The human olfactory system discriminates between thousands ... detecting concentrations down to the femtomolar level—parts per thousand trillion—they have one limitation: they cannot ...

Their findings point to never-before-seen fast-updating signals in a feedback loop between the brain's olfactory cortex and olfactory bulb. These signals may help put odors and sounds into new ...

And the olfactory system has the striking ability to elicit powerful emotions, feelings, and memories, thereby impacting quality of life. These qualities, and our resulting, inherent attraction to ...