Connections between the cerebellum and brain networks do not seem to contribute substantially to the emergence of autism traits.

Autistic men show a greater imbalance between excitatory and inhibitory signaling in the brain than autistic women do, which could explain sex differences in ‘camouflaging.’

Autistic girls’ brains respond more strongly to social stimuli than do autistic boys’.

The hemispheres in autistic people’s brains are more symmetrical than those of their typical peers, but it is unclear what this difference means.

A growing body of evidence suggests that autism involves atypical communication between brain regions, but how and where in the brain this plays out is unclear.

The brains of autistic children show few differences from those of children with attention deficit hyperactivity disorder, or even of controls.

Children who have repetitive behaviors, a core autism trait, may show particular patterns of brain activity as early as 1 year of age.

Administering a cholesterol drug alongside an antibiotic eases atypical behavior and restores the signaling balance in the brains of people with fragile X syndrome.

Mice and people missing a copy of a chromosomal region called 16p11.2 show similar patterns of weak brain connections.