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Science News for December 27, 2025


Chew on this: Losing teeth weakens key memory hub in mouse brains

Aging mice without teeth experience cognitive decline due to inflammation and cell loss in the hippocampus, essential for memory formation. The study suggests that maintaining chewing ability may be a strategy to preserve cognitive function later in life.

SourceHiroshima University·JournalArchives of Oral Biology·DateDec 27, 2025

Numbers in our sights affect how we perceive space

A team from Tokyo Metropolitan University found that numerical information in vision affects spatial perception, introducing complex interplay between object-based processing and number value. Their experiments with squares showed a strong vertical bias when numbers were present, highlighting the impact of the ventral visual stream.

SourceTokyo Metropolitan University·JournalScientific Reports·DateDec 27, 2025