Can we understand how developmental stress enhances performance under future threat with the Yerkes-Dodson law?
Can we understand how developmental stress enhances performance under future threat with the Yerkes-Dodson law?
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DOI：
10.1080/19420889.2015.1029689
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发表时间：
2015-05-01
影响因子：
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通讯作者：
Braithwaite, Victoria A
中科院分区：
文献类型：
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作者：
Chaby, Lauren E;Sheriff, Michael J;Braithwaite, Victoria A
最近，我们发现，在青春期暴露于慢性压力的成年大鼠在高威胁条件下的觅食能力比没有压力的大鼠提高了43%。我们的研究结果表明，在青春期的压力可以准备大鼠在未来的威胁下，更好地发挥作用，这支持了假设描述的适应作用的长期后果的早期压力（如节俭表型和母亲不匹配的假设）。这些假设通常预测，早期的压力会损害以后生活中低威胁条件下的表现。然而，我们没有发现任何差异，在低威胁条件下的表现之间的压力和压力成年动物。为了理解为什么青春期的压力会影响高威胁条件下的表现，而不是低威胁条件下的表现，我们在耶基斯-多德森定律的框架下讨论了我们的发现，这是一个重要的心理学规则，已经被用于描述压力如何影响表现超过世纪。
Recently we have shown that adult rats exposed to chronic stress during adolescence increase foraging performance in high-threat conditions by 43% compared to rats reared without stress. Our findings suggest that stress during adolescence can prepare rats to better function under future threat, which supports hypotheses describing an adaptive role for the long-term consequences of early stress (e.g. the thrifty phenotype and maternal mismatch hypotheses). These hypotheses often predict that early stress will impair performance in low-threat conditions later in life. However, we did not find any difference in performance under low-threat conditions between adolescent-stressed and unstressed adult animals. To understand why stress during adolescence may affect performance in high-threat but not in low-threat conditions, we discuss our findings in the framework of the Yerkes-Dodson law, a key precept of psychology that has been used for over a century to describe how stress affects performance.