Introduction: Suicide is the second leading cause of death among adolescents. Suicidal behavior is associated with impairments in attention. Attention can be directed toward relevant events in the environment either actively, under voluntary control, or passively, by external salient events. The extent to which the risk for suicidal behavior affects active and passive attention is largely unknown. Methods: Event-related potentials (ERPs) were recorded while 14 adolescents with acute suicidal behavior and 14 healthy controls performed an auditory 3-stimulus oddball task. The task consisted of standard (80%), target (10%), and novel (10%) stimuli. The participants were instructed to press a button upon presentation of the target. The novel stimuli were unexpected and irrelevant to the target detection task. Results: Accuracy of target detection was slightly but significantly reduced in the suicidal group. There were no significant differences in the amplitude of the target-N2 or -P3b between groups. There was a slight, but nonsignificant, increase in the amplitude of the novel-N2 and -P3 in the suicidal group. Conclusions: This is the first study to explore both passive and controlled aspects of attention using ERPs in adolescents with acute suicidal behavior. Although there were no significant ERP group differences, this is an important step in identifying objective markers of suicide risk among adolescents.

中文翻译：

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青少年自杀未遂者的主动和被动注意处理：与事件相关的潜在研究

简介：自杀是青少年死亡的第二大原因。自杀行为与注意力障碍有关。注意力可以主动地、在自愿控制下或被动地通过外部显着事件引导到环境中的相关事件上。自杀行为风险影响主动和被动注意力的程度在很大程度上是未知的。方法：记录事件相关电位 (ERP)，同时记录 14 名有急性自杀行为的青少年和 14 名健康对照者执行听觉 3 刺激古怪任务。任务包括标准 (80%)、目标 (10%) 和新 (10%) 刺激。参与者被指示在目标出现时按下按钮。新的刺激是出乎意料的，与目标检测任务无关。结果：在自杀组中，目标检测的准确性略有下降，但显着降低。组间目标-N2 或-P3b 的幅度没有显着差异。自杀组中新型-N2 和-P3 的幅度有轻微但不显着的增加。结论：这是第一项使用 ERPs 在有急性自杀行为的青少年中探索被动和受控方面的注意力的研究。虽然没有显着的 ERP 组差异，但这是确定青少年自杀风险客观指标的重要一步。自杀组中新型-N2和-P3的振幅增加。结论：这是第一项使用 ERPs 在有急性自杀行为的青少年中探索被动和受控方面的注意力的研究。虽然没有显着的 ERP 组差异，但这是确定青少年自杀风险客观指标的重要一步。自杀组中新型-N2和-P3的振幅增加。结论：这是第一项使用 ERPs 在有急性自杀行为的青少年中探索被动和受控方面的注意力的研究。虽然没有显着的 ERP 组差异，但这是确定青少年自杀风险客观指标的重要一步。