Human sense of smell – one of the special and mysterious components of the body's sensory system. This odor analyzer is already known to science, but still continues to keep many secrets. What new scientists managed to sniff out? What dead end did they manage to discover in science? Let's try answer these questions.
Human has the dullest sense of smell of all warm-blooded animals. Over the years, this part of the sensory system begins to be lost. So, being born, a person has a particularly sharp sense of smell, which is dulled by 40-50% after the first year of life. It is also noteworthy that the female sense of smell is much sharper than the male. With a more sensitive nervous system, women can more clearly recognize subtle odors, male pheromones and testosterone.
How does the olfactory analyzer work?
The smelling resource in humans is the olfactory epithelium. It is located inside the nasal cavity, on the superior nasal concha. Impulses from the olfactory cells pass through the nerves into special bulbs. Thus, the signal first reaches the subcortical centers, and then it is converted to the cortical centers of smell of the brain, where the final phase of processing the received data takes place. All this mechanism is combined into an olfactory analyzer.
The cells of the olfactory epithelium sense the smell that has dissolved in the air and passed into secretion.
Olfactometrologists have recently found out that the peculiarities of the human sense of smell are still entwined with a whole thickness of mysterious secrets and mysterious mysteries… One of the most urgent and unsniffed dead ends was fat. Although its molecules do not dissolve in the air, people are able to recognize the fat content of the product by smell. This hypothesis has been confirmed by a number of studies. Volunteers had to sniff several glasses of milk so that scientists were convinced of the mysterious abilities of the human brain. The ability of the olfactory analyzer to sniff out fats is obvious and will soon become a new scientific discovery, which is now being worked on by competent experts.
Interesting facts about the human sense of smell
In the course of harmless medical experiments, scientists have been able to discover and authenticate many interesting facts about the features of the nasal analyzer.
The feeling of an increased need to satisfy hunger excites animal or, more precisely, physical instincts in a person. In order to preserve itself, the brain is looking for an opportunity to satisfy the needs of the body. On this solid foundation, all sensory systems sharpen.
This fact is strongly correlated with the fact that obese people have a more acute sense of smell. Although the reason is connected not only with the fact that being overweight can not find a feeling of satiety in any way. Excessively fat people get a special pleasure from food, the mere sight of which can cause hunger. The reason is that when looking at an appetizing picture the brain resurrects in its memory smells that cause appetite.
An equally interesting fact is that smell affects human behavior. Pleasant odors are able to relax the nervous system, dispose him to sleep or some other positive action, while unpleasant odors are completely associated with dislikes. This information is often taken into account when designing Western trading floors. To evoke a sense of cosiness in an overly spacious store, the space is filled with the scent of tea or vanilla. Cramped spaces are deliberately filled with the smell of pine needles, fresh grass or nitrogen. This causes subconscious associations with spacious space.
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