Hippocampus

"We found that physical activity has the potential to preserve the volume of the hippocampus in those with increased risk for Alzheimer's disease, which means we can possibly delay cognitive decline and the onset of dementia symptoms in these individuals," he said.

The hippocampus is a part of the brain associated with the storage and retrieval of memories.

Holonyms: limbic system < brain < central nervous system, CNS

The hippocampus is central to the laying down of memories.