Sneary Michael G, Lewis Edwin R
Department of Biological Sciences, San Jose State University, San Jose, CA 95192-0100, USA.
Hear Res. 2007 Jun;228(1-2):22-30. doi: 10.1016/j.heares.2006.12.014. Epub 2007 Jan 20.
Second-order reverse correlation (second-order Wiener-kernel analysis) was carried out between spike responses in single afferent units from the basilar papilla of the red-eared turtle and band limited white noise auditory stimuli. For units with best excitatory frequencies (BEFs) below approximately 500 Hz, the analysis revealed suppression similar to that observed previously in anuran amphibians. For units with higher BEFs, the analysis revealed dc response with narrow-band tuning centered about the BEF, combined with broad-band ac response at lower frequencies. For all units, the analysis revealed the relative timing and tuning of excitation and various forms of inhibitory or suppressive effects.
对红耳龟基底乳头单个传入单位的尖峰反应与带限白噪声听觉刺激进行了二阶反向相关分析（二阶维纳核分析）。对于最佳兴奋频率（BEF）低于约500Hz的单位，分析显示出与先前在无尾两栖动物中观察到的抑制作用相似的抑制现象。对于BEF较高的单位，分析显示出以BEF为中心的具有窄带调谐的直流反应，以及在较低频率下的宽带交流反应。对于所有单位，分析揭示了兴奋以及各种形式的抑制或抑制作用的相对时间和调谐情况。
