ISSN: 2578-4838
Authors: Ivet Koleva , Borislav Yoshino and Radoslav Yoshinov
According the International Association for the Study of Pain (IASP) pain is one of the most frequent sensations, formed in the nervous system, with different functional characteristics [1]. By definition, pain is an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage. Pain is a subjective experience, provoked by nociceptive activation, by changes in sensory nerves and roads, or by cerebral centers – regulating of the stress, the affects and the motivation. Different factors (physical, chemical, psychological) can influence on the pain perception.
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