Effect of T2 spinal transection on compensation of horizontal canal related activity in the medial vestibular nucleus following unilateral labyrinth ablation in the decerebrate gerbil.

The effects of spinal transection at T2 upon static and dynamic responses of type I and II neurons in the medial vestibular nucleus after vestibular compensation were investigated in decerebrate Mongolian gerbils (Meriones unguiculatus). Spinal transection in compensated animals resulted in bilaterally depressed spontaneous activity and asymmetry in the response gain of type I neurons, suggesting that tonic spinal inputs contribute to vestibular compensation through effects upon type I neurons.