SPECTRO-TEMPORAL CHARACTERIZATION OF AUDITORY NEURONS - REDUNDANT OR NECESSARY
SPECTRO-TEMPORAL CHARACTERIZATION OF AUDITORY NEURONS - REDUNDANT OR NECESSARY
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DOI：
10.1016/0378-5955(81)90030-7
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发表时间：
1981-01-01
期刊：
影响因子：
2.8
通讯作者：
JOHANNESMA, PIM
中科院分区：
文献类型：
--
作者：
EGGERMONT, JJ;AERTSEN, AMHJ;JOHANNESMA, PIM
对于神经元的听觉中脑的草蛙的使用相结合的频谱-时间特性进行了评估，对频率敏感性和时间响应特性的单独表征。通过将尖峰之前的刺激强度的联合密度函数I（f，t）分解为2个边缘密度函数I1（f）和I2（t），可以在统计独立性的假设下通过相乘来重建联合密度：I2（t）。对于83个神经元，将重建的cxa.I（f，t）与原始I（f，t）进行比较：其中23%的cxa.I（f，t）似乎与I（f，t）有很大不同。这些单位似乎主要位于听觉中脑的腹侧部分，并有超过30毫秒的潜伏期。在动作电位波形的基础上，不可分离的I（f，t）传入的神经纤维人口的情况下得出结论。听觉神经元的频谱-时间特性似乎是听觉中脑和中央的调查所必需的。
For neurons in the auditory midbrain of the grass frog the use of a combined spectro-temporal characterization was evaluated against the separate characterizations of frequency-sensitivity and temporal response properties. By factoring the joint density function of stimulus intensity, I(f, t), preceding a spike, into 2 marginal density functions I1(f) and I2(t) one may under the assumption of statistical independence reconstruct the joint density by multiplication: I1(f) .cntdot. I2(t). The reconstructed .cxa.I(f, t) is compared to the original I(f, t) for 83 neurons: in 23% thereof the .cxa.I(f, t) appeared to be vastly different from I(f, t). These units appeared to be located dominantly in the ventral parts of the auditory midbrain and had a latency exceeding 30 ms. On the basis of the action-potential wave forms, the absence of non-separable I(f, t) in the incoming nerve fiber population is concluded. A spectro-temporal characterization of auditory neurons seems mandatory for investigations in and central from the auditory midbrain.