Modlinska Klaudia, Stryjek Rafał, Chrzanowska Anna, Pisula Wojciech
Institute of Psychology, Polish Academy of Sciences, 1 Jaracza St., Warsaw, Poland.
Institute of Psychology, Polish Academy of Sciences, 1 Jaracza St., Warsaw, Poland.
Behav Processes. 2018 Aug;153:77-83. doi: 10.1016/j.beproc.2018.05.010. Epub 2018 May 17.
Stress associated with social isolation in early life can lead to disturbances in the emotional regulation in adult rats. However, there are no reports on the impact of isolation from the mother while providing contact with peers. Under such conditions, young individuals have the opportunity to interact with others, are able to develop social behaviour, etc. Yet, there is no stimulation and care provided by the mother. We examined the relative impact of maternal contact and sibling contact in the rarely studied pre-juvenile (3rd and 4th week post birth) period on subsequent development. An experiment was designed to compare the impact of different social environments on the animals' behaviour in adulthood. There were three breeding conditions: young with mother, young with peers, and standard breeding conditions. Adult rats were subjected to a T-Maze test to measure the level of exploratory behaviour. Spatial learning was assessed by placing water bottles in the side corridors. The analysis revealed that a distorted environment during the development process has a negative impact on the rats' emotional regulation and a subtle effect on related aspects of adaptive behaviours (i.e. exploration). In the pre-juvenile period, to some degree, contact with peers may be complementary to the mother's influence.
早期生活中与社会隔离相关的压力会导致成年大鼠情绪调节紊乱。然而，关于在与同伴接触的同时与母亲分离的影响尚无报道。在这种情况下，幼体有机会与他人互动，能够发展社交行为等。然而，母亲没有给予刺激和照料。我们研究了在很少被研究的幼年前期（出生后第3和第4周），母亲接触和兄弟姐妹接触对后续发育的相对影响。设计了一项实验来比较不同社会环境对动物成年后行为的影响。有三种饲养条件：与母亲在一起的幼体、与同伴在一起的幼体以及标准饲养条件。成年大鼠接受T迷宫测试以测量探索行为水平。通过在侧通道放置水瓶来评估空间学习能力。分析表明，发育过程中的扭曲环境对大鼠的情绪调节有负面影响，对适应性行为的相关方面（即探索）有微妙影响。在幼年前期，与同伴的接触在一定程度上可能对母亲的影响起到补充作用。
