Plugging steel needle into his own flesh will never be fun and exciting ways - but at least you can make it much less painful. The trick here is to trick the cell pain with a small device which uses pressure and vibration. Here's how it works.
Last week at the American Society of Anesthesiologists demonstrated a new device that allows you to deceive our own nerve cells. 21 volunteers participated in the experiment in which they are pricked in the shoulder plastic ersatz needle while this same area was applied a different quantity of heat, cold, pressure, and vibration. The researchers found that the greatest effect is achieved by the application of a specific volume of pressure and vibration for 20 seconds before injection. The temperature of this process, presumably, does not play any role.
But how this action is deceiving our brains? Gate theory of pain states that pain signals from the skin puncture must pass through a "neural gate" in the spinal cord on the way to the head brain. These gates can block other physical sensations such as pressure and vibration. This same principle explains why, when pressure is applied to the cut, the pain of it decreases.
Dentists can already use some varieties of vibrating needles, but a new study shows that the application of vibration and pressure to the injection site more efficiently.
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