Spinal cord thermosensitivity and sorting of neural signals in cold exposed rats

摘要: In the present study, data relevant to presence or absence of sorting neural signals were obtained by evaluating thermal responses spinal warming in chronically prepared rat. Specifically, shivering activity and rate oxygen consumption (VO2) measured unanesthetized rats during cold exposure (10-16 degrees C). Warming cord at level T2 resulted a significant decrease (P less than 0.001), without change VO2. The response was reversed upon cessation heating. These results are interpreted as indicating direct influence temperature on but not nonshivering thermogenesis Similarly, previous work with rat, we have supporting hypothalamic receptor control heat production. findings thus consistent suggestion that rat there occurs signals. That is, impulses from three thermoreceptor locations integrated an identical manner for thermogenesis.