Macaque species with higher social tolerance possess larger amygdalae, redefining the brain region as a social hub.

PET and MRI scans may together distinguish a new type of dementia from Alzheimer’s disease (AD), a 2026 retrospective, observational study has found.

Researchers have found that the size of the amygdala—a region of the brain involved in processing emotions—could be linked to ...

A new study shows macaque species with more tolerant social systems have larger brain regions linked to emotions and social signals.

A new study found that people who are politically conservative have a slightly larger amygdala than progressives. The results suggest that the relationship between brain anatomy and political ideology ...