Example of an adult rat sitting in the tickle arena. Photograph reproduced with the permission of Raffaela Lesch. Based on the Research Paper election on ultrasonic call rate in neonatal rats affects low frequency, but not ultrasonic, vocalizations in adults by R. Lesch, A. Orozco, M. Shilling, B. Zimmerberg and W.T. Fitch. https://doi.org/10.1111/eth.13075

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坐在挠痒痒的舞台上的成年大鼠的例子。图片经Raffaela Lesch许可复制。根据研究论文，R。Lesch， A。Orozco，M。Shilling，B。Zimmerberg和WT Fitch对新生大鼠的超声发声率的选择会影响成年人的低频发声，但不会影响超声发声。https://doi.org/10.1111/eth.13075