In collaboration with the New York State Institute of Basic Research, the T-SMIL group is tracking neonates auditory brainstem responses using routine auditory testing and new biometrics developed at the T-SMIL. Retrospective ABR data from neonates that 3-4 years later received the autism diagnosis revealed fundamental differences between these babies and those who developed typically. Long latency delays in sound processing and propagation throughout the brainstem structures are paired with very narrow bandwidth of signals in these babies. Given how common this test is, this could be the earliest and most broadly available marker of neurodevelopmental derailment in the US, signaling as well prodrome autism.