Why it seems wet wet?

Until now, scientists had no idea how we feel the humidity, but a recent experiment that may help with this razobratsya



At first glance, it may seem quite silly question. That is, things seem wet wet because ... they are wet! But if you think about it carefully, it turns out that is not so obvious.



Our skin may feel warm or touching, but it has no receptors, allows you to feel the humidity. That is why scientists have suggested that we rely on other senses such as touch, or a feeling of warmth, to "indirectly" to feel something wet.

To test this idea, the scientists tested wet forearms parallel interfering with their sense of temperature and touch. The test that everything else did not have a chance to see their own hands, should assess whether their hands are wet. In the end it turned out that the interference with the sense of touch and sense the temperature can actually reduce the ability of the subjects to feel the humidity, that is, the hypothesis was confirmed.

That's what scientists say:

«While the ability to sense the moisture of the skin is important for the behavioral and autonomic adaptations, humans are no specific skin receptors to determine the moisture content. Since a hypothesis was that we "learn" feel humidity based on the earlier situations where our skin is in contact with a moist surface. However, the individual role of thermal and tactile signals, and how they interact in the central nervous system when in contact with moisture, are not yet fully understood.

During the quantitative sensory testing, we found that people perceive the warm-wet and wet-neutral subjects as less wet compared to cold-wet, but the moisture content was the same everywhere. Furthermore, when the skin temperature and tactile sensitivity was significantly reduced by suppressing the activity of the corresponding nerve-afferents, the perception of the subjects significantly decreased humidity. The experimental results provide evidence of the existence of a specific model of information processing, which reinforces the nervous representation of a typical wet incentives. Data collected during the experiment will help to better understand how people feel warm, neutral and cool moisture of the skin ».

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via factroom.ru