Response monitoring without sensory feedback
Response monitoring without sensory feedback
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DOI：
10.1016/j.clinph.2004.04.013
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发表时间：
2004-09-01
影响因子：
4.7
通讯作者：
Vidal, F
中科院分区：
文献类型：
--
作者：
Allain, S;Hasbroucq, T;Vidal, F
目的：被试在快速任务中犯错误时诱发电位的“错误负性”（Ne）常被作为反应监测过程的指标。在纯粹正确的试验中出现的类Ne波挑战了目前关于这种监测系统性质的概念。在这里，我们评估的可能性，正确的审判Ne样波仅仅是由于reaffeedness，并在同一时间，我们直接测试的一般意见，根据该Ne是由内部signal.Methods产生：我们研究了一个Ne样波在一个完全deafferented病人的存在。病人进行两个反应时间（RT）的任务：一个两个响应RT任务和一个去/不去task.Results：在这个病人中，一个Ne发生错误，不正确的EMG激活，并在纯粹正确的反应。在误差方面，Ne明显地被误差阳性（Pe）所跟随。结论：Ne和类Ne波不是由反射产生的。这种相似性是一个进一步的论点，认为这两个波是相同的nature.Significance：目前的数据表明，感官信息是不是强制性的大脑监测和纠正正在进行的反应。(C)2004年国际临床神经生理学联合会。由Elsevier爱尔兰有限公司出版。保留所有权利。
Objective: The elicitation of an evoked potential, the 'error negativity' (Ne) when subjects commit errors in speeded tasks, is often taken as an index of response monitoring processes. The presence of a Ne-like wave on purely correct trials challenges the current conceptions about the nature of such a monitoring system. Here, we evaluate the possibility that the Ne-like wave on correct trials is merely due to reafferences, and at the same time, we test directly the general opinion according to which the Ne is generated by an internal signal.Methods: We studied the presence of a Ne-like wave in a completely deafferented patient. The patient performed two reaction time (RT) tasks: a two-responses RT task and a go/no-go task.Results: In this patient, a Ne occurs on errors, on incorrect EMG activations, and on purely correct responses. On errors, the Ne was clearly followed by an error positivity (Pe).Conclusions: The Ne and the Ne-like wave are not generated by reafferences. This similarity is a further argument to consider that these two waves are of same nature.Significance: The present data demonstrate that sensory information is not mandatory for the brain to monitor and correct ongoing responses. (C) 2004 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.