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首页> 外文期刊>Behavioral neuroscience >CS-US preexposure effects on trace eyeblink conditioning in young rats: Potential implications for functional brain development
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CS-US preexposure effects on trace eyeblink conditioning in young rats: Potential implications for functional brain development

机译:CS-US暴露前对幼鼠微量眨眼条件的影响:对功能性大脑发育的潜在影响

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摘要

Recent studies of delay eyeblink conditioning (EBC) in young rats have demonstrated different effects of various conditioned and unconditioned stimulus (CS-US) preexposure conditions on learning at different ages. The present study extends this research to trace EBC. Subjects experienced 1 of 3 preexposure conditions (paired CS-US, Impaired CS-US, or no stimuli) at either 20 or 24 days of age. Four days later, they were conditioned using either trace (Experiment 1) or delay (Experiment 2) EBC parameters. Results were similar at both ages tested. Paired preexposure facilitated acquisition of delay but not trace relative to context preexposure. Unpaired preexposure impaired acquisition of both delay and trace. These behavioral findings provide a foundation for hypotheses about the functional maturation of cerebellar, hippocampal, and entorhinal learning circuits.
机译:幼鼠延迟眨眼调节(EBC)的最新研究表明,各种条件和非调节刺激(CS-US)预暴露条件对不同年龄的学习有不同的影响。本研究将这项研究扩展到追溯EBC。受试者在20或24天时经历了3种暴露前状态中的1种(配对CS-US,CS-US受损或没有刺激)。四天后,使用示踪(实验1)或延迟(实验2)EBC参数对其进行调节。在两个年龄的测试结果都相似。配对的预曝光有助于延迟的获取,但相对于上下文预曝光则无法跟踪。未配对的预曝光会影响延迟和跟踪的采集。这些行为发现为有关小脑,海马和内嗅学习回路功能成熟的假设提供了基础。

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