Neuroendocrinol Lett
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Neuroendocrinol Lett · Dec 2008
Comparative StudyPreemptive levetiracetam decreases postoperative pain in rats.
Preemptive versus therapeutic effects of levetiracetam were investigated in a model of postoperative incisional pain in rats. ⋯ The present results suggest that levetiracetam might possess preemptive analgesic activity.
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The fetus reacts to nociceptive stimulations through different motor, autonomic, vegetative, hormonal, and metabolic changes relatively early in the gestation period. With respect to the fact that the modulatory system does not yet exist, the first reactions are purely reflexive and without connection to the type of stimulus. ⋯ Harmful (painful) stimuli, especially in fetuses have an adverse effect on the development of humans regardless of the processes in brain. Moreover, pain activates a number of subcortical mechanisms and a wide spectrum of stress responses influence the maturation of thalamocortical pathways and other cortical activation which are very important in pain processing.
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An explanation of consciousness is one of the major unsolved problems of modern science. The modern view of consciousness arose in the nineteenth century; the view presumed that mental activity correlates with distinct physical states. Is the problem of consciousness real? Crick and Koch made a tentative assumption that all different aspects of consciousness (pain, seeing, thinking, emotion, self-consciousness) are connected by a basic common mechanism. ⋯ The introduction of safe general anaesthesia represents one of the most important, although under-appreciated, advances in modern surgery. There is some difficulty in defining the term "consciousness" in relation to the anaesthetic state. The difference in brain activity between those under anaesthesia and those not under any such influence.