What Brain Structure and Function Differences Are Seen in MRI Scans of ADHD Patients?

PostedAugust 19, 2025

UpdatedSeptember 4, 2025

ByMy Patient Advice

Author: Harriet Winslow, BSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

ADHD MRI research has revealed several key brain structure and function differences in individuals with ADHD. MRI scans of patients with ADHD often show abnormalities in regions of the brain responsible for executive function, such as the prefrontal cortex. This area is crucial for decision-making, impulse control, attention, and goal-oriented behaviour. Structural differences in this region can contribute to the ADHD behaviour of impulsivity and inattention, which are hallmark symptoms of the condition.

In addition to the prefrontal cortex, ADHD MRI research has also highlighted differences in the basal ganglia and cerebellum. The basal ganglia, involved in motor control and reward processing, may exhibit altered activity in individuals with ADHD, leading to hyperactivity and difficulties with self-regulation. The cerebellum, which is responsible for coordinating movement and attention, also shows structural changes in many ADHD patients. These brain structure differences are linked to various ADHD cognitive issues and behavioural difficulties.

Common Symptoms Linked to Brain Structure and Function Differences

The brain structure and function differences seen in ADHD MRI research contribute to several common symptoms of ADHD, including:

Impulsivity

Difficulty controlling impulses can lead to behaviours such as interrupting others or making snap decisions.

Inattention

Challenges in maintaining focus on tasks, following instructions, and staying organised.

Hyperactivity

Excessive movement or restlessness, which is often seen in children with ADHD.

Understanding these brain structure and function differences, particularly in relation to neurodevelopment, can help explain the challenges individuals with ADHD face and provide insight into managing the condition more effectively.

Visit providers like ADHD Certify for personal consultations and expert advice tailored to your needs.

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Brain Structure and Function.

Harriet Winslow, BSc

Author

Harriet Winslow is a clinical psychologist with a Bachelor’s in Clinical Psychology and extensive experience in behaviour therapy and developmental disorders. She has worked with children and adolescents with ADHD, autism spectrum disorder (ASD), learning disabilities, and behavioural challenges, providing individual and group therapy using evidence-based approaches such as CBT and DBT. Dr. Winslow has developed and implemented personalised treatment plans, conducted formal and informal assessments, and delivered crisis intervention for clients in need of urgent mental health care. Her expertise spans assessment, treatment planning, and behavioural intervention for both neurodevelopmental and mental health conditions.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.