Precise Doppler shift compensation in the hipposiderid bat, Hipposideros armiger.
Precise Doppler shift compensation in the hipposiderid bat, Hipposideros armiger.
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DOI：
10.1038/s41598-018-22880-y
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发表时间：
2018-03-15
影响因子：
4.6
通讯作者：
Denzinger A
中科院分区：
文献类型：
--
作者：
Schoeppler D;Schnitzler HU;Denzinger A
菊头蝠科和蹄蝠科的蝙蝠，以及Pteronotus parnellii，补偿它们自己飞行运动产生的多普勒频移。它们调整自己的叫声频率，使来自前方的回声频率落在听觉系统的一个专门频率范围内，即听觉中央凹，以评估扑动猎物回声的幅度和频率调制。一些对蹄类动物的研究表明，多普勒频移补偿不太复杂或不完整。为了研究多普勒频移补偿的准确性，我们记录了蝙蝠飞行到网格的回声定位和飞行行为，重建飞行路径，测量飞行速度，计算回波频率，并将其与每次飞行前的静息频率进行比较。在每次飞行中，平均回波频率保持恒定，标准偏差为110 Hz，与飞行速度无关。静止和参考频率与80 Hz的偏移相结合;然而，它们在飞行之间略有变化。多普勒频移补偿的精度和偏移量与菊头蝠科和P. parnellii相似。所描述的频率变化可以解释为什么它已被假定为在蹄类动物的多普勒频移补偿是不完整的。
Bats of the Rhinolophidae and Hipposideridae families, and Pteronotus parnellii, compensate for Doppler shifts generated by their own flight movement. They adjust their call frequency such that the frequency of echoes coming from ahead fall in a specialized frequency range of the hearing system, the auditory fovea, to evaluate amplitude and frequency modulations in echoes from fluttering prey. Some studies in hipposiderids have suggested a less sophisticated or incomplete Doppler shift compensation. To investigate the precision of Doppler shift compensation in Hipposideros armiger, we recorded the echolocation and flight behaviour of bats flying to a grid, reconstructed the flight path, measured the flight speed, calculated the echo frequency, and compared it with the resting frequency prior to each flight. Within each flight, the average echo frequency was kept constant with a standard deviation of 110 Hz, independent of the flight speed. The resting and reference frequency were coupled with an offset of 80 Hz; however, they varied slightly from flight to flight. The precision of Doppler shift compensation and the offset were similar to that seen in Rhinolophidae and P. parnellii. The described frequency variations may explain why it has been assumed that Doppler shift compensation in hipposiderids is incomplete.
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影响因子：
4
作者：
Denzinger A;Schnitzler HU
通讯作者：
Schnitzler HU
影响因子：
--
作者：
HENSON, MM
通讯作者：
HENSON, MM
影响因子：
2.7
作者：
HELLER, KG;VONHELVERSEN, O
通讯作者：
VONHELVERSEN, O
DOI：
10.1007/978-1-4939-3527-7_9
发表时间：
2016-01-01
期刊：
BAT BIOACOUSTICS: WITH 62 ILLUSTRATIONS
影响因子：
--
作者：
Hiryu, Shizuko;Mora, Emanuel C.;Riquimaroux, Hiroshi
通讯作者：
Riquimaroux, Hiroshi
影响因子：
2.3
作者：
GOLDMAN, LJ;HENSON, OW
通讯作者：
HENSON, OW