Abstract
Understanding the extent to which measured synaptic wiring determines computation remains a central challenge. Here, we couple the proofread adult Drosophila melanogaster connectome to an anatomically faithful model of its eye. Visual information is inputted in the eye model, then passed to the connectome, and finally read from a Kenyon-cell-centered linear decoder. This creates a connectome-only model in which the anatomical graph and eye geometry are fixed and only scalar synaptic gains and neuronal thresholds may be learned. The model supports multitask vision, including color discrimination, shape classification, and numerical discrimination that follows a ratio-dependent scaling characteristic of approximate number perception. To test whether precise connectivity is consequential under wiring economy, we compare the biological graph to randomized ensembles that increasingly preserve biological synaptic constraints. At matched wiring cost, the biological network consistently yields higher accuracy, whereas less constrained rewiring surpasses it at the cost of inflated wiring. These findings indicate that the measured connectivity and eye geometry jointly set efficient operating points for visual computation.
Keywords
Publication details
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- Open access
- Green open access
Cite this article
APA 7
Correig-Fraga, E., Guimerà, R., & Sales-Pardo, M. (2026). Structure alone supports efficient visual computation in the Drosophila visual system. https://omanscience.com/en/articles/structure-alone-supports-efficient-visual-computation-in-the-drosophila-visual-system
MLA 9
Correig-Fraga, Eudald, et al. "Structure alone supports efficient visual computation in the Drosophila visual system." https://omanscience.com/en/articles/structure-alone-supports-efficient-visual-computation-in-the-drosophila-visual-system.
Chicago (author–date)
Correig-Fraga, Eudald, Roger Guimerà, and Marta Sales-Pardo. 2026. "Structure alone supports efficient visual computation in the Drosophila visual system." https://omanscience.com/en/articles/structure-alone-supports-efficient-visual-computation-in-the-drosophila-visual-system.
Harvard
Correig-Fraga, E., Guimerà, R. and Sales-Pardo, M. (2026) 'Structure alone supports efficient visual computation in the Drosophila visual system', Available at: https://omanscience.com/en/articles/structure-alone-supports-efficient-visual-computation-in-the-drosophila-visual-system.
Vancouver
Correig-Fraga E, Guimerà R, Sales-Pardo M. Structure alone supports efficient visual computation in the Drosophila visual system. https://omanscience.com/en/articles/structure-alone-supports-efficient-visual-computation-in-the-drosophila-visual-system
IEEE
E. Correig-Fraga, R. Guimerà, and M. Sales-Pardo, "Structure alone supports efficient visual computation in the Drosophila visual system," https://omanscience.com/en/articles/structure-alone-supports-efficient-visual-computation-in-the-drosophila-visual-system.