The researchers selected 61 healthy subjects aged between 21 and 42. First, they measured each subjects alpha wave with electroencephalogram, and then conducted the experiment in two steps: first, the cream containing capsaicin was smeared on the skin of the subjects to make them sensitive, and then the sensitive skin formed by applying capsaicin cream was heated repeatedly. After 8 weeks, the experiment was repeated.
Dr. David sminowitz, of the University of Maryland School of Dentistry, said it was important to understand the patients pain sensitivity when deciding whether to perform elective surgery or develop a post-operative rehabilitation plan. Painkillers or mindfulness meditation can also be used before surgery to minimize the patients pain.