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Patients blind from brain injury 'could store visual pathways'RSS Feed
People whose sight has been affected by brain injury might still be able to see to a certain extent, scientists have suggested.
A team at the University of Western Ontario asked a patient who had become completely blind on his left side to reach out and avoid obstacles that were is his visual field on the right, which he was able to do successfully.
However, when asked to do the same when objects were placed on the side where he could not see them, the patient still managed to avoid them – even though he could not physically view them.
It is thought the mind can store visual pathways from memory, meaning when the part of the brain that gives people sight is damaged, other areas can use limited amounts of information to control limb movement.
Lead author of the study Chris Streimer commented: "The patient seemed to be as surprised as we were that he could respond to these unseen obstacles.
"The patient's behaviour shows he is sensitive to the location of obstacles he is completely unaware of."
Meanwhile, neuropsychiatrist Dr David Durham recently discussed the importance of treating traumatic brain injury as early as possible.
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