Researchers map complete connectome of fruit fly brain, paving way for human studies

Researchers at Princeton University have created a complete connectome of a female fruit fly's brain, mapping 139,255 neurons and 54.5 million synaptic connections. This achievement surpasses previous efforts by the FlyEM project at Janelia Research Campus, which focused on smaller brain sections. The FlyWire team utilized advanced AI software to analyze data previously collected by Janelia but deemed too complex to process. Their work has doubled the known types of neurons in the fly's optic lobes and clarified how these neurons connect in visual processing circuits. This development aims to enhance connectome construction technology, potentially paving the way for mapping larger brains, including those of humans. While fruit flies and humans have distinct evolutionary paths, ongoing research may reveal valuable insights into brain function across species.