Patients with loss of vision due to brain injuries They could be guided by walking and bypassing obstacles, according to a study carried out by researchers at the University of Tilburg (The Netherlands).
So far, a large part of the research on vision loss due to brain injury suggests that, once the brain cells have been destroyed or damaged, in most cases they do not usually regenerate.
However, after a brain injury there may be a cellular recovery, because in certain cases, other areas of the brain compensate for the injured tissue or the brain learns to redirect information and works in the areas adjacent to the damage.
Acquired brain injury (ABI) occurs when sudden, external physical aggression occurs that causes damage to the brain.
The term ABI is very broad, since it refers to a whole series of injuries related to the brain. Acquired brain injuries are also referred to as Traumatic Brain Injury (TBI) or traumatic brain injury.
In this regard, specialists from the University of Tilburg analyzed the behavior of a patient who lost his sight after suffering two accidents and suffering damage to the visual cortex of both hemispheres. However, the patient managed to cross, without the help of the stick, a maze with several chairs and boxes as obstacles without colliding with anything.
These observed findings have been confirmed in studies with animal models, where they demonstrated that monkeys with similar brain lesions developed similar abilities.
There are two types of brain injuries acquired:
- Closed brain injury: occur when there is a non-penetrating wound in the brain, which does not break the skull.
- Penetrating brain injury: occur when the skull is broken, as for example, when a bullet pierces the brain.
The effects of brain injuries may include:
- Sensory or perception deficits: vision problems, including double vision, lack of visual acuity or reduction of the visual field.
- Deficits in communication and language: difficulties in speaking, writing and working with numbers.
- Functional deficits: inability to drive a car or operate machinery.