Effects of information and reward on stimulus-preceding negativity prior to feedback stimuli
Effects of information and reward on stimulus-preceding negativity prior to feedback stimuli
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DOI：
10.1111/1469-8986.00082
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发表时间：
2003-09-01
期刊：
影响因子：
3.7
通讯作者：
Aihara, Y
中科院分区：
文献类型：
--
作者：
Kotani, Y;Kishida, S;Aihara, Y
本研究旨在探讨反馈刺激的信息水平和动机水平对刺激前负性（SPN）的影响。在时间估计任务中，其中一个视觉刺激后3秒的自愿运动，（a）信息水平（高信息和低信息）和（B）的动机水平（奖励和无奖励）的反馈刺激被操纵。在高信息条件下，受试者收到关于（1）正确性（正确或不正确），（2）错误方向（低估或高估）和（3）他们的时间估计的准确度（准确或不太准确）的反馈信息。然而，在低信息条件下，他们只收到关于正确性的信息。在奖励条件下，他们因准确的时间估计而获得金钱奖励，但在无奖励条件下什么也没有得到。结果表明，信息与动机水平之间存在显著的交互作用，奖励/高信息条件下的SPN幅值大于无奖励/高信息条件下的SPN幅值。结果进行了讨论的情绪预期，考虑到自我报告的结果，受试者感到更积极的时候，他们收到的准确信息。
The purpose of the present study was to investigate the effects of informational and motivational level of feedback stimuli on the stimulus-preceding negativity (SPN). In the time estimation task, in which a visual stimulus was presented 3 s after a voluntary movement, (a) the information level (high information and low information) and (b) the motivation level (reward and no-reward) for feedback stimuli were manipulated. Under the high-information condition, subjects received feedback information about (1) correctness (correct or incorrect), (2) direction of error (under- or overestimate), and (3) degree of accuracy (accurate or less accurate) of their time estimation. In the low-information condition, however, they received information about the correctness only. In the reward condition, they received a monetary reward for accurate time estimations but received nothing in the no-reward condition. The results demonstrated a significant interaction of information by motivation level, showing that the SPN amplitude under the reward/high-information was larger than that in the no-reward/high-information condition. The results are discussed in terms of emotional anticipation, taking into consideration the result of self-report that subjects felt to be more motivated when they received precise information.