Dual process for intentional and reactive decisions.
Dual process for intentional and reactive decisions.
复制标题
DOI：
10.1371/journal.pcbi.1003013
复制
发表时间：
2013-04
影响因子：
4.3
通讯作者：
Mamassian P
中科院分区：
文献类型：
--
作者：
Devaine M;Waszak F;Mamassian P
有效的认知决策应该能够适应新信息的传入。然而，到目前为止，大多数决策模型都忽略了有意决策和刺激驱动决策之间潜在的相互作用。我们在这里报告了行为结果和一个关于感知决策和不可预测的新信息之间相互作用的新模型。我们要求参与者预测他们对外部刺激的反应，并以可变延迟呈现该刺激。如果新刺激足够早出现，参与者显然能够调整他们最初的决定以适应新刺激。为了解释这些结果，我们提出了一个两阶段模型，其中两个系统，一个有意的和一个刺激驱动的，只在第二阶段相互作用。在模型的第一阶段，有意识的和刺激驱动的过程独立竞争，以达到两个阶段之间的过渡阈值。该模型还可以解释第二个实验的结果，其中引入了响应偏差。我们的模型与一些生理学结果是一致的，这些结果表明，在有意和刺激驱动的信息之间，并行和交互处理都发生了。它强调在自然条件下，两种类型的处理都是重要的，它有助于确定并行处理和交互处理之间的过渡。我们研究的主题是有意和外部驱动的行为之间的相互作用。关于灵长类动物运动控制的当代文献清楚地区分了这两种类型动作的两种神经机制。我们认为这种区分是人为的，部分原因是不同的研究小组使用不同的方法研究了故意和外部驱动的行为。然而，在现实生活中，自愿计划的行为，如泡一杯茶，经常被其他响应外部世界的行为打断。在本研究中，我们专门研究了有意行为和外部驱动行为之间的相互作用。我们要求参与者预测他们对延迟出现的目标的反应。我们发现准备好的行动和目标触发的反应之间有很强的相互作用：当两种行动一致时，感知决策会更快。为了解释我们的行为结果，我们提出了一个基于两个阶段的计算模型，第一个阶段是外部和内部证据分别积累，第二个阶段是内部过程由外部驱动的过程调节。这个模型使我们能够确定，有意的和外部驱动的行为只在决策过程的一半中真正相互作用。
Efficient cognitive decisions should be adjustable to incoming novel information. However, most current models of decision making have so far neglected any potential interaction between intentional and stimulus-driven decisions. We report here behavioral results and a new model on the interaction between a perceptual decision and non-predictable novel information. We asked participants to anticipate their response to an external stimulus and presented this stimulus with variable delay. Participants were clearly able to adjust their initial decision to the new stimulus if this latter appeared sufficiently early. To account for these results, we present a two-stage model in which two systems, an intentional and a stimulus-driven, interact only in the second stage. In the first stage of the model, the intentional and stimulus-driven processes race independently to reach a transition threshold between the two stages. The model can also account for results of a second experiment where a response bias is introduced. Our model is consistent with some physiological results that indicate that both parallel and interactive processing take place between intentional and stimulus-driven information. It emphasizes that in natural conditions, both types of processing are important and it helps pinpoint the transition between parallel and interactive processing. The topic of our study is the interaction between intentional and externally-driven actions. The contemporary literature on motor control in primates clearly distinguishes two neural mechanisms for these two types of actions. We believe that this distinction is artefactual and comes in part from the fact that intentional and externally-driven actions have been studied by different groups of researchers, using different methodologies. In real life however, voluntary planned actions such as making a cup of tea are often interrupted by other actions in response to the outside world. In the present study, we specifically investigate the interaction between intentional and externally-driven actions. We asked participants to anticipate their response to the delayed appearance of a target. We find strong interactions between the prepared action and the target-triggered response: perceptual decisions are quicker when the two actions are congruent. To account for our behavioral results, we propose a computational model that is based on two stages, the first in which external and internal evidence accumulate separately, and the second in which internal processes are modulated by externally-driven ones. This model allows us to establish that intentional and externally-driven actions really interact only in half of the decision making process.
登录
查看更多内容
影响因子：
--
作者：
Pelli, DG
通讯作者：
Pelli, DG
影响因子：
5.7
作者：
Bode, Stefan;Bogler, Carsten;Haynes, John-Dylan
通讯作者：
Haynes, John-Dylan
影响因子：
2
作者：
Obhi, SS;Haggard, P
通讯作者：
Haggard, P
影响因子：
25
作者：
Stanford, Terrence R.;Shankar, Swetha;Massoglia, Dino P.;Costello, M. Gabriela;Salinas, Emilio
通讯作者：
Salinas, Emilio
影响因子：
2
作者：
Obhi, Sukhvinder S.;Matkovich, Shannon;Gilbert, Sam J.
通讯作者：
Gilbert, Sam J.