Scientists map the complete male fruit fly central nervous system

Researchers from HHMI Janelia, Google Research, Cambridge and other institutions have published the first complete connectome of an adult male fruit fly’s brain and central nervous system. The map contains 166,700 neurons, more than 125 million synaptic connections and 11,710 cell types, extending through the intact neck into the ventral nerve cord. Built from electron-microscope images using AI reconstruction and extensive human proofreading, the open dataset lets scientists compare male and female circuitry and trace paths from sensory inputs to movement.