What Parts of the Brain Does ADHD Affect?

Attention deficit hyperactivity disorder is a condition that affects one's ability to pay attention and control impulses. According to the Mayo Clinic, individuals with ADHD may have brains that are structurally different from others. Also, those with ADHD appear to have less brain activity in the areas of the brain that regulates attention and activity control.

Frontal Cortices

• The frontal cortices of those with ADHD may be smaller than normal.

Anterior Temporal Lobes

• The anterior temporal lobes may also be reduced in size.

Posterior Temporal Lobes

• The posterior temporal lobes may contain an increased amount of grey matter.

Inferior Parietal Cortices

• The inferior parietal cortices may also contain an excessive amount of grey matter.

Brain Chemicals

• Children with ADHD may have different amounts of brain chemicals. According to one study, children with ADHD have an excessive amount of glutamate, which is a brain stimulant. In addition, children with ADHD may have lower than normal amounts of the GABA chemical, which helps controls impulses.