Christensen-Dalsgaard J, Jørgensen M B
Center for Sound Communication, Odense University, Denmark.
J Acoust Soc Am. 1996 Jul;100(1):451-7. doi: 10.1121/1.415872.
Sixty-seven fibers of a sample of 401 in the auditory nerve of grassfrogs (Rana temporaria) showed one-tone suppression, i.e., their spontaneous activity was suppressed by tones. All fibers were afferents from the amphibian papilla with best frequencies between 100 and 400 Hz. Best suppression frequencies ranged from 700 to 1200 Hz. Spontaneous activities for the fibers showing one-tone suppression ranged from 3 to 75 spikes/s. Spontaneous activities above 40 spikes/s and the phenomenon of one-tone suppression itself has not been reported previously for frogs. The population of fibers showing one-tone suppression comprises 81% of all fibers with best frequencies below 400 Hz and spontaneous activities higher than 3 spikes/s, indicating that the mechanism underlying the suppression is quite general.
在草蛙（林蛙）的听神经样本中，401根纤维里有67根表现出单音抑制，即它们的自发放电活动受到音调抑制。所有纤维均为来自两栖类乳头体的传入纤维，最佳频率在100至400赫兹之间。最佳抑制频率范围为700至1200赫兹。表现出单音抑制的纤维的自发放电活动范围为3至75个脉冲/秒。自发放电活动高于40个脉冲/秒以及单音抑制现象本身此前在青蛙中尚未有过报道。表现出单音抑制的纤维群体占所有最佳频率低于400赫兹且自发放电活动高于3个脉冲/秒的纤维的81%，这表明抑制背后的机制相当普遍。
