And’ came the first study of the sensory mechanisms that allow the brain to interpret a wet stimulus and also evaluate the’moisture to the touch.
The most be interesting if we consider that our skin does not have receptors that detect moisture: the perception of wet then is nothing more than a feeling evoked by our brains based on our experience gained over time.
What would happen then when we perceive a feeling of wetness? It seems that the perception of moisture it tangles with our ability to perceive temperature, pressure and consistency: However, lower the temperature, more it accentuates our feeling of dampness.
To unravel this involvement has been a recent study published in the Journal of Neurophysiology performed by a group of researchers of the University of Loughborough ’ (in the United Kingdom) led by Davide Filingeri.
Thanks to experiments carried out on some young, It was developed the first model can explain these mechanisms and explain how the brain can interpret, and evaluate with good accuracy, the feeling of damp despite not having available the suitable earners.
The study involved 13 male students, that were exposed to wet stimulus 3 different bands Ambient temperature: hot, cold and neutral.
The ’ experiment was conducted by stimulating a point of ’ forearm, where the skin has hairs, or on the skin of the fingers, that though similarly sensitive, is absolutely glabra.
Also in other experiments was also evaluated the involvement of the nerve fibers that carry signals relating to temperature and touch from the skin to the brain: by blocking this nerve activity first sensations encountered were not more perceived.
In this way it has been discovered that the perception of ’ humidity is obviously more at low temperatures and in areas where there is more hair and presence, the afferent nerve fibers sensitive to cold and tactile sensations, I'm actually more involved in the transmission of moisture sensation to the brain.
In light of this, the authors of the study State: "Our results provide evidence of a specific model of information processing at the base of a neural representation of a typical wet stimulus".
In conclusion we can say that the feeling of wetness comes, Apart from the general feeling due to the climate where you are staying, also from cold receptors of touch.
We haven't personally experienced these conclusions, but it seems truthful the opportunity to evaluate the degree of humidity of a surface (in our case a damp wall), with simple forearm with good hair.
Going a little’ a feeling, We believe that the most sensitive area should be the male inside forearm ’ (the least tanned so to speak) and measurement should be always with the forelimb ’ not hot enough and well sprayed. It seems obvious that with cold anchilosati arts, all sensations would be little true and poorly reliable measurement.