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首页> 外文期刊>The European Journal of Neuroscience >Effect of nucleus accumbens lesions on socially motivated behaviour of young domestic chicks
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Effect of nucleus accumbens lesions on socially motivated behaviour of young domestic chicks

机译：核心宫腔病变对年轻国内小鸡的社会动机行为的影响

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Abstract Behaviour of young domestic chicks when isolated from conspecifics is influenced by two conflicting drives: fear of potential predator and craving for company. The nucleus accumbens (Ac) has been suggested to influence social behaviour, as well as motivation in goaldirected tasks. In this study, the Ac of 1dayold domestic chicks was lesioned bilaterally, using radiofrequency method. Open field behaviour before and after presenting a silhouette of a bird of prey was recorded, followed by a behavioural test to measure group size preference and social motivation of chicks. Aclesioned individuals emitted more distress calls and ambulated more in the open field test, however, they reacted to the predatory stimulus very similarly to control chicks: their vocalization was reduced and the intergroup difference in motor activity also disappeared. There was no difference between the lesioned and control chicks in the latency to approach their conspecifics in the social motivation test, and both groups chose the larger flock (eight) of conspecifics over the smaller one (three). Concerning the role of Ac in social behaviour, a difference between lesioned and sham birds was evident here only in the absence of detectable stimulus (predator or conspecifics). These findings may reflect either decreased fear of exposure to predators or increased craving for conspecifics suggesting that the likely function of Ac is to modulate goaldriven, including socially driven, behaviours, especially when the direct stimulus representing the goal is absent. This is in harmony with the known promotion of impulsiveness by Ac lesions.
机译：摘要从消费者孤立时幼地产小鸡的行为受到两种冲突的驱动器的影响：担心潜在的捕食者和公司渴望。已经提出了核心宫（AC）影响社会行为，以及守门员中的动机。在这项研究中，使用射频法，1dayold家用雏鸡的AC损失了双侧。录制出现一只猎物鸟类之前和之后的开放现场行为，然后是行为测试来测量小鸡的群体大小偏好和社会动机。粉碎的个体在开放场测试中发出了更多的困难呼叫并管理更多，但是，它们对捕食性刺激反应非常类似于对照小鸡：减少了它们的发声，电机活动中的杂交差异也消失。在社会动机试验中潜入的潜伏和控制雏鸡没有差异，并且在社会动机测试中接近它们的尖锐物，并且两组在较小的（三个）上选择了较大的羊群（八）的消费物。关于AC在社会行为中的作用，在没有可检测的刺激（捕食者或CONSPECIFICS）的情况下，损伤和假鸟类之间的差异在这里是明显的。这些发现可能反映出对暴露于捕食者的恐惧，或增加对捕食者的渴望，表明AC的可能函数是调制Logive，包括社会驱动的行为，特别是当代表目标的直接刺激时。这与AC病变的已知促进冲动和谐相处。

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