Sound transmission and directional hearing in field crickets: neurophysiological studies outdoors.
Sound transmission and directional hearing in field crickets: neurophysiological studies outdoors.
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DOI：
10.1007/s00359-010-0557-x
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发表时间：
2010-09
影响因子：
2.1
通讯作者：
Romer, Heiner
中科院分区：
文献类型：
--
作者：
Kostarakos, Konstantinos;Romer, Heiner
许多研究提供了有关蟋蟀在理想声学条件下定位声源的能力的详细行为和神经生理学信息，但对它们在真实栖息地的表现知之甚少。我们使用神经生理学方法，通过同时记录蟋蟀栖息地中两个显著的、两侧同源的AN1神经元的活动，来研究蟋蟀在野外的定向听力。这对神经元对不同距离和不同方向出现的同种啁啾的反应的放电和潜伏期差异被作为方向信息的衡量标准。最大听力距离因个体和天气条件的不同而不同，范围为1~15m，平均为9.2m。虽然AN1活性一般随着距离的增加而降低，但反应的幅度随着距离的增加而出现较大的波动，表明距离上的强度梯度往往是不规则的。两个神经元的放电差异所提供的方向信息也随着距离的不同而变化。同样，传输通道上没有简单的方向梯度；相反，随着到震源距离的减小，存在提供阈值以上响应的接收器位置，但没有方向信息。讨论了对野外蟋蟀在地面附近进行声学交流的能力的影响。
Many studies provide detailed behavioural and neurophysiological information on the ability of crickets to localize a sound source under ideal acoustic conditions, but very little is known about how they perform in real habitats. We investigated directional hearing of crickets in the field using a neurophysiological approach, by recording the activity of the two prominent, bilaterally homologous AN1 neurons simultaneously in a cricket’s habitat. The discharge and latency differences of the pair of neurons in response to conspecific chirps presented at different distances and directions were taken as a measure of directional information. The maximum hearing distance differed between individuals and weather conditions from 1 to 15 m (mean 9.2 m). Although the AN1 activity generally decreased with increasing distance, large fluctuations in the magnitude of responses occurred with distance, indicating that the intensity gradient over distance is often irregular. The directional information provided in the discharge differences of the two neurons also varied with distance. Again, there was no simple directional gradient on the transmission channel; rather, with decreasing distance to the source there were receiver locations providing suprathreshold responses, but no directional information. The consequences for the ability of field crickets to communicate acoustically close to the ground are discussed.
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DOI：
10.1007/bf00603821
发表时间：
1986-01-01
影响因子：
2.1
作者：
RHEINLAENDER, J;ROMER, H
通讯作者：
ROMER, H
影响因子：
2.5
作者：
Mhatre, Natasha;Balakrishnan, Rohini
通讯作者：
Balakrishnan, Rohini
影响因子：
3.7
作者：
Kostarakos K;Hartbauer M;Römer H
通讯作者：
Römer H
影响因子：
2.9
作者：
MORTON, ES
通讯作者：
MORