The temporal orienting P3 effect to non-target stimuli: Does it reflect motor inhibition?
The temporal orienting P3 effect to non-target stimuli: Does it reflect motor inhibition?
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DOI：
10.1016/j.biopsycho.2011.12.010
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发表时间：
2012-02-01
影响因子：
2.6
通讯作者：
Lange, Kathrin
中科院分区：
文献类型：
--
作者：
Lange, Kathrin
时间定向增强听觉处理的早期（N1）和晚期（P3）阶段。然而，这些影响的功能意义尚未解决。本研究检验了运动抑制理论对非靶刺激的时间定向P3效应的解释。使用时间线索范式，其中运动准备的水平（高与低）是不同的：如果运动准备是较高的，更多的抑制是必要的，以阻止响应时，非目标是在出席的时间点。因此，如果增强的P3到临时关注的非目标反映了增加的运动抑制，更高的运动准备应该进一步增强P3。总的来说，时间定向增强了N1和P3，从而复制了早期的研究结果。此外，运动准备越高，时间定向P3效应越大。然而，与运动抑制帐户不一致，临时出席非目标的P3没有作为运动准备的功能不同。(C)2011 Elsevier B.V.保留所有权利。
Temporal orienting enhances early (N1) and late (P3) stages of auditory processing. However, the functional significance of these effects has not been settled yet. The present study tested a motor inhibition account on the temporal orienting P3 effect to non-target stimuli. A temporal cuing paradigm was used, where the level of motor preparation (high vs. low) was varied: If motor preparation is higher, more inhibition is necessary to withhold a response when a non-target is presented at the attended time point. Consequently, if the enhanced P3 to temporally attended non-targets reflected increased motor inhibition, higher motor preparation should further enhance the P3. Overall, temporal orienting enhanced both the N1 and the P3, thus replicating earlier findings. Moreover, the temporal orienting P3 effect was larger when motor preparation was higher. Inconsistent with the motor-inhibition account, however, the P3 to temporally attended non-targets did not differ as a function of motor preparation. (C) 2011 Elsevier B.V. All rights reserved.