🐁🧠 Results are for a mouse cortex IBEAM-mSEM volume. Work is a collaboration between @GoogleAI & the Hess lab at @HHMIJanelia, who pioneered this EM technique. More soon!

We find an OOM reduction in splits while maintaining mergers low enough that the traced axons should be useful for automated analysis or serve as an excellent starting point for further manual corrections.

We focus on the most challenging type of reconstruction (axon tracing) and evaluate PATHFINDER on a scale that ensures statistical significance and lack of bias (over 4 m total path length, all axons in the volume).

FFN v1.5 segments the volume EM images. Then SENSE defines the agglomeration space. Finally, SHAPE guides an efficient combinatorial search for optimal, morphologically plausible reconstructions.

PATHFINDER is an AI system designed to address this. It uses specialized models (FFN v1.5, SENSE, SHAPE) to process data across progressively larger spatial scales, currently up to the range of tens of microns.

Connectomics has made huge strides in recent years. But we can acquire data far faster than we can analyze it. With even insect brains requiring tens of years of manual corrections, proofreading remains a critical and expensive bottleneck, and a mouse brain seems out of reach.