In typical conversation, people speak at a rate of 250 milliseconds per syllable. So imagine how confusing it would be if you lagged behind — even if only by a fraction of a second.That tiny delay may be what's provoking the language problems in some children with autism.Tim Roberts, a radiologist at the Children's Hospital of Philadelphia, has been studying the phenomenon for the last decade. He uses magnetoencephalography, or MEG, the 'hair dryer' brain imaging method that uses magnetic fields to detect changes in brain activity on the order of 10 milliseconds or less.Last week, his team reported that when listening to tones of different frequencies, children with autism give brain responses in their right hemispheres about 11 milliseconds slower than healthy controls do. In other, unpublished work, Roberts found a much longer delay — about 50 milliseconds — when children with the disorder process speech sounds, such as 'ah' or 'ou'.Read more at...SFARI, January 2010.