AVATAR: AI Vision Analysis for Three-dimensional Action in Real-time

Artificial intelligence (AI) is an emerging tool for high-resolution behavioural analysis and conduction of human-free behavioural experiments. Here, we applied an AI-based system, AVATAR, which automatically virtualises 3D motions from the detection of 9 body parts. This allows quantification, classification and detection of specific action sequences in real-time and facilitates closed-loop manipulation, triggered by the onset of specific behaviours, in freely moving mice. ### Competing Interest Statement The authors declare the following competing interests: D-G Kim and D-S Kim are founders of the company AVATAR. The other authors declare no competing interests.