸ” 14 πŸ’¬ 1 πŸ“Œ 0

πŸŽ‰ Thrilled to see our #MosquitoCellAtlas featured on the cover of @cp-cell.bsky.social ! This mosaic represents 367K cells across 19 tissues, unveiling the complex biology that makes mosquitoes the world's deadliest animals. Beautiful art by @somedonkey.bsky.social meets the #Vosshalllab science! 🦟🎨

11.12.2025 16:28 πŸ‘ 18 πŸ” 9 πŸ’¬ 2 πŸ“Œ 0

It might actually work better on humans as the original training dataset contains a lot more humans than ants videos!

20.11.2025 10:31 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Thank you! We have not tried on humans ourselves but there is no reason why FERAL could not work on human behavior videos! We just like ants videos more (who wouldn't?)

20.11.2025 10:30 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

That sounds cool! Feel free to reach out if you have any questions! We would love to see the videos of hermit crabs

20.11.2025 10:29 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

We dooooo

19.11.2025 22:10 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Finally me and Peter would like to thank all our collaborators and colleagues who helped! Especially @leslievosshall.bsky.social and the members of the Vosshall lab! This work would have never been possible without their support, help and passion for animals (with a obvious bias toward mosquitoes)

19.11.2025 18:30 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
FERAL Documentation

But what we are really interested in seeing is what sort of behaviors and recordings the community will try it on!

Check out FERAL

Preprint: www.biorxiv.org/content/10.1...
Code + Docs: www.getferal.ai

Feel free to contact us with any feedback, question or suggestion!

19.11.2025 18:30 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Post image

🐜 Emergent collective behavior

Finally, with @tomaskay.bsky.social we asked whether FERAL can detect collective dynamics directly from raw frames.

We annotated raiding phases in colonies of ants.
FERAL identifies the onset and duration of colony raids and collective behavior without tracking!

19.11.2025 18:30 πŸ‘ 6 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Video thumbnail

🦍 Camera-trap footage of chimpanzees & gorillas (PanAf500)

We pushed FERAL to handle multi-species, multi-behavior field recordings: day and night, dense vegetation, variable lighting.
FERAL achieves strong accuracy even for visually rare but distinct behaviors like climbing up/down.

19.11.2025 18:30 πŸ‘ 5 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

This is also a great example of how tracking and FERAL are complementary:
➑️ track the animal to get WHERE it is
➑️ apply FERAL to its video crop to get WHAT it’s doing

(We think this two-step approach has great potential, so if you are interested in this stay tuned)

19.11.2025 18:30 πŸ‘ 4 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
Post image

FERAL goes wild:
πŸ¦“ Drone footage of Grevy’s zebras (with @blaircostelloe.bsky.social, Ben Koger and @icouzin.bsky.social)

Pose-estimation pipelines struggled to detect vigilance behavior from overhead drone videos.
FERAL identifies vigilance bouts directly from video.

19.11.2025 18:30 πŸ‘ 6 πŸ” 3 πŸ’¬ 1 πŸ“Œ 2
Video thumbnail

Ant social interactions (with Janet Zhao & Dominic Frank)

Next we wanted to try FERAL on recordings of social behavior. FERAL detects both self-grooming and allogrooming directly from raw video, even with occlusions and two animals with very different shapes.

19.11.2025 18:30 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Video thumbnail

How does FERAL perform on lab recordings?

πŸͺ± C. elegans locomotion (with Friederike Buck)

FERAL incorporates temporal dynamics in its learning. In this dataset, it separates forward and reverse crawling: behaviors that look nearly identical frame-to-frame, but are revealed by temporal dynamics!

19.11.2025 18:30 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Video thumbnail

Performance

On benchmarks, FERAL beats both pose- and video-based baselines: 94.5% mAP on CalMS21 (mouse social interactions). Outperforms Google’s VideoPrism while using only 25% of the data.
Here’s a snippet of FERAL segmenting mouse social behavior:

19.11.2025 18:30 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
FERAL Documentation

Give FERAL:
1. videos
2. behavioral annotations

FERAL fine-tunes a video foundation model on your data.

FERAL outputs:
- segmented ethograms
- model weights you can reuse

All in few lines of code (no ML or coding expertise needed). It runs easily on Google Colab.

Try it yourself: www.getferal.ai

19.11.2025 18:30 πŸ‘ 7 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
Preview
FERAL: A Video-Understanding System for Direct Video-to-Behavior Mapping Animal behavior unfolds continuously in time, yet quantitative analyses often require segmenting it into discrete, interpretable states. Although manual annotation can achieve this, it remains slow, s...

