Gönder A
Int J Neurosci. 1982 May;16(3-4):173-88. doi: 10.3109/00207458209147144.
The previous report on the dynamics of spontaneous and evoked activities of the substructures within the cat inferior colliculus (IC) has been extended in order further to demonstrate the high frequency resonance phenomena in the IC. Steady-state evoked potentials, which were recorded by repetitive acoustical stimulation, proved the fact that high frequency oscillatory components of the evoked potentials (EPs) resulted from a real resonance phenomenon. The changes in the electrical activities following local lesions further helped us to decide that the high frequency oscillatory components of the EPs reflected unique activity of a neural net of spatially confined populations. By quantifying two parameters, namely the primary peak seen in the cross-covariance functions and the degree of synchronization as measured from the cross-power spectra of two simultaneously recorded spontaneous activity from a localized neural net in the IC, it was possible to show some dynamic patterns as associated with the spontaneous activity of the net. The behavior of these measured parameters as a function of external inputs exhibited a hysteresis which is of interest in the theory of short-term memory. Some interpretations of the high frequency resonance activities in terms of neuroanatomic structure of the IC were also made briefly.
先前关于猫下丘（IC）内各亚结构自发活动和诱发活动动态的报告得到了扩展，以便进一步证明下丘中的高频共振现象。通过重复声学刺激记录的稳态诱发电位证明了诱发电位（EPs）的高频振荡成分源自真实的共振现象这一事实。局部损伤后电活动的变化进一步帮助我们确定，诱发电位的高频振荡成分反映了空间受限神经元群神经网络的独特活动。通过量化两个参数，即在互协方差函数中看到的主峰以及从IC中局部神经网络同时记录的两个自发活动的互功率谱测量的同步程度，可以显示出一些与该网络自发活动相关的动态模式。这些测量参数作为外部输入的函数的行为表现出滞后现象，这在短期记忆理论中很有趣。还简要地根据下丘的神经解剖结构对高频共振活动进行了一些解释。
