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Google Research and HHMI Janelia have published a complete connectome of the male fruit fly brain, mapping 166,000 neurons and 125 million synaptic connections. The achievement demonstrates how AI-assisted brain mapping of smaller organisms can reveal fundamental principles about how nervous systems work.
- The male fruit fly connectome is the largest brain map to date by neuron count and includes the central nervous system, allowing researchers to study how the brain controls the body
- Having both male and female fruit fly brain maps enables direct comparison to study sex-based differences in courtship and aggression, plus individual variability
- Google's AI methods (flood-filling networks, PATHFINDER) are improving fast enough that vertebrate brain mapping is now underway—zebrafish and elephant-nose fish connectomes are already in progress