Pigeons Consistently Prefer Easy Over Harder Access to Food: No Reversal After Direct Dopaminergic Stimulation
Pigeons Consistently Prefer Easy Over Harder Access to Food: No Reversal After Direct Dopaminergic Stimulation
复制标题
鸽子始终更喜欢容易获得食物而不是困难的食物：直接多巴胺能刺激后没有逆转
DOI：
10.1037/bne0000249
复制
发表时间：
2018
影响因子：
1.9
通讯作者：
Güntürkün
中科院分区：
文献类型：
--
作者：
Anselme;Dreher;Güntürkün
许多研究表明，动物可能更喜欢挣来的食物，而不是免费的食物，这种现象被称为“反吃白食”。在啮齿类动物中，多巴胺参与了激励动机和努力促进了这种偏好的发生。在这里，我们研究了普拉克索（PPX），多巴胺D2/3受体激动剂，对鸽子的逆自由负荷的行为影响。在实验1中，2组鸽子（PPX和SAL）同时暴露于一个碗，其中包含谷物只（容易的食物选项）和一个碗，其中包含谷物覆盖着锯末（较硬的食物选项）为6届会议。在两种处理条件下对它们进行了测试（高与低可用食物量）。在实验2中，两组鸽子首先重复呈现较硬的食物选项（训练阶段，6次），然后同时呈现两个选项（测试阶段，3次）。为了潜在地增加PPX的生理作用，剂量增加了两倍，并且在训练的第3次和第4次训练之间有2周的药物潜伏期。结果表明，两组鸽子都喜欢在容易的食物上觅食，PPX没有改变这种偏好。尽管有迹象表明PPX是有效的，但它的作用是减少而不是扩大更难的食物选择的吸引力。这表明，鸽子的积极性较低，部署觅食的努力比啮齿动物在类似的任务。（PsycInfo数据库记录（c）2020阿帕，保留所有权利）
Many studies show that animals may prefer earned over free food—a phenomenon referred to as “contrafreeloading.” In rodents, dopamine—which is involved in incentive motivation and effort—facilitates the occurrence of such a preference. Here, we investigated the behavioral effects of pramipexole (PPX), a dopamine D2/3 receptor agonist, on contrafreeloading in pigeons. In Experiment 1, 2 groups of pigeons (PPX and SAL) were simultaneously exposed to a bowl that contained grains only (easy food option) and a bowl that contained grains covered with sawdust (harder food option) for 6 sessions. They were tested in two treatment conditions (high vs. low amount of food available). In Experiment 2, the two groups of pigeons were first repeatedly presented with the harder food option (training phase, 6 sessions) and then with the two options at the same time (test phase, 3 sessions). In order to potentially increase the physiological effects of PPX, the dose was tripled, and there was a 2-week incubation of the drug between Sessions 3 and 4 at training. The results indicate that the pigeons from both groups preferred to forage on the easy food option, and PPX did not alter this preference. Despite indications that PPX was effective, its action consisted of reducing—rather than magnifying—the attractiveness of the harder food option. It is suggested that pigeons are less motivated to deploy foraging effort than rodents in similar tasks.(PsycInfo Database Record (c) 2020 APA, all rights reserved)
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在免费食物存在的情况下通过条件强化物控制反应
DOI：
--
发表时间：
1973
期刊：
影响因子：
--
作者：
L. A. Alferink;E. Crossman;C. Cheney
通讯作者：
C. Cheney
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影响因子：
2.9
作者：
C. Waldmann;Onur Gu¨ntu¨rku¨n
通讯作者：
Onur Gu¨ntu¨rku¨n
影响因子：
3.4
作者：
Schepisi, Chiara;De Carolis, Lorenza;Nencini, Paolo
通讯作者：
Nencini, Paolo
影响因子：
3.7
作者：
Herold C;Joshi I;Chehadi O;Hollmann M;Güntürkün O
通讯作者：
Güntürkün O
影响因子：
10.6
作者：
Day, Jeremy J.;Jones, Joshua L.;Wightman, R. Mark;Carelli, Regina M.
通讯作者：
Carelli, Regina M.