Washington: Supporting the popular adagethat those who are visually challenged are compensated withother extraordinary senses, American scientists have claimedthat a visually impaired persons` brain reorganises itselffunctionally in order to adapt to a loss in sensory input.
This, the researchers say, suggests that the brains ofblind individuals are compensating for the reduced volume inareas normally devoted to vision. "This study shows the exceptional plasticity of thebrain and its ability to reorganize itself after a major input-- in this case, vision -- is lost," said lead author NatashaLeporé. She added, "In other words, it appears the brain willattempt to compensate for the fact that a person can no longersee, and this is particularly true for those who are blindsince early infancy, a developmental period in which the brainis much more plastic and modifiable than it is in adulthood."
Researchers used an extremely sensitive type of brainimaging called tensor-based morphometry, which can detect verysubtle changes in brain volume, to examine the brains of threedifferent groups.Bureau Report
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