Scientists identify overgrowth of key brain structure in babies who later develop autism

The amygdala is a small structure deep in the brain important for interpreting the social and emotional meaning of sensory input—from recognizing emotion in faces to interpreting fearful images that inform us about potential dangers in our surroundings. Historically the amygdala has been thought to play a prominent role in the difficulties with social behavior that are central to autism.

source https://medicalxpress.com/news/2022-03-amygdala-overgrowth-autism-spectrum-disorder.html