Age-related changes in cognitive conflict processing:: An event-related potential study
Age-related changes in cognitive conflict processing:: An event-related potential study
复制标题
DOI：
10.1016/j.neurobiolaging.2006.08.001
复制
发表时间：
2007-12-01
影响因子：
4.2
通讯作者：
Falkenstein, Michael
中科院分区：
文献类型：
--
作者：
Mager, Ralph;Bullinger, Alex H.;Falkenstein, Michael
涉及冲突刺激和反应的认知任务与早期年龄相关的表现下降有关。冲突和冲突引起的干扰可能与刺激或反应相关。在经典的刺激-反应相容性任务中，例如斯特鲁普任务，事件相关电位（ERP）通常会揭示不一致试验与一致试验的更大消极性，这通常与冲突处理有关。然而，目前尚不清楚这种消极情绪是否与刺激或反应相关的冲突有关，因此与年龄相关的变化的含义尚无定论。在本研究中，使用修改后的斯特鲁普任务来关注与刺激相关的干扰过程，同时排除与反应相关的干扰。由于我们打算研究与工作相关的影响，因此在年轻（约 30 岁）和中年（约 50 岁）健康受试者（总共 n= 80）中确定了 ERP 和表现。在 ERP 中，在 350 至 650 毫秒之间的不一致刺激与一致刺激后出现了广泛的消极情绪。观察到这种消极情绪的潜伏期和幅度与年龄相关。这些结果表明，在中年时，冲突刺激的处理就已经发生了与年龄相关的变化。 (C) 2006 Elsevier Inc. 保留所有权利。
Cognitive tasks involving conflicting stimuli and responses are associated with an early age-related decline in performance. Conflict and conflict-induced interference can be stimulus- or response-related. In classical stimulus-response compatibility tasks, such as the Stroop task, the event-related potential (ERP) usually reveals a greater negativity on incongruent versus congruent trials which has often been linked with conflict processing. However, it is unclear whether this negativity is related to stimulus- or response-related conflict, thus rendering the meaning of age-related changes inconclusive. In the present study, a modified Stroop task was used to focus on stimulus-related interference processes while excluding response-related interference. Since we intended to study work-relevant effects ERPs and performance were determined in young (about 30 years old) and middle-aged (about 50 years old) healthy subjects (total n= 80). In the ERP, a broad negativity developed after incongruent versus congruent stimuli between 350 and 650 ms. An age-related increase of the latency and amplitude of this negativity was observed. These results indicate age-related alterations in the processing of conflicting stimuli already in middle age. (C) 2006 Elsevier Inc. All rights reserved.