Locomotion in the Spinal Cat

摘要: The locomotion of the hindlimbs in low spinal cat (Th 12) is described as well some common features neuronal circuitry and decerebrate preparations which can be elicited. Three different are considered: chronic cats cord was transected 7–14 days after birth, acute noradrenergic precursor DOPA or receptor stimulator Clonidine injected i.v. These utilize their to walk on a treadmill with speed dependent belt speed. duration stance phase shortens increases while swing much less influenced under intact conditions. EMG activity prime movers hip, knee ankle similar that extensor starts before foot touches ground; muscle force adequate for support. At lower speeds two hind-limbs alternate trot but at higher almost synchronous cat’s gallop.