Role of dopamine D2 receptors in optimizing choice strategy in a dynamic and uncertain environment.

Role of dopamine D2 receptors in optimizing choice strategy in a dynamic and uncertain environment.
复制标题

在动态和不确定的环境中,多巴胺D2受体在优化选择策略中的作用。

DOI:
10.3389/fnbeh.2014.00368
复制
发表时间:
2014
影响因子:
3
通讯作者:
Jung MW
Jung MW
中科院分区:
医学3区
文献类型:
--
作者:
Kwak S;Huh N;Seo JS;Lee JE;Han PL;Jung MW

文献摘要

参考文献

被引文献

相似文献

为了研究多巴胺受体亚型在奖赏学习中的作用,我们研究了多巴胺D1和D2受体敲除小鼠(分别为D1 R-KO和D2 R-KO)在逆转频率逐渐增加的工具学习任务和动态双臂强盗任务中的选择行为。在前者中,D2 R-KO小鼠的表现随着逆转频率的增加而逐渐受损,在后者中,即使经过长时间的训练,D2 R-KO小鼠的表现也严重受损,而D1 R-KO小鼠表现出相对较小的表现缺陷。利用一个包含“赢-留-输-转换”和强化学习项的混合模型很好地解释了动态双臂强盗任务中的选择行为。基于模型的分析显示,增加了赢得停留,但受损的价值更新和减少D2 R-KO小鼠的价值依赖的行动选择,这是不利于最大化的奖励在动态双臂强盗任务。这些结果表明,多巴胺D2受体在学习过去的选择结果,在动态和不确定的环境中的选择行为的快速调整的重要作用。
In order to investigate roles of dopamine receptor subtypes in reward-based learning, we examined choice behavior of dopamine D1 and D2 receptor-knockout (D1R-KO and D2R-KO, respectively) mice in an instrumental learning task with progressively increasing reversal frequency and a dynamic two-armed bandit task. Performance of D2R-KO mice was progressively impaired in the former as the frequency of reversal increased and profoundly impaired in the latter even with prolonged training, whereas D1R-KO mice showed relatively minor performance deficits. Choice behavior in the dynamic two-armed bandit task was well explained by a hybrid model including win-stay-lose-switch and reinforcement learning terms. A model-based analysis revealed increased win-stay, but impaired value updating and decreased value-dependent action selection in D2R-KO mice, which were detrimental to maximizing rewards in the dynamic two-armed bandit task. These results suggest an important role of dopamine D2 receptors in learning from past choice outcomes for rapid adjustment of choice behavior in a dynamic and uncertain environment.
DOI: 10.1016/j.neuroscience.2009.04.052
发表时间: 2009-08-04
期刊: NEUROSCIENCE
影响因子: 3.3
作者:
Desteno, D. A.;Schmauss, C.
通讯作者: Schmauss, C.
DOI: 10.1038/nature09588
发表时间: 2011-01-06
期刊: Nature
影响因子: 64.8
作者:
Flagel SB;Clark JJ;Robinson TE;Mayo L;Czuj A;Willuhn I;Akers CA;Clinton SM;Phillips PE;Akil H
通讯作者: Akil H
DOI: 10.1523/jneurosci.0363-11.2011
发表时间: 2011-05-18
期刊: The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子: --
作者:
Groman SM;Lee B;London ED;Mandelkern MA;James AS;Feiler K;Rivera R;Dahlbom M;Sossi V;Vandervoort E;Jentsch JD
通讯作者: Jentsch JD
DOI: 10.1037/a0019504
发表时间: 2010-06-01
影响因子: 1.9
作者:
Herold, Christina
通讯作者: Herold, Christina
DOI: 10.1523/jneurosci.2489-13.2014
发表时间: 2014-01-15
影响因子: 5.3
作者:
Hart, Andrew S.;Rutledge, Robb B.;Phillips, Paul E. M.
通讯作者: Phillips, Paul E. M.