Autistic children aged 2 to 4 have about 15 percent more fluid between their skull and their brain than their typical peers do.

Analyzing large numbers of autism mice, researchers have found that the mice cluster into subtypes based on brain structure and functional connectivity.

The brains of children with autism fold differently than those of typical peers, but the exact differences depend on location and age.

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

Missing one copy of a stretch of chromosome 16 leads to an enlarged brain; an extra copy of the region has the opposite effect.

New evidence links autism and cerebral palsy at the genetic level, facial expressions tend to mislead, and many health conditions accompany autism.

Part of the brain’s outer layer thins too quickly with age in boys with autism, but not in girls with the condition.

The amygdala, a brain region that governs emotions, may be enlarged and overly connected in children with autism, but it shrinks as the children grow up.

A software package identifies bundles of nerve fibers in brain-imaging data, revealing connections unique to people with autism.

A new software program can correct for the confound introduced by head movements and breathing.