ADD ADHD Neuropsychological deficits in adolescent-onset schizophrenia compared with attention deficit hyperactivity disorder.

Am J Psychiatry 1999 Aug;156(8):1216-22
Oie M, Rund BR
National Centre for Child and Adolescent Psychiatry, University of Oslo, Norway.

OBJECTIVE: Impaired neuropsychological performance involving abstraction-flexibility, memory, motor function, and attention has frequently been reported in schizophrenia as well as in attention deficit hyperactivity disorder (ADHD).

This study represents an attempt to compare groups of adolescents with schizophrenia and ADHD on a comprehensive neuropsychological test battery. Such a comparison affords the opportunity to ascertain differences in the degree, profile, and specificity of impairments.

The ADHD research studies noted here all look at the functional neurology of ADHD, or how the brain of a person with ADHD functions differently than the brain of a person without ADHD.

Attention Deficit Disorder and the Reticular Activating System

• What causes these various systems of the brain to get out of balance with Attention Deficit Hyperactivity Disorder individuals?
• Why would these systems become under aroused or over aroused?
• Is there one central system that controls or regulates these other systems?

The answer may be found with the Reticular Activating System. Read more of the article...

ADHD Brain: The Neurology of Inattention, Impulsivity, and Hyperactivity

What is Happening in the Brain of a Person with ADHD ?

The most recent models describing what is happening neurologically in the brains of people with Attention Deficit Disorder suggest that several areas of the brain may be affected by the disorder.

They include:

• Frontal Lobes
• Inhibitory Mechanisms of the Cortex
• Limbic System
• Reticular Activating System

Each of these areas of the brain is associated with various functions of the brain.

Above is a sample Q-EEGs of two Attention Deficit Disorder children compared to two non- ADD ADHD children. Read more of the article...

Causes of ADHD

There may be several different "causes of ADHD" as there are different types of ADHD. The most recent research models describing Attention Deficit Hyperactivity Disorder suggest that several areas of the brain may be affected by ADHD. These include the

• frontal lobes
• inhibitory mechanisms of the cortex
• limbic system
• reticular activating system

Each of these areas of the brain is associated with various functions, or qualities, or abilities. Read more of the article...

What Causes ADHD