[Late components of somatosympathetic responses in spinal cats]

Reflex responses in renal nerve and in white rami of lower thoracic and lumbar cord segments to stimulation of A- and A+C fibers of somatic nerves revealed that late A-responses persisted both in renal nerve and in white rami of unanesthetized spinal cats. Apart from early and late responses, intermediate discharges occurred in white rami, but the last as well as the latest components of the early response were unrelated to late A-response in renal nerve. The short-latency C-responses also occurred in renal nerve and white rami another spinal C-response had central time about 240 msec.