Dorsolateral prefrontal cortex dysfunction caused by a go/no-go task in children with attention-deficit hyperactivity

Ting Wu1, Xiaoli Liu1, Fang Cheng1

  • 1Affiliated Mental Health Centre & Ningbo Kangning Hospital, Ningbo University, Ningbo, Zhejiang, China.

Insights

Children with attention-deficit hyperactivity disorder (ADHD) show reduced prefrontal brain activity during a go/no-go task. Functional near-infrared spectroscopy (fNIRS) revealed significant differences in brain function between ADHD and typically developing children.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Medical Imaging

Background:

  • Attention-deficit hyperactivity disorder (ADHD) is linked to executive function deficits.
  • These deficits are associated with prefrontal brain region dysfunction.
  • Understanding ADHD-related brain alterations is crucial for effective interventions.

Purpose of the Study:

  • To evaluate prefrontal brain activity alterations in children with ADHD.
  • To compare brain activity during a go/no-go task between ADHD and typically developing (TD) children.
  • To utilize functional near-infrared spectroscopy (fNIRS) for assessing brain function.

Main Methods:

  • Recruited 32 children with ADHD and 31 TD children.
  • Administered a go/no-go task to all participants.
  • Measured changes in oxygenated hemoglobin (Δavg oxy-Hb) in the prefrontal lobe using fNIRS.

Main Results:

  • Observed significant differences in brain activity between left and right dorsolateral prefrontal cortices.
  • The ADHD group exhibited lower Δavg oxy-Hb changes compared to the TD group.
  • fNIRS data indicated functional impairments in the prefrontal cortex of children with ADHD.

Conclusions:

  • Prefrontal cortex functional impairments are associated with ADHD-related brain dysfunction.
  • The go/no-go task combined with fNIRS is a valuable tool for assessing prefrontal dysfunction in ADHD.
  • This approach aids in understanding and potentially diagnosing ADHD in children.
Abstract