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Tolerance to repeated rewarding electrical stimulation of the insular cortex

机译：耐受岛状皮层的反复奖励电刺激

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摘要

The insular cortex (IC) has been related to various reinforcing behavioral processes. This study examined the effect of electrical stimulation of the posterior agranular IC on concurrent place preferences. Two groups of animals and their respective controls underwent rewarding brain stimulation every day or on alternate days. While the rats stimulated every other day maintained their preference for the place associated with brain stimulation, those stimulated every day evidenced a reduction in their place preference, suggesting tolerance to the stimulation's rewarding effect. A 15% increase in the current intensity produced a recovery of the preferences of the daily-stimulated rats but had no effect on those stimulated on alternate days. These results are discussed in terms of the rewarding effects induced by different electrical and chemical rewarding agents. (C) 2015 Elsevier B.V. All rights reserved.
机译：岛皮层（IC）与各种强化行为过程有关。这项研究检查了后颗粒状IC的电刺激对并发位置偏好的影响。每天或隔天对两组动物及其相应的对照进行有益的脑刺激。每隔一天刺激的大鼠保持对大脑刺激相关位置的偏好，而每天刺激的大鼠证明其位置偏好降低，表明对刺激的奖励作用具有耐受性。电流强度增加15％可使日常刺激的大鼠恢复其偏好，但对隔日刺激的大鼠没有影响。根据不同的电气和化学奖励剂引起的奖励效果讨论了这些结果。 （C）2015 Elsevier B.V.保留所有权利。

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