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Zhao Q, Li H, Hu B, Li Y, Gillebert CR, Mantini D, Liu Q. Neural Correlates of Drug-Related Attentional Bias in Heroin Dependence. Front Hum Neurosci 2018; 11:646. [PMID: 29410620 PMCID: PMC5787086 DOI: 10.3389/fnhum.2017.00646] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 12/18/2017] [Indexed: 01/29/2023] Open
Abstract
The attention of drug-dependent persons tends to be captured by stimuli associated with drug consumption. This involuntary cognitive process is considered as attentional bias (AB). AB has been hypothesized to have causal effects on drug abuse and drug relapse, but its underlying neural mechanisms are still unclear. This study investigated the neural basis of AB in abstinent heroin addicts (AHAs), combining event-related potential (ERP) analysis and source localization techniques. Electroencephalography data were collected in 21 abstinent heroin addicts and 24 age- and gender-matched healthy controls (HCs) during a dot-probe task. In the task, a pair of drug-related image and neutral image was presented randomly in left and right side of the cross fixation, followed by a dot probe replacing one of the images. Behaviorally, AHAs had shorter reaction times (RTs) for the congruent condition compared to the incongruent condition, whereas this was not the case in the HCs. This finding demonstrated the presence of AB towards drug cues in AHAs. Furthermore, the image-evoked ERPs in AHAs had significant shorter P1 latency compared to HCs, as well as larger N1, N2, and P2 amplitude, suggesting that drug-related stimuli might capture attention early and overall require more attentional resources in AHAs. The target-related P3 had significantly shorter latency and lower amplitude in the congruent than incongruent condition in AHAs compared to HCs. Moreover, source localization of ERP components revealed increased activity for AHAs as compared to HCs in the dorsal posterior cingulate cortex (dPCC), superior parietal lobule and inferior frontal gyrus (IFG) for image-elicited responses, and decreased activity in the occipital and the medial parietal lobes for target-elicited responses. Overall, the results of our study confirmed that AHAs may exhibit AB in drug-related contexts, and suggested that the bias might be related to an abnormal neural activity, both in early and late attention processing stages.
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Affiliation(s)
- Qinglin Zhao
- Ubiquitous Awareness and Intelligent Solutions Lab, Lanzhou University, Lanzhou, China
| | - Hongqian Li
- Ubiquitous Awareness and Intelligent Solutions Lab, Lanzhou University, Lanzhou, China
| | - Bin Hu
- Ubiquitous Awareness and Intelligent Solutions Lab, Lanzhou University, Lanzhou, China
| | - Yonghui Li
- Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Céline R. Gillebert
- Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom
- Department of Brain and Cognition, KU Leuven, Leuven, Belgium
| | - Dante Mantini
- Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom
- Research Centre for Motor Control and Neuroplasticity, KU Leuven, Leuven, Belgium
- Neural Control of Movement Lab, ETH Zurich, Zurich, Switzerland
| | - Quanying Liu
- Research Centre for Motor Control and Neuroplasticity, KU Leuven, Leuven, Belgium
- Neural Control of Movement Lab, ETH Zurich, Zurich, Switzerland
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Falkenstein M. The Journal of Psychophysiology:. J PSYCHOPHYSIOL 2008. [DOI: 10.1027/0269-8803.22.1.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Michael Falkenstein
- Leibniz Research Centre for Working Environment and Human Factors Dortmund, Germany
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