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Addict Behav. 2015 Jun;45:156-63. doi: 10.1016/j.addbeh.2015.01.008. Epub 2015 Jan 20.

Blunted feedback processing during risk-taking in adolescents with features of problematic Internet use.

Author information

1
Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA.
2
Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA; Department of Neurobiology, Yale University School of Medicine, New Haven, CT, USA; Yale Child Study Center, Yale University School of Medicine, New Haven, CT, USA.
3
Yale Child Study Center, Yale University School of Medicine, New Haven, CT, USA.
4
Yale Child Study Center, Yale University School of Medicine, New Haven, CT, USA. Electronic address: michael.crowley@yale.edu.

Abstract

While the conceptualization of problematic Internet use (PIU) as a "behavioral addiction" resembling substance-use disorders is debated, the neurobiological underpinnings of PIU remain understudied. This study examined whether adolescents displaying features of PIU (at-risk PIU; ARPIU) are more impulsive and exhibit blunted responding in the neural mechanisms underlying feedback processing and outcome evaluation during risk-taking. Event-related potentials (ERPs) elicited by positive (i.e. reward) and negative (i.e. loss) feedback were recorded during performance on a modified version of the Balloon Analogue Risk Task (BART) among ARPIU (n=39) and non-ARPIU subjects (n=27). Compared to non-ARPIU, ARPIU adolescents displayed higher levels of urgency and lack of perseverance on the UPPS Impulsive Behavior Scale. Although no between-group difference in BART performance was observed, ERPs demonstrated overall decreased sensitivity to feedback in ARPIU compared to non-ARPIU adolescents, as indexed by blunted feedback-related negativity (FRN) and P300 amplitudes to both negative and positive feedback. The present study provides evidence for feedback processing during risk-taking as a neural correlate of ARPIU. Given recent concerns regarding the growing prevalence of PIU as a health concern, future work should examine the extent to which feedback processing may represent a risk factor for PIU, a consequence of PIU, or possibly both.

KEYWORDS:

Feedback processing; Feedback-related negativity; P300; Problematic Internet use

PMID:
25679363
PMCID:
PMC4517289
DOI:
10.1016/j.addbeh.2015.01.008
[Indexed for MEDLINE]
Free PMC Article
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