The p300 as a marker of waning attention and error propensity.
The p300 as a marker of waning attention and error propensity.
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DOI：
10.1155/2007/93968
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发表时间：
2007
影响因子：
--
通讯作者：
Manly, Tom
中科院分区：
文献类型：
--
作者：
Datta, Avijit;Cusack, Rhodri;Hawkins, Kari;Heutink, Joost;Rorden, Chris;Robertson, Ian H;Manly, Tom
当常规反应被熟悉的提示不适当地触发时，可能会发生动作错误。在这里，当志愿者执行一项持续时间较长的“去/不去”任务时，脑电被记录下来，这项任务偶尔会出人意料地要求他们保留频繁的、常规的反应。锁定相关GO试验开始的脑电成分根据参与者是错误地对随后的NO-GO试验做出错误反应还是正确地隐瞒他们的反应来分类。错误与前述P300的相对幅度显著降低有关，也就是说，可以判断反应抑制错误是否可能在实际发生之前发生。此外，在整个任务中，P300波幅的波动形成了个体错误倾向的可靠关联，支持将其用作持续控制行动的标志。
Action errors can occur when routine responses are triggered inappropriately by familiar cues. Here, EEG was recorded as volunteers performed a “go/no-go” task of long duration that occasionally and unexpectedly required them to withhold a frequent, routine response. EEG components locked to the onset of relevant go trials were sorted according to whether participants erroneously responded to immediately subsequent no-go trials or correctly withheld their responses. Errors were associated with a significant relative reduction in the amplitude of the preceding P300, that is, a judgement could be made bout whether a response-inhibition error was likely before it had actually occurred. Furthermore, fluctuations in P300 amplitude across the task formed a reliable associate of individual error propensity, supporting its use as a marker of sustained control over action.