Neural bases of an auditory illusion and its elimination in owls

Neural bases of an auditory illusion and its elimination in owls
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猫头鹰听觉错觉的神经基础及其消除

DOI:
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发表时间:
1999
影响因子:
25
通讯作者:
M. Konishi
M. Konishi
中科院分区:
医学1区
文献类型:
--
作者:
K. Saberi;Yoshifumi Takahashi;Haleh Farahbod;M. Konishi

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人类和猫头鹰通过检测耳朵之间的到达时间差异来定位声音。这两个物种都通过寻找使领先信号与滞后信号相匹配所需的延迟来确定耳间时间差。这种方法会对周期信号产生模糊,因为两个信号可以通过延迟其中一个来匹配。正如预测的那样,猫头鹰将周期性信号定位在虚幻的方向上,而当信号带宽超过一定值时,它们总是感知到真实的源。这种带宽也使高阶听觉神经元能够区分真实的和虚幻的来源。
Humans and owls localize sounds by detecting the arrival time disparity between the ears. Both species determine the interaural time difference by finding the delay necessary to match the leading signal with the lagging one. This method produces ambiguity with periodic signals, because the two signals can be matched by delaying either one or the other. As predicted, owls localized periodic signals in illusory directions, whereas they always perceived the real source when signal bandwidth exceeded a certain value. This bandwidth also enabled higher-order auditory neurons to discriminate between real and illusory sources.
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