For worms, positive thinking is the key to finding food

Caenorhabditis elegans, a tiny roundworm, spends much of its lifetime searching for soil bacteria to eat. This humble creature possesses 302 neurons, which may not seem like a lot compared to the billions of nerve cells that ...

Better learning through neural distinguishing

A study published in the latest issue of Nature Neuroscience describes work led by the University of Geneva's (UNIGE) Faculties of Medicine and Sciences, on the indisputable role of the olfactory bulb in mammal brains' ability ...

How do ants identify different members of their society?

Ants, which are eusocial insects, have intrigued scientists for long as a model for cooperation inside a colony where they nurse the young, gather food and defend against intruders. Most recently, ants have been shown to ...

Making sense of our evolution

The science about our our special senses - vision, smell, hearing and taste - offers fascinating and unique perspectives on our evolution.

A controversial theory of olfaction deemed implausible

Humans can discriminate tens of thousands of odors. While we may take our sense of smell for granted, it adds immeasurably to our quality of life: the aroma of freshly brewed coffee; the invigorating smell of an ocean breeze ...

One simple molecule regulates sexual behavior in Drosophila

The common vinegar fly Drosophila melanogaster is a very well-studied animal. For decades, the fly has been used as a model organism in genetic research; its genome was fully sequenced in 2000. However, until now researchers ...

Plausibility of the vibrational theory of smell

The vibrational theory of olfaction explains several aspects of odorant detection that theories based purely on receptor binding do not. It provides for additional selectivity through receptors that are tuned to specific ...

Leaf odor attracts Drosophila suzukii

In 2014, more spotted-wing Drosophila suzukii than ever before were observed in Germany. This pest lays its eggs in fresh and ripening fruits before they are harvested. Infested fruits are often additionally infected with ...

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