[Disorder and recovery of somatic sensitivity in cats with destruction of the afferent pathways of the spinal cord].
Somatic sensitivity was studied in intact cats and in the process of functions recovery after section of the posterior columns of the spinal cord and spino-cervical tracts. The state of somatic sensitivity was estimated by the change in the thresholds of food-procuring conditioned reflexes to electrocutaneous stimulation of the anterior limb. After section of the posterior columns or the spino-cervical tracts at the level of the 2nd cervical segment, the threshold rose. It gradually decreased in parallel to the recovery of motor activity, without reaching the initial level. The section of both tracts (simultaneous or in two stages) resulted in an intensive rise of the threshold which decreased in the course of recovery of disturbed functions. Evidently only partial recovery of somatic sensitivity takes place in the process of compensation of functions following the lesion of specific afferent ways of the spinal cord, and motor activity may be achieved with a consdierable deficit of somatic sensitivity.
D000818:Animals; D002415:Cats; D003214:Conditioning, Classical; D004558:Electric Stimulation; D005502:Food; D009043:Motor Activity; D009475:Neurons, Afferent; D013119:Spinal Cord Injuries / Q000503:physiopathology*
Narushenie i vosstanovlenie somaticheskoĭ chuvstvitel'nosti u koshek s povrezhdeniem afferentnykh puteĭ spinnogo mozga