In order to pick up brain electrical activity as subjects perform the task, we place arrays of electrodes on occipitoparietal scalp.
In order to have some normal data against which to compare the autism results, we recruited some normal college students who didn't mind staring at a video screen while we recorded their brain waves.
`Physiological Studies of Attention in Autism: Implications for Autistic Cognition and Behaviour', Matthew Belmonte, 26 January 2002
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