title: The role of trait impulsivity in response inhibition: event-related potentials in a stop-signal task.
abstract: The study examined the relation between self-reported impulsivity and inhibitory control in normal individuals. We compared stopping performance and neural correlates of stopping on stop-signal task between participants who scored in the top (n=12) and bottom 25% (n=12) on Impulsivity Scale from a sample of 305 male adults. Participants scoring high on impulsivity did not show impaired inhibitory control. However, it seems that the high impulsive tended to make more errors of commission and omission. Enhanced N1 amplitudes were found in successful than failed inhibition trials. The high impulsive group had smaller P3 amplitude than the low impulsive group. It appears that the high impulsive group may have a less efficient inhibitory control. Impulsivity Scale non-planning impulsiveness score and inattention score of Adult ADHD Self-Report Scale (ASRS) were negatively correlated with P3 amplitudes on successful inhibition trails, suggesting that impulsivity could have the potential influence on inhibitory control.
authors: Department of Occupational Therapy, College of Medicine, Chang Gung University, 259, Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan. Electronic address: shenih@mail.cgu.edu.tw.
authors: I-Hsuan
authors: IH
authors: Shen
authors: Department of Industrial Management, Oriental Institute of Technology, 58, Sec. 2, Sihchuan Rd., Pan-Chiao Dist., New Taipei 220, Taiwan.
authors: Der-Song
authors: DS
authors: Lee
authors: Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, 5 Fu-Hsing Street, Kwei-Shan, Tao-Yuan 333, Taiwan; Graduate Institute of Early Intervention, College of Medicine, Chang Gung University, 259, Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan.
authors: Chia-ling
authors: CL
authors: Chen
mesh_terms: D000328:Adult; D001921:Brain / Q000502:physiology*; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology*; D056344:Executive Function / Q000502:physiology*; D006801:Humans; D007175:Impulsive Behavior / Q000503:physiopathology*; D007266:Inhibition, Psychological; D008297:Male; D010551:Personality / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology
keywords: Event-related potential; Impulsiveness; Inhibitory control; Stop-signal task