Olfactory Bulb

Developing our sense of smell

When our noses pick up a scent, whether the aroma of a sweet rose or the sweat of a stranger at the gym, two types of sensory neurons are at work in sensing…

Electric Signals Amplify Weak Olfactory Stimuli in the Nose

The human olfactory system possesses a special electric amplification mechanism that enables olfactory cells to respond even to extremely weak stimuli. Scientists at Heidelberg University headed by physiologist Prof. Dr. Stephan Frings have now established how this mechanism works. Crucial is the role played by chloride ions stored in the sensory cilia of the nose. As soon as the olfactory receptors in the sensory cilia detect odorants, the chloride ions are immediately discharged. This process generates strong electric signals that pass on the relevant olfactory information to the brain. …

Men’s Testosterone Responses to Olfactory Ovulation Cues

Smells are known to be critical to animal mating habits: Animal studies have shown that male testosterone levels are influenced by odor signals emitted by…

New discovery about the formation of new brain cells

Although the research has been carried out using mice and cultured cells, it could lead to a new medicine for human beings, which could be given to patients…

Sense of attraction

Many olfactory cues pervade the aquatic environment of fish. These cues stimulate various important behaviors, such as escape from predators, or attraction…

Long-Term Potentiation in the Olfactory Bulb

Ben W. Strowbridge, Ph.D, associate professor of Neuroscience and Physiology/Biophysics, and Yuan Gao, a Ph.D. student in the neurosciences program at Case…