Our preprint is out! www.biorxiv.org/content/10.1...
Peter Skovorodnikov and I are excited to present FERAL: a new video-understanding toolkit that maps raw video directly to behavior, no pose estimation required.
It works across species, from lab to field, and even in collective systems. (🧡1/n)

19.11.2025 18:30 πŸ‘ 39 πŸ” 20 πŸ’¬ 4 πŸ“Œ 2
Post image

#sfn2025 three fun posters from us today: theory work by @rgast.bsky.social on the effects of neural heterogeneity on computation, a hippocampus+feeding collab with @liye-tsri.bsky.social , and LLMs for pose interpretation in rehabilitation data with @peabody124.bsky.social

17.11.2025 23:10 πŸ‘ 17 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
Post image

#SfN25 stop by board ZZ5! We are presenting FERAL!

17.11.2025 16:25 πŸ‘ 11 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
Post image

As you can see in this pic we practiced this presentation a lot and we also have some FERAL tshirts! #getferalatSfN

17.11.2025 08:14 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Video thumbnail

#SfN25 Monday morning we present FERAL: a video-understanding tool for animal behavior detection without the need for tracking or pose estimation! FERAL detects single animal, social and collective behavior in the lab and the wild! Visit our poster at board ZZ5 and check more here: www.getferal.ai

17.11.2025 08:11 πŸ‘ 17 πŸ” 10 πŸ’¬ 2 πŸ“Œ 0
Preview
A single-nucleus transcriptomic atlas of the adult Aedes aegypti mosquito A comprehensive single-nucleus RNA-seq atlas of >367,000 nuclei from male and female Aedes aegypti mosquitoes reveals sexual dimorphism in sensory systems and brain cell types and widespread co-expres...

Excited to announce the final version of the Mosquito Cell Atlas is out now in @cellpress.bsky.social!! 🦟🩸

There is SO much left to find & investigate in this dataset (& the rich biology of the Aedes aegypti mosquito)! We hope this helps scientists in many fields!
www.cell.com/cell/fulltex...

30.10.2025 16:05 πŸ‘ 65 πŸ” 28 πŸ’¬ 2 πŸ“Œ 4
The male genitalia of an 𝘈𝘦π˜₯𝘦𝘴 𝘒𝘭𝘣𝘰𝘱π˜ͺ𝘀𝘡𝘢𝘴 mosquito

The male genitalia of an 𝘈𝘦π˜₯𝘦𝘴 𝘒𝘭𝘣𝘰𝘱π˜ͺ𝘀𝘡𝘢𝘴 mosquito

What does mating look like when you only have a single shot at getting it right?

Very excited to share our work on an almost-invisible female control, rapidly evolving mating recognition systems, and species that break the rules and take over the world. IN MOSQUITOES>

28.10.2025 20:57 πŸ‘ 64 πŸ” 28 πŸ’¬ 5 πŸ“Œ 1
Preview
A rapidly evolving female-controlled lock-and-key mechanism determines Aedes mosquito mating success Houri-Zeevi et al. uncover a lock-and-key mating system in mosquitoes, where females control mating through genital responses to rapidly evolving male structures. Males of the invasive Asian tiger mos...

New
@currentbiology.bsky.social paper from @leslievosshall.bsky.social&@leahhouri.bsky.social: FEMALE mosquitoes control mating, not males, by special genital movement. No elongation = no mating! Plus: male asian tiger mosquitoes can bypass the yellow fever mosquito female control shorturl.at/tsIWH

28.10.2025 19:56 πŸ‘ 17 πŸ” 8 πŸ’¬ 0 πŸ“Œ 0
This is extended data figure 9, which shows a reconstruction of the plumage of Archaeopteryx by Michael Rothman.

This is extended data figure 9, which shows a reconstruction of the plumage of Archaeopteryx by Michael Rothman.

A paper in Nature presents a suite of previously unknown features belonging to the oldest known fossil bird, Archaeopteryx. Analysis of the Chicago Archaeopteryx shows new information about the skeleton, soft tissues and plumage of this iconic taxon. go.nature.com/4jNZIJg #Paleosky πŸ§ͺ

27.05.2025 01:47 πŸ‘ 57 πŸ” 11 πŸ’¬ 0 πŸ“Œ 1
Post image

#πŸͺΆ

19.05.2025 01:48 πŸ‘ 7 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Post image

The Rockefeller Uni ducklings are back!

19.05.2025 01:46 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Post image

#birds

20.04.2025 21:41 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Post image Post image Post image

#birds

19.04.2025 02:01 πŸ‘ 12 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0