van Dijk P, Lewis E R, Wit H P
Institute of Audiology, University Hospital, Groningen, The Netherlands.
Hear Res. 1990 Mar;44(2-3):231-40. doi: 10.1016/0378-5955(90)90083-2.
Single fiber recordings were made from auditory nerve fibers of the American bullfrog (Rana catesbeiana). As temperature was raised: (1) Best frequencies of fibers from the amphibian papilla (N = 15) increased. Below 600 Hz best frequency changes up to 0.06 oct/degrees C were found; above 600 Hz changes were less than 0.03 oct/degrees C. In the basilar papilla (N = 4) no significant increase of best frequency was found. (2) Spike rates in response to fixed-RMS-amplitude stimuli increased considerably: Q10 of spike rate ranged from 5 to 10. (3) Spontaneous activity, found in basilar papilla fibers, increased with average Q10 = 1.6 (+/- 0.3). (4) A conspicuous change of tuning quality factor Q10 dB was only observed in two fibers, that were taken to low temperatures (less than 16 degrees C). (5) the nearly linear frequency vs. phase relation in amphibian papilla shifts to higher frequency (along with shift of best frequency), while its average slope remains nearly unchanged.
对美国牛蛙（牛蛙）的听神经纤维进行了单纤维记录。随着温度升高：（1）来自两栖乳头（N = 15）的纤维的最佳频率增加。在600 Hz以下，发现最佳频率变化高达0.06倍频程/摄氏度；在600 Hz以上，变化小于0.03倍频程/摄氏度。在基底乳头（N = 4）中，未发现最佳频率有显著增加。（2）对固定均方根幅度刺激的放电率显著增加：放电率的Q10范围为5至10。（3）在基底乳头纤维中发现的自发活动增加，平均Q10 = 1.6（±0.3）。（4）仅在两根纤维中观察到调谐品质因数Q10 dB的明显变化，这两根纤维被置于低温（低于16摄氏度）下。（5）两栖乳头中频率与相位的近似线性关系向更高频率移动（随着最佳频率的移动），而其平均斜率几乎保持不变。
