Impaired Error-Monitoring Function in People with Internet Addiction Disorder: An Event-Related fMRI StudyDong G. · Shen Y. · Huang J. · Du X.
aDepartment of Psychology, Zhejiang Normal University, Jinhua, bDepartment of Psychology, Liaoning Normal University, Dalian, and cDepartment of Physics, Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai, PR China
Background: Internet addiction disorder (IAD) is rapidly becoming a prevalent mental health concern around the world. The neurobiological underpinnings of IAD should be studied to unravel the potential heterogeneity. This study was set to investigate the error-monitoring ability in IAD subjects. Methods: Fifteen IAD subjects and 15 healthy controls (HC) participated in this study. Participants were asked to perform a fast Stroop task that may show error responses. Behavioral and neurobiological results in relation to error responses were compared between IAD subjects and HC. Results: Compared to HC, IAD subjects showed increased activation in the anterior cingulate cortex (ACC) and decreased activation in the orbitofrontal cortex following error responses. Significant correlation was found between ACC activation and the Internet addiction test scores. Conclusions: IAD subjects show an impaired error-monitoring ability compared to HC, which can be detected by the hyperactivation in ACC in error responses.
Guangheng Dong, PhD
Department of Psychology
Zhejiang Normal University, 688 Yingbin Road
Jinhua City 321004, Zhejiang Province (PR China)
Received: September 19, 2012
Accepted: December 30, 2012
Published online: March 23, 2013
Number of Print Pages : 7
Number of Figures : 2, Number of Tables : 2, Number of References : 61
European Addiction Research
Vol. 19, No. 5, Year 2013 (Cover Date: September 2013)
Journal Editor: van den Brink W. (Amsterdam), Kiefer F. (Mannheim)
ISSN: 1022-6877 (Print), eISSN: 1421-9891 (Online)
For additional information: http://www.karger.com/EAR
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