The Possible Encoding Strategy for Pulse Repetition Rate Processing in Inferior Collicular Neurons of CF-FM Bat, Hipposideros Armiger
The Possible Encoding Strategy for Pulse Repetition Rate Processing in Inferior Collicular Neurons of CF-FM Bat, Hipposideros Armiger
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DOI：
10.1109/iwcdm.2011.42
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发表时间：
2011-09
期刊：
影响因子：
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通讯作者：
Jia Tang;Z. Fu;Qiaozhen Qi;Qicai Chen
中科院分区：
文献类型：
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作者：
Jia Tang;Z. Fu;Qiaozhen Qi;Qicai Chen
研究了脉冲持续时间对恒频调频（CF-FM）蝙蝠下丘（IC）神经元脉冲重复率（PRR）加工的影响（Hipposideros armiger），使用30 ± 4、15 ± 3和5 ± 2 ms的CF-FM声音刺激。IC神经元分为4种类型：低通（LP）、带通（BP）、高通（HP）和非选择性神经元。并且这四种类型所占的比例随着声音持续时间的减少而变化。LP，BP和HP神经元可能会处理信息的回声的搜索，方法和捕捉阶段，分别在蝙蝠狩猎，而非选择性神经元没有选择性PRR。由于声音持续时间对PRR选择性的影响在不同的IC神经元中是有区别的，我们推测，一些神经元可能在目标接近序列的一个阶段处理其偏好的PRR，而另一些神经元可能会调整其跟随能力以匹配不断变化的声音信号持续时间。
The present study examined the effects of pulse duration on the pulse repetition rate (PRR) processing in inferior collicular (IC) neurons of constant frequency¨Cfrequency modulation (CF-FM) bat (Hipposideros armiger), using CF-FM sound stimuli of 30+4, 15+3, and 5+2 ms. IC neurons were classified into 4 types: low pass (LP), band pass (BP), high pass (HP), and non-selective neurons. And the proportions of these four types changed with the sound duration decreasing. The LP, BP, and HP neurons might process information from echoes of search, approach, and catch phases, respectively, during bats hunting, while the non-selective neurons had no selectivity to PRR. Because the effects of sound duration on PRR selectivity were distinguishing in different IC neurons, we speculated that some neurons were likely to process their preferred PRRs at one phase of target approaching sequence, while others could adjust their following abilities to match constantly changing duration of sound signals.