Final answer:
Traumatic brain injury (TBI) is the term used to describe immediate and prolonged coma due to widespread damage to axons and other neuronal processes in the brain. This type of injury can result in long-term neurological problems and symptoms such as memory loss, personality changes, blurred vision, uncoordinated movements, and insomnia.
Step-by-step explanation:
Immediate and prolonged coma due to widespread damage to axons and other neuronal processes in the brain is known as traumatic brain injury (TBI). TBI occurs when a head injury results in damage to neuronal structure and integrity, causing necrosis of neurons. This type of injury can lead to long-term neurological problems and symptoms such as memory loss, personality changes, blurred vision, uncoordinated movements, and insomnia.