Orbitofrontal dysfunction during the reward process in adults with ADHD: An fMRI study

Research output: Contribution to journalArticle

Abstract

Objective: The present study aimed to detect differences in the reward response between adults with attention deficit hyperactivity disorder (ADHD) and healthy controls (HCs) using functional magnetic resonance imaging (fMRI). Methods: The Iowa gambling task (IGT) was designed to explore participants’ reward-related decision-making in relation to selections during risky behaviors. Twenty adults with ADHD and 20 HCs were enrolled. fMRI with a modified IGT was performed. Results: The adults with ADHD showed a poorer performance in terms of avoidance during risky behaviors. The fMRI results indicated that the adults with ADHD had significantly lower orbitofrontal cortex (OFC) activation. A positive correlation between performance in the IGT and brain activation in the OFC was detected. Conclusions: The results suggested that the adults with ADHD exhibited abnormal OFC responses during decision-making. Significance: To the best of our knowledge, this is the first study to use fMRI to collect brain activation data while performing the IGT in adults with ADHD. Our findings suggest that deficits in reward processing in ADHD are still present during adulthood.

Original languageEnglish
Pages (from-to)627-633
Number of pages7
JournalClinical Neurophysiology
Volume130
Issue number5
DOIs
Publication statusPublished - 2019 May 1

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Attention Deficit Disorder with Hyperactivity
Reward
Magnetic Resonance Imaging
Gambling
Prefrontal Cortex
Decision Making
Brain

All Science Journal Classification (ASJC) codes

  • Sensory Systems
  • Neurology
  • Clinical Neurology
  • Physiology (medical)

Cite this

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title = "Orbitofrontal dysfunction during the reward process in adults with ADHD: An fMRI study",
abstract = "Objective: The present study aimed to detect differences in the reward response between adults with attention deficit hyperactivity disorder (ADHD) and healthy controls (HCs) using functional magnetic resonance imaging (fMRI). Methods: The Iowa gambling task (IGT) was designed to explore participants’ reward-related decision-making in relation to selections during risky behaviors. Twenty adults with ADHD and 20 HCs were enrolled. fMRI with a modified IGT was performed. Results: The adults with ADHD showed a poorer performance in terms of avoidance during risky behaviors. The fMRI results indicated that the adults with ADHD had significantly lower orbitofrontal cortex (OFC) activation. A positive correlation between performance in the IGT and brain activation in the OFC was detected. Conclusions: The results suggested that the adults with ADHD exhibited abnormal OFC responses during decision-making. Significance: To the best of our knowledge, this is the first study to use fMRI to collect brain activation data while performing the IGT in adults with ADHD. Our findings suggest that deficits in reward processing in ADHD are still present during adulthood.",
author = "Yang, {Dong Yu} and Mei-Hung Chi and Chu, {Ching Lin} and Chun-Yu Lin and Shuo-En Hsu and Kao-Ching Chen and I-Hui Lee and Po-See Chen and Yen-Kuang Yang",
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AU - Yang, Dong Yu

AU - Chi, Mei-Hung

AU - Chu, Ching Lin

AU - Lin, Chun-Yu

AU - Hsu, Shuo-En

AU - Chen, Kao-Ching

AU - Lee, I-Hui

AU - Chen, Po-See

AU - Yang, Yen-Kuang

PY - 2019/5/1

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N2 - Objective: The present study aimed to detect differences in the reward response between adults with attention deficit hyperactivity disorder (ADHD) and healthy controls (HCs) using functional magnetic resonance imaging (fMRI). Methods: The Iowa gambling task (IGT) was designed to explore participants’ reward-related decision-making in relation to selections during risky behaviors. Twenty adults with ADHD and 20 HCs were enrolled. fMRI with a modified IGT was performed. Results: The adults with ADHD showed a poorer performance in terms of avoidance during risky behaviors. The fMRI results indicated that the adults with ADHD had significantly lower orbitofrontal cortex (OFC) activation. A positive correlation between performance in the IGT and brain activation in the OFC was detected. Conclusions: The results suggested that the adults with ADHD exhibited abnormal OFC responses during decision-making. Significance: To the best of our knowledge, this is the first study to use fMRI to collect brain activation data while performing the IGT in adults with ADHD. Our findings suggest that deficits in reward processing in ADHD are still present during adulthood.

AB - Objective: The present study aimed to detect differences in the reward response between adults with attention deficit hyperactivity disorder (ADHD) and healthy controls (HCs) using functional magnetic resonance imaging (fMRI). Methods: The Iowa gambling task (IGT) was designed to explore participants’ reward-related decision-making in relation to selections during risky behaviors. Twenty adults with ADHD and 20 HCs were enrolled. fMRI with a modified IGT was performed. Results: The adults with ADHD showed a poorer performance in terms of avoidance during risky behaviors. The fMRI results indicated that the adults with ADHD had significantly lower orbitofrontal cortex (OFC) activation. A positive correlation between performance in the IGT and brain activation in the OFC was detected. Conclusions: The results suggested that the adults with ADHD exhibited abnormal OFC responses during decision-making. Significance: To the best of our knowledge, this is the first study to use fMRI to collect brain activation data while performing the IGT in adults with ADHD. Our findings suggest that deficits in reward processing in ADHD are still present during adulthood.

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