In normal development of the nervous system when cells are born and become differentiated, they do so through patterned neural activity. If you disrupt patterned neural activity during this period, you disrupt those processes. Those are the processes you want to occur after injury, a process called regeneration.
In short words, the nervous system has a pattern that starts a process. If you mess up this pattern, it will not allow the process to happen. This process is called regeneration.
