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UCL Team Reconstructs 10-Second Videos From Mouse Brain Activity

A behavior-aware encoding model applied to single-cell calcium imaging enables reconstruction of unseen clips.

Overview

  • Researchers recorded activity of individual visual-cortex neurons via calcium imaging as mice watched films, then decoded vision with a dynamic model that incorporates movement and pupil data.
  • The team began from a blank-screen prediction and iteratively updated pixels using differences from measured activity, producing reconstructions of new 10-second clips.
  • Reconstruction fidelity increased with more neurons sampled, and similarity was assessed via pixel-by-pixel correlation between original and reconstructed frames.
  • Temporal alignment between videos was strong, whereas spatial resolution and visual field coverage remain limited and are the next targets for improvement.
  • The peer-reviewed study by Joel Bauer and colleagues appears in eLife (2026, DOI: 10.7554/eLife.105081.3) and outlines potential for studying comparative perception and visual disorders.