A method, and compositions, for treating an animal with an injured spinal cord, causing loss to sensory function and motor control, to regain such function and control. The method comprises the administration of at least 1 .alpha..sub.2 -adrenergic receptor agonist or a serotonergic receptor agonist or a dopaminergic receptor agonist, and preferably a combination with an anti-desensitization agent, such as a xanthine, a .beta.-adrenergic receptor agonist or a vascular skeletal muscle dilator. The composition comprises at least 1 receptor agonist and a second compound acting in conjunction therewith or preventing desensitization thereof.