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This is a surprising finding because neurogenesis levels in rodents and other lab animals contribute to a different type of learning and memory using visuospatial skills.

A team of international researchers, led by UC San Francisco, has completed the first large-scale study of posterior cortical atrophy, a baffling constellation of visuospatial symptoms that present as the first symptoms of Alzheimer's disease.

"Patients with PCA have more tau pathology in the posterior parts of the brain, involved in the processing of visuospatial information, compared to those with other presentations of Alzheimer's. This might make them better suited to anti-tau therapies," he said.

In contrast, surgeons—who on average spend 3,963 hours of training honing a complex motor and visuospatial skill may naturally focus more on the procedural task at hand rather than the factors contributing to their patient’s condition.

They measured their mental agility an average of 15 years later using well-validated tests of verbal fluency, processing speed, memory and visuospatial skills.