Progressive Advancement is an antonym for Retrograde Degeneration. Retrograde Degeneration refers to the degeneration of nerve cells in the brain and spinal cord that have been previously healthy. To counter this, Progressive Advancement is a term that indicates the development, growth, and improvement of nerve cells. Unlike Retrograde Degeneration, Progressive Advancement is a positive process that leads to new neural connections, better signals transmission, and enhanced cognitive and motor functions. While Retrograde Degeneration signifies a decline in neuroplasticity and flexibility, Progressive Advancement implies neuronal regeneration, neurogenesis, and neural plasticity. Therefore, Progressive Advancement is a hopeful and desirable state for the brain and spinal cord, unlike Retrograde Degeneration, which represents a step backward.