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The trial posting for Diagnostic utility of ADHD by Brain Activity Flow Patterns Analysis using Evoked Response Potentials is not listed as active in clinicaltrials.partners.org database. The trial may have stopped recruiting.
About attention-deficit/hyperactivity disorder (ADHD):
ADHD, also called attention-deficit disorder, is a behavior disorder, usually first diagnosed in childhood, that is characterized by inattention, impulsivity, and, in some cases, hyperactivity. These symptoms usually occur together; however, one may occur without the other(s).

The symptoms of hyperactivity, when present, are almost always apparent by the age of 7 and may be apparent in very young preschoolers. Inattention or attention-deficit may not be evident until a child faces the expectations of elementary school.

Three major types of ADHD include the following:
  • ADHD, combined type
    This, the most common type of ADHD, is characterized by impulsive and hyperactive behaviors as well as inattention and distractibility.
  • ADHD, impulsive/hyperactive type
    This, the least common type of ADHD, is characterized by impulsive and hyperactive behaviors without inattention and distractibility.
  • ADHD, inattentive and distractible type
    This type of AHD is characterized predominately by inattention and distractibility without hyperactivity.