New advances in understanding decisions among multiple alternatives.
New advances in understanding decisions among multiple alternatives.
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DOI：
10.1016/j.conb.2012.04.009
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发表时间：
2012-12
影响因子：
5.7
通讯作者：
Ditterich J
中科院分区：
文献类型：
--
作者：
Churchland AK;Ditterich J
决策的实验研究非常强调在两种选择之间做出选择。然而，现实生活中的决策往往涉及多种选择。本文提供了一个概述的理论框架，已提出的行为数据，从经济和感性的多选择决策。我们进一步回顾了最近收集的神经生理学数据与决策行为。这些神经记录为决策机制的假定模型提供了约束。例如，抑制的时间过程提供了对替代品之间的竞争是如何介导的洞察。此外，尽管与决策相关的神经活动似乎在决策期结束时达到一个共同的阈值，但起点往往系统地依赖于备选方案的数量。我们讨论了候选机制，可以驱动减少射击率的决定之间的多个替代品。
Experimental studies of decision-making have put a strong emphasis on choices between two alternatives. However, real-life decisions often involve multiple alternatives. This article provides an overview of theoretical frameworks that have been proposed to account for behavioral data from both economic and perceptual multi-alternative decision-making. We further review recent neurophysiological data collected in conjunction with decision-making behavior. These neural recordings provide constraints on putative models of the decision mechanism. For example, the time course of inhibition provides insight into how the competition between alternatives is mediated. Furthermore, whereas decision-related neural activity seems to reach a common threshold at the end of the decision period, the starting point tends to depend systematically on the number of alternatives. We discuss candidate mechanisms that could drive the reduction in firing rates on decisions among multiple alternatives.
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影响因子：
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