An acoustic startle-based method of assessing frequency discrimination in mice.

An acoustic startle-based method of assessing frequency discrimination in mice.
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DOI:
10.1016/j.jneumeth.2011.05.027
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发表时间:
2011-08-30
影响因子:
3
通讯作者:
Kandler, Karl
Kandler, Karl
中科院分区:
医学4区
文献类型:
--
作者:
Clause, Amanda;Tuan Nguyen;Kandler, Karl

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声惊吓反应(ASR)是骨骼肌对响亮、突然的声刺激的反射性收缩。如果惊吓刺激之前有较弱的声学或非声学刺激,则ASR幅度会降低,这种现象称为前脉冲抑制(PPI)。PPI已被用于测试动物和人类感觉辨别的各个方面。在这里,我们表明,PPI的ASR是一个有利的方法,评估频率歧视。我们描述了该装置和它的性能测试年轻的CD 1小鼠的频率辨别。与经典的条件反射范式相比,ASR的PPI耗时更少,产生稳健的结果,并且即使在年幼的动物中也可以在没有训练的情况下使用。这种方法可以用来调查神经元的机制,频率歧视,其成熟过程中的发展,以及它的关系tonotopic组织。
The acoustic startle response (ASR) is a reflexive contraction of skeletal muscles in response to a loud, abrupt acoustic stimulus. ASR magnitude is reduced if the startle stimulus is preceded by a weaker acoustic or non-acoustic stimulus, a phenomenon known as prepulse inhibition (PPI). PPI has been used to test various aspects of sensory discrimination in both animals and humans. Here we show that PPI of the ASR is an advantageous method of assessing frequency discrimination. We describe the apparatus and its performance testing frequency discrimination in young CD1 mice. Compared to classical conditioning paradigms, PPI of the ASR is less time consuming, produces robust results, and can be used without training even in young animals. This approach can be used to investigate the neuronal mechanisms underlying frequency discrimination, its maturation during development, and its relationship to tonotopic organization.
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