Gao Heming, Qi Mingming, Zhang Qi
aDepartment of Psychology, School of Psychology, Liaoning Normal University, Dalian bKey Laboratory of Cognition and Personality, Faculty of Psychology, Southwest University, Chongqing, China.
Neuroreport. 2017 May 3;28(7):404-407. doi: 10.1097/WNR.0000000000000764.
The present study aimed to measure the response inhibition by embedding a secondary probe task within a Go/NoGo paradigm. The response time for the probe and the time course of the discrimination process for the probe shown by event-related potentials were measured to investigate the effect of response inhibition. The results showed that the probe response time were longer for the NoGo-probes versus Go-probes, indicating a more cognitively demanding process in processing NoGo stimuli. The event-related potential results showed that the NoGo stimuli evoked a more positive frontal P3 component relative to the Go stimuli. Compared with the NoGo-probes, the Go-probes evoked enhanced N1, but decreased P2 and P3 components over frontocentral scalps, indicating increased orienting process, but decreased selective attention process for the Go-probes. These results indicated that response inhibition (NoGo) was more cognitively demanding than the response activation (Go).
本研究旨在通过在Go/NoGo范式中嵌入次要探测任务来测量反应抑制。测量了探测的反应时间以及事件相关电位显示的探测辨别过程的时间进程，以研究反应抑制的效果。结果表明，与Go探测相比，NoGo探测的探测反应时间更长，这表明在处理NoGo刺激时需要更多的认知过程。事件相关电位结果表明，与Go刺激相比，NoGo刺激诱发了更正向的额叶P3成分。与NoGo探测相比，Go探测在额中央头皮上诱发了增强的N1，但P2和P3成分减少，这表明Go探测的定向过程增加，但选择性注意过程减少。这些结果表明，反应抑制（NoGo）比反应激活（Go）需要更多的认知过程。
