Two-Hour Nicotine Withdrawal Improves Inhibitory Control Dysfunction in Male Smokers: Evidence from a Smoking-Cued Go/No-Go Task ERP Study

Abstract

Lu Hou,1,* Jing Zhang,2,* Jing Liu,3 Chang Chen,1 Xuezheng Gao,4 Limin Chen,4 Zhenhe Zhou,1,3 Hongliang Zhou5 1Department of Psychiatry, The Affiliated Wuxi Mental Health Center of Nanjing Medical University, Wuxi City, 214151, People’s Republic of China; 2Department of Psychiatry, Huaian Third People’s Hospital, Huaian City, 223021, People’s Republic of China; 3School of Humanities and Management Science, Wannan Medical College, Wuhu City, 241000, People’s Republic of China; 4Department of Psychiatry, The Affiliated Mental Health Center of Jiangnan University, Wuxi City, 214151, People’s Republic of China; 5Department of Psychology, The Affiliated Hospital of Jiangnan University, Wuxi City, 214151, People’s Republic of China*These authors contributed equally to this workCorrespondence: Zhenhe Zhou, Department of Psychiatry, The Affiliated Wuxi Mental Health Center of Nanjing Medical University, Wuxi City, 214151, People’s Republic of China, Tel [phone], Fax [phone], Email [email protected] Hongliang Zhou, Department of Psychology, the Affiliated Hospital of Jiangnan University, Wuxi City, 214151, People’s Republic of China, Tel [phone], Fax [phone], Email [email protected]: Nicotine withdrawal is a multifaceted physiological and psychological process that can induce a spectrum of mood disturbances. Gaining a more nuanced understanding of how pure nicotine withdrawal influences cognitive control functions may provide valuable insights for the enhancement of smoking cessation programs. This study investigated changes in inhibitory control function in smokers after 2-hour nicotine withdrawal using the event-related potential (ERP) technique.Participants and Methods: 28 nicotine dependence (ND) patients and 28 health controls (HCs) completed a smoking-cued Go/No-go task containing two different types of picture stimuli, smoking-cued and neutral picture stimuli. We analyzed the behavioral and ERP data using a mixed model Repeated Measure Analysis of Variance (ANOVA).Results: No-go trials accuracy rate (ACC) at baseline (time 1) was lower in the ND group compared to HCs with smoking-cued stimuli, and No-go trials ACC after 2-hour nicotine withdrawal (time 2) was not lower in the ND group compared to HCs. When confronted with smoking-cued stimuli, the No-go trials ACC was higher in time 2 than in time 1 in the ND group. For the ERP component, the No-go N2 amplitudes in the ND group with smoking-cued stimuli were lower than that of HCs, whereas after 2-hour nicotine withdrawal, the ND group’s No-go N2 amplitudes higher than that at time 1, and did not differ from that of HCs. No-go P3 amplitudes were not significantly different between the two groups.Conclusion: Evidenced from ERP data, ND patients have an inhibitory control dysfunction in the face of smoking cues, which is mainly manifested in the early stage of response inhibition rather than in the late stage. Two-hour nicotine withdrawal improves inhibitory control dysfunction in ND patients. The No-go N2 component is an important and sensitive neuroelectrophysiological indicator of inhibitory control function in ND patients.Keywords: nicotine dependence, inhibitory control, 2-hour nicotine withdrawal, event-related potentials, Go/No-go task

Keywords

• nicotine dependence
• inhibitory control
• 2-hour nicotine withdrawal
• event-related potentials
• go/no-go task