Science

Olfactory region connected to emotion and memory The olfactory region of the brain, where smells are processed, is connected to many other brain regions, such as those involved in emotion (the amygdala), memory (the hippocampus) and multisensory regions (the orbitofrontal cortex). In effect, through its connections,...

Humans have five to six million odour detecting cells but that is nothing compared to the animal kingdom. Rabbits have 100 million and a dog 220 million. The human brain can process roughly 10,000 smells in an area the size of a postage stamp, each triggering...