Scientists have discovered how men and women remember the pain: who’s tougher

Ученые выяснили, как мужчины и женщины запоминают боль: кто выносливее

Survey of employees of McGill University and the University of Toronto showed how men and women remember the pain

In the course of the study, which was published in the journal Current Biology, found that men and male mice remember early painful experiences, resulting in experiencing stress and increased sensitivity, returning to the place where I was feeling pain. Women and female mice, by contrast, had not experienced stress due to their earlier experiences of pain.

Ученые выяснили, как мужчины и женщины запоминают боль: кто выносливее

“We were amazed when we saw that between men and women observed the same distinctions, that between mice. What was even more amazing is the fact that men react stronger, in spite of the known fact that women are more sensitive to pain, and, as a rule, are more prone to stress,” – say the researchers.

The experiments were attended by 41 men and 38 women aged 18 to 40 years and a few experimental mice. They walked to a particular room (or placed in a container for testing), where they were exposed to low levels of pain caused by heat, which is transferred to the hind leg or forearm. People evaluated the level of pain on a 100-point scale, and the “evaluation” of mice, scientists tracked how quickly they were trying to get away from the heat source.

People were asked to wear tight pressurized device for measuring blood pressure and to train the hand for twenty minutes – 73 out of 80 subjects rated the level of discomfort more than 50 points on a 100-point scale. Each mouse in turn received an injection that caused pain in their stomach for about thirty minutes.

To determine the role of memory in the experience of pain, the next day, the part of the subjects returned to the same location, where he again was exposed to thermal impact. In those cases when they were placed in the same room, men estimated the thermal pain higher than a day earlier, and even higher than women. In male mice, in contrast to females returning to the same environment, which was manifested by increased reaction to heat pain, whereas mice placed in a new and neutral environment, this was not observed.

Ученые выяснили, как мужчины и женщины запоминают боль: кто выносливее

According to scientists, the results of this study support the idea that the memory of a past pain can affect subsequent pain pain. Further study of this extremely intense events will give researchers important information that may be useful for future treatment of chronic pain.

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