Changing value through cued approach: an automatic mechanism of behavior change.

Changing value through cued approach: an automatic mechanism of behavior change.
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DOI:
10.1038/nn.3673
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发表时间:
2014-04
影响因子:
25
通讯作者:
Poldrack, Russell A.
Poldrack, Russell A.
中科院分区:
医学1区
文献类型:
--
作者:
Schonberg, Tom;Bakkour, Akram;Hover, Ashleigh M.;Mumford, Jeanette A.;Nagar, Lakshya;Perez, Jacob;Poldrack, Russell A.

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人们相信选择行为揭示了商品的潜在价值。刺激的主观价值可以通过基于奖励的学习机制以及修改决策问题的描述来改变,但尚未证明可以通过扰乱单个项目的内在价值来操纵偏好。在这里,我们表明,食物的价值可以通过同时呈现不相关的听觉提示来调节,受试者必须对此做出简单的运动反应(即提示接近训练)。后续测试表明,这种配对对选择的影响在长期训练后至少持续两个月。选择过程中的眼球追踪证实,提示接近训练增加了对提示项目的注意力。神经影像学揭示了价值变化的神经特征,其形式是腹内侧前额叶皮层中偏好相关活动的放大。
It is believed that choice behavior reveals the underlying value of goods. The subjective values of stimuli can be changed through reward-based learning mechanisms as well as by modifying the description of the decision problem, but it has yet to be shown that preferences can be manipulated by perturbing intrinsic values of individual items. Here we show that the value of food items can be modulated by the concurrent presentation of an irrelevant auditory cue to which subjects must make a simple motor response (i.e. cue-approach training). Follow-up tests show that the effects of this pairing on choice lasted at least two months after prolonged training. Eye-tracking during choice confirmed that cue-approach training increased attention to the cued items. Neuroimaging revealed the neural signature of a value change in the form of amplified preference-related activity in ventromedial prefrontal cortex.
DOI: 10.1002/bs.3830090304
发表时间: 1964-01-01
期刊: BEHAVIORAL SCIENCE
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