Autism spectrum disorders (ASDs) are brain-based developmental disorders, but their specific neural bases are not yet understood. Studies investigating both social brain theories and interconnectivity theories of ASD have obtained mixed results, reflecting the heterogeneity observed in the clinical phenotype. This research studies the brain bases for social difficulties in autism by examining the integrity of brain systems supporting face perception and imitation. Researchers will use electrophysiological techniques in autistic patients to measure brain activity during face perception. By understanding patterns of connectivity in these brain circuits, the study may shed light on causes of the disorder, ways to identify the disorder at younger ages, and avenues for treatment.