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首页> 外文期刊>Neuron >Human striatal responses to monetary reward depend on saliency.
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Human striatal responses to monetary reward depend on saliency.

机译：人类对金钱奖励的分层反应取决于显着性。

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摘要

While the striatum has been implicated in reward processing, an alternative view contends that the striatum processes salient events in general. Using fMRI, we investigated human striatal responses to monetary reward while modulating the saliency surrounding its receipt. Money was maximally salient when its receipt depended on a correct response (active) and minimally salient when its receipt was completely independent of the task (passive). The saliency manipulation was confirmed by skin conductance responses and subjective ratings of the stimuli. Significant caudate and nucleus accumbens activations occurred following the active compared to passive money. Such activations were attributed to saliency rather than the motor requirement associated with the active money because striatal activations were not observed when the money was replaced by inconsequential, nonrewarding stimuli. The present study provides evidence that the striatum's role in reward processing is dependent on the saliency associated with reward, rather than value or hedonic feelings.
机译：尽管纹状体已经牵涉到奖励处理中，但另一种观点认为纹状体通常处理显着事件。使用功能磁共振成像，我们调查了人类纹状体对金钱奖励的反应，同时调节了围绕其收益的显着性。当货币的收款依赖于正确的响应（主动）时，货币是最大显着的;而货币的收款完全独立于任务（被动）时，货币则是最小的显着性。通过皮肤电导反应和刺激的主观评定来确认显着性操纵。与被动货币相比，主动货币发生了显着的尾状和伏伏核激活。这样的激活归因于显着性而不是与活跃货币相关的运动要求，因为当货币被无关紧要的，无奖励的刺激所替代时，没有观察到纹状体激活。本研究提供证据，纹状体在奖励过程中的作用取决于与奖励相关的显着性，而不是价值或享乐感觉。

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