A vector-based strategy for olfactory navigation in Drosophila

TL;DR - Virtual-reality experiments show that fruit flies use memory to navigate along odor-plume boundaries and locate a smell’s source. The findings clarify neural strategies for navigation under intermittent sensory signals.

• Drosophila track the boundary of an odor plume rather than relying only on direct gradients.
• Memory mechanisms help sustain navigation toward the odor source.
• A virtual-reality system enables controlled study of this vector-based behavior.