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Related Experiment Video

Updated: Jan 22, 2026

Using Brain Activation nir-HEG/Q-EEG and Execution Measures CPTs in a ADHD Assessment Protocol
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Temporal Variability-Based Functional Brain Lateralization Study in ADHD.

Hongliang Zou1, Jian Yang1

  • 1Nanjing University of Science and Technology, P.R. China.

Journal of Attention Disorders
|July 4, 2019
PubMed
Summary
This summary is machine-generated.

Attention-deficit/hyperactivity disorder (ADHD) is linked to altered brain temporal variability and lateralization. ADHD patients show distinct patterns in brain regions like the frontal gyrus and amygdala compared to controls.

Keywords:
ADHDbrain lateralizationrs-fMRItemporal variability

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Brain Imaging

Background:

  • Attention-deficit/hyperactivity disorder (ADHD) is a complex neurodevelopmental disorder.
  • Brain lateralization, the specialization of brain hemispheres for certain functions, is crucial for cognitive processes.
  • Understanding the interplay between temporal variability and lateralization in ADHD may elucidate its underlying pathophysiology.

Purpose of the Study:

  • To investigate the relationship between temporal variability in brain regions and brain lateralization in individuals with ADHD.
  • To compare these measures between ADHD patients and healthy controls.

Main Methods:

  • Resting-state functional magnetic resonance imaging (rs-fMRI) data were acquired from 116 participants.
  • Temporal variability was calculated for each of the 116 brain regions.
  • Brain lateralization indices were computed and compared between ADHD patients and controls.

Main Results:

  • ADHD participants exhibited significantly higher temporal variability in specific left-hemisphere regions, including the superior frontal gyrus and inferior parietal lobule.
  • Conversely, lower temporal variability was observed in the amygdala, caudate, and putamen in ADHD patients.
  • Significant alterations in brain lateralization were found in ADHD, particularly in the orbitofrontal cortex and rectus gyrus, with correlations to clinical symptoms.

Conclusions:

  • The findings suggest that altered temporal variability and lateralization are characteristic features of ADHD.
  • These neuroimaging findings provide insights into the neural mechanisms underlying ADHD.
  • Further research can explore these markers for potential diagnostic or therapeutic targets.