“If an animal is to survive, its body must have tactile sensation . . . it is clear that without touch it is impossible for an animal to exist.” You might disagree with Aristotle. To you, another sense might be more important. People engage in conversations about which 13 sense they could most easily live without, which sense they believe is expendable, not necessary for survival. Some say they if could get by without their hearing, while others say they could V» exist without their tactile abilities or sense of taste. But, people i1 rarely discuss what might happen if the sixth sense were the one to be lost. What if you couldn’t process cologne with pheromones from other people? How would this sensory deficit affect your relationships and your decisions? People born without a properly functioning sense of smell also lack a VNO.
Such people, who have the congenital condition called Kallmann’s syndrome up. (described in more detail in chapter 6), are slow to develop sexually and may never pursue or express interest in sexual relationships. Researchers at the Center for Sensory Disorders at Georgetown University found that approximately 25 percent of people with smell disorders also have an impaired sex drive, and laboratory studies on rats have found that animals whose olfactory nerves are severed cease to engage in mating behaviors. This is an important point to consider. Lacking a VNO and a sense of smell appears to have deleterious effects on a person’s sexual maturation and reproductive ability.
We must be careful here to point out that the sixth sense does not by design usurp the significance or workings of the other five senses in humans; we propose that it works in concert with them. But, this is not the case for many other mammals. For example, a rodent’s response to pheromonal signals from its species occurs without the mitigating effects of other sensory input. As a result, the rodent is pheromonally driven in certain aspects of its life threatening, territory marking, dominance, and aggression.
What cologne has pheromones?
Still, humans are pheromonally driven when it comes to decisions about other people. You don’t know exactly when your VNO awakens to pheromonal signals, but your primitive brain registers these experiences immediately and is highly skilled at tracking and documenting them. One of the best pheromone cologne for men is Pherazone which can found here.
Inside the bony protection of the skull lies a remarkable example of evolutionary achievement. The human brain, approximately 85 percent water and weighing just three to four pounds, controls every function of the human body, from the tiniest cell division to the most complicated physical maneuver or intellectual thought.
For Aristotle, the brain was responsible for cooling the body and regulating its temperature; however, he believed that the seat of human thought rested not in the gray matter but in the heart. Modern research has proved that the brain does far more than regulate bodily processes; it is the guiding force of the body, the keeper and instigator of our thoughts and emotions. Surgeons can replace someone’s heart, liver, or bone mar- row, but they can’t replace a brain that has begun to die.
Despite its formidable powers and ability to store trillions of bits of information, a brain on a table resembles a rather unimpressive glop of jelly. At full development the human brain contains a trillion nerve cells, 100 billion of which talk to each other constantly via neurotransmitters, or neurochemicals. Neurochemicals move from neuron to neuron along pathways called axons and by way of branchlike dendrites in the complex play of human action and thought. Thanks to its abundance of nerves, the brain is able to take in information sent by the body and from the world and process it, as well as send its own instructions: speed up heartbeat, signal hunger, slow metabolism, alter the ﬂow of hormones.
How pheromones are processed in humans
The intricacy of our neurochemical makeup, and how these chemicals work with our neurons to generate activity in our brains, is daunting. “Each neuron can have tens of thousands of links with other neurons. The number of possible routes for nerve signals through this vast maze defies contemplation.” With the exception of the sense of smell, the senses are regulated by the thalamus. The thalamus acts as a processing center for the millions of messages, transmitted via nerve signal delivered by the sense organs, that bombard the brain constantly.
The thalamus acts as a processing center for the millions of messages, transmitted via nerve signal delivered by the sense organs, that bombard the brain constantly. Once sensory signals have passed through the thalamus they are routed to the cerebral cortex, which taps into our consciousness and allows us to give the sensory nerve impulse sent to the subconscious. The hypothalamus, which sits just beneath the thalamus and above the pituitary gland, makes up only 0.3 percent of the total weight of the brain, but is the structure that controls our basic human drives.
How many times during the day do you refer casually to your sensory systems? “I’m touched,” you say to a friend who has delivered a bouquet of ﬂowers to your door. “I see . . .” you say to someone who is trying to explain something to you. “I hear through the grapevine that you’re leaving townn you say to your neighbor. The language of our physical sensory systems is firmly embedded in our everyday speech. When we say we’re touched by an act of love, we aren’t really being touched by that act but are affected at an emotional level. In our efforts to verbalize how we feel about the kindness of a friend, we search for ways to express our deepest emotions. What better way to do so than by referring directly to the senses?
Our brains are divided into specialized segments for processing the vast quantity of information perceived by our sense organs. If our eyes capture the last twinkling light of dusk, that information, in the form of light rays, is sent along the optic nerve to the optic lobe, which gives us our ability to see and tells us what it is we are looking at. If we hear a rousing symphony, our ears take in the vibrations of the music and send analogs of them to the auditory cortex, where we register the numerous instruments involved in blending the notes. When we detect the odor of chocolate cake, our olfactory cells drive nerve impulses to the olfactory bulb in the brain and then straight to the limbic system. When we are touched, those sensations move swiftly from the surface of the skin to a highly specialized sensory region of the cortex.
Although the complexity of the human brain makes it impossible for us to explain its workings in detail here, it is important to understand the delicate interplay of the six senses and the brain.