EVAN OTO / SCIENCE PHOTO LIBRARY EVAN OTO / SCIENCE PHOTO LIBRARY
An illustration comparing a normal brain and a brain affected by Alzheimer's disease, a progressive neurological disease that is the most common form of dementia. The disease is characterized by regional atrophy of the cerebral cortex and widening of the ventricles, leading to a loss of cognitive function. Damage to areas such as the hippocampus, which is responsible for memory formation, can lead to short term memory loss.
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