d'alz writes "A new research states that Alzheimer's disease and other types of dementia can now be defined by a visual test based on images of faces and scenes. Research indicates that when people were asked to pick 'the odd on out' from a set of pictures of scenes and faces, those suffering from Alzheimer had difficulty picking out the odd scene. On the other hand those with semantic dementia had a problem with the faces.
From the article: The findings, reported in the Journal of Neuroscience, support earlier research which suggested that different areas in a region of the brain called the Medial Temporal Lobe could be responsible for various aspects of memory and perception."
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