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Related Concept Videos

Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings.

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Related Experiment Video

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Probing the Brain in Autism Using fMRI and Diffusion Tensor Imaging
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Probing the Brain in Autism Using fMRI and Diffusion Tensor Imaging

Published on: September 12, 2011

[A functional MRI study in ADHD children with impulsivity].

Fei Li1, Bao-Juan Li, De-Wen Hu

  • 1Mental Health Institute, Central South University, Changsha 410011, China.

Zhongguo Dang Dai Er Ke Za Zhi = Chinese Journal of Contemporary Pediatrics
|February 2, 2010
PubMed
Summary

Children with attention deficit hyperactivity disorder (ADHD) and impulsivity show significantly reduced brain activation in specific regions during cognitive tasks. This suggests impaired neural mechanisms underlying impulse control in these children.

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Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)
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Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)

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Using Brain Activation (nir-HEG/Q-EEG) and Execution Measures (CPTs) in a ADHD Assessment Protocol
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Related Experiment Videos

Last Updated: Jun 16, 2026

Probing the Brain in Autism Using fMRI and Diffusion Tensor Imaging
12:21

Probing the Brain in Autism Using fMRI and Diffusion Tensor Imaging

Published on: September 12, 2011

Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)
10:02

Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)

Published on: March 12, 2020

Using Brain Activation (nir-HEG/Q-EEG) and Execution Measures (CPTs) in a ADHD Assessment Protocol
13:09

Using Brain Activation (nir-HEG/Q-EEG) and Execution Measures (CPTs) in a ADHD Assessment Protocol

Published on: April 1, 2018

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Cognitive Science

Context:

  • Impulsivity is a core symptom in Attention Deficit Hyperactivity Disorder (ADHD).
  • Understanding the neural basis of impulsivity in ADHD is crucial for targeted interventions.
  • Previous research has implicated various brain regions in ADHD, but specific patterns related to impulsivity require further elucidation.

Purpose:

  • To investigate the specific functional brain areas associated with impulsive behaviors in children with ADHD using functional Magnetic Resonance Imaging (fMRI).
  • To compare brain activation patterns during an impulsivity-control task (GO-STOP paradigm) between children with ADHD (with and without impulsivity) and typically developing children.

Summary:

  • Functional MRI data from 10 ADHD children with impulsivity, 7 ADHD children without impulsivity, and 9 normal children were analyzed during GO and STOP tasks.
  • Normal children showed activation in frontal regions. ADHD children without impulsivity activated the cerebellum and cingulate gyrus. ADHD children with impulsivity showed activation in the medial globus pallidus and insula during the GO task.
  • During the STOP task, ADHD children with impulsivity exhibited activation in the uncus and putamen, with overall fewer activated regions compared to the other groups.

Impact:

  • Findings reveal distinct neural correlates of impulsivity in ADHD, highlighting reduced brain activation and impaired function in specific cortical and subcortical areas.
  • This research provides insights into the neuromechanisms of impulsivity in ADHD, potentially informing the development of more effective diagnostic and therapeutic strategies.
  • The study underscores the complexity of impulse control in ADHD, indicating significant differences in brain activation patterns associated with varying degrees of impulsivity.