Is Attention Deficit Hyperactivity Disorder A Real Disorder?
Beyond our own observations and experiences, Neuroimaging results (MRI, PET, SPECT, etc.) have found differences in brain development and/or brain activity in individuals with Attention Deficit Hyperactivity Disorder (ADHD) in several areas of the brain, such as the cerebral cortex (frontal, parietal, and temporal lobes), basal ganglia, cerebellum, and other areas.
Frontal Lobe – decisions & planning
Parietal Lobe – processing sensory information from the body
Temporal Lobe – memory & emotion
Basal Ganglia – movement, coordination, cognition, & memory
Cerebellum – attention, fine movement coordination, & balance
In the field of Molecular Genetics, several gene associations have been identified, such as the 7-Repeat Allele (7R) of the Dopamine Receptor D4 Gene (DRD4) located on Chromosome 11; an allele is an alternative form, or variant, of the D4 Gene. Some studies have shown a strong correlations with some genes, while other studies have shown a weaker significant association.