The feedback negativity reflects favorable compared to nonfavorable outcomes based on global, not local, alternatives.
The feedback negativity reflects favorable compared to nonfavorable outcomes based on global, not local, alternatives.
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DOI：
10.1111/psyp.12002
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发表时间：
2013-02
期刊：
影响因子：
3.7
通讯作者：
Hajcak G
中科院分区：
文献类型：
--
作者：
Kujawa A;Smith E;Luhmann C;Hajcak G
反馈负性（FN）已被证明能够以上下文相关的方式反映可能结果的二元评估，但尚不清楚上下文依赖是基于全局还是局部替代方案。提示赌博任务用于检查 FN 是否对给定试验的可能结果或试验中的结果范围敏感。在 50% 的试验中，参与者可能会收支平衡或亏损；在剩下的试验中，参与者可能获胜或收支平衡。相对于当前任务的所有可能性而言，收支平衡是一个不利的结果，但在 50% 的试验中却是最好的结果。结果表明，在两种情况下，收支平衡都会引发 FN，而奖励反馈与积极性增强有着独特的相关性。结果表明，FN 的大小取决于当前任务中所有可能的结果，并且与 FN 反映与奖励相关的神经活动的观点一致。
The feedback negativity (FN) has been shown to reflect the binary evaluation of possible outcomes in a context-dependent manner, but it is unclear whether context-dependence is based on global or local alternatives. A cued gambling task was used to examine whether the FN is sensitive to possible outcomes on a given trial, or the range of outcomes across trials. On 50% of trials, participants could break even or lose money; on remaining trials, participants could win or break even. Breaking even was an unfavorable outcome relative to all possibilities in the current task, but the best possible outcome on 50% of trials. Results indicated that breaking even elicited an FN in both contexts, and reward feedback was uniquely associated with an enhanced positivity. Results suggest that the magnitude of the FN depends on all possible outcomes within the current task and are consistent with the view that the FN reflects reward-related neural activity.
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