Wetzel W, Ohl F W, Wagner T, Scheich H
Leibniz Institute for Neurobiology, Magdeburg, Germany.
Neurosci Lett. 1998 Aug 14;252(2):115-8. doi: 10.1016/s0304-3940(98)00561-8.
Mongolian gerbils (Meriones unguiculatus) were trained in a shuttle box to discriminate the direction in frequency-modulated tones (FM). Whereas control animals easily acquired FM discrimination, animals with auditory cortex lesion on the right side showed considerable difficulties in learning this task. The discrimination performance of gerbils with left auditory cortex lesion, however, was not different from controls. This study, suggesting that the right auditory cortex plays a dominant role in FM discrimination learning in gerbils, describes a useful animal model for investigation of the basic mechanisms underlying hemispheric asymmetries in auditory perception.
蒙古沙鼠（长爪沙鼠）在穿梭箱中接受训练，以辨别调频音（FM）的方向。对照组动物能够轻松学会调频辨别，而右侧听觉皮层受损的动物在学习这项任务时遇到了很大困难。然而，左侧听觉皮层受损的沙鼠的辨别能力与对照组没有差异。这项研究表明，右侧听觉皮层在沙鼠的调频辨别学习中起主导作用，它描述了一种用于研究听觉感知中半球不对称基本机制的有用动物模型。
