Fluid turbulence is a double-edged sword for the navigation of macroscopic animals, such
as birds, insects, and rodents. On the one hand, turbulence enables pheromone …

Localizing the sources of stimuli is essential. Most organisms cannot eat, mate, or escape
without knowing where the relevant stimuli originate. For many, if not most, animals, olfaction …

Odours are transported in turbulent plumes, which result in rapid concentration fluctuations,
that contain rich information about the olfactory scenery, such as the composition and …

Whether mammalian scent-tracking is aided by inter-nostril comparisons is unknown. We
assessed this in humans and found that (i) humans can scent-track,(ii) they improve with …

Planar laser-induced fluorescence (PLIF) is a non-intrusive technique for measuring scalar
concentrations in fluid flows. A fluorescent dye is used as a scalar proxy, and local …

To navigate towards a food source, animals frequently combine odor cues about source
identity with wind direction cues about source location. Where and how these two cues are …

Odor attraction in walking Drosophila melanogaster is commonly used to relate neural
function to behavior, but the algorithms underlying attraction are unclear. Here, we develop …

How insects navigate complex odor plumes, where the location and timing of odor packets
are uncertain, remains unclear. Here we imaged complex odor plumes simultaneously with …

In this paper, we first draw a connection between a level set algorithm and k-Means plus
nonlinear diffusion preprocessing. Then, we exploit this link to develop a new hybrid …

Highlights•Wind, location, size, and number of odor sources shape temporal odor
patterns.•Insects can detect fine-scale temporal odor patterns and integrate them over …