Mediofrontal negativities to averted gains and losses in the slot-machine task - A further investigation
Mediofrontal negativities to averted gains and losses in the slot-machine task - A further investigation
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DOI：
10.1027/0269-8803.19.4.256
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发表时间：
2005-01-01
影响因子：
1.3
通讯作者：
van Boxtel, GJM
中科院分区：
文献类型：
--
作者：
Donkers, FCL;van Boxtel, GJM
在以前的一项研究中，我们探讨了反馈相关的消极(FRN)是否可以由不依赖于任何先前的选择或行动的结果引起(Donkers，Nieuwenhuis，&Van Boxtel，2005)。参与者参与了一项简单的老虎机任务，在没有回答的情况下，他们经历了金钱上的得失。此外，他们还完成了一项经常用于研究FRN的时间估计任务，以及一项引起错误相关负波(Ne/ERN)的侧翼任务。老虎机任务的结果产生了中等强度的负向，其幅度与时间估计任务中与负反馈相关的FRN的幅度相关。然而，无论是对于避免收益的(不利的)结果还是对于避免金钱损失的(有利的)结果，都观察到了正额正中负面，这一发现与之前的FRN研究不一致。在本研究中，我们考察了在老虎机任务中观察到的中等音调负性与频率敏感的N_2之间的相似性。我们操纵了老虎机任务中获得收益和损失的总频率，并比较了不同试验概率中避免的收益和损失的负值。结果表明，意外的不利结果比预期的不利结果引发了更大的反馈相关负面影响。
In a previous study we addressed the question whether a feedback-related negativity (FRN) can be elicited by outcomes that are not contingent on any preceding choice or action (Donkers, Nieuwenhuis, & Van Boxtel, 2005). Participants took part in a simple slot-machine task in which they experienced monetary gains and losses in the absence of responses. In addition, they performed a time estimation task often used to study the FRN, and a flanker task known to elicit the error-related negativity (Ne/ERN). Outcomes in the slot-machine task elicited a medioftontal negativity whose amplitude correlated with the amplitude of the FRN associated with negative feedback in the time estimation task. However, the mediofrontal negativity was observed both for (unfavorable) outcomes that averted a gain and for (favorable) outcomes that averted a loss of money, a finding that is inconsistent with previous FRN research. In the present study we examined the similarity between the medioftontal negativity observed in the slot-machine task and the frequency-sensitive N2. We manipulated the overall frequency of obtaining gains and losses in the slot-machine task and compared the negativities on averted gains and losses across the different trial probabilities. The results showed that larger feedback-related negativities were elicited by unexpected unfavorable outcomes than by expected unfavorable outcomes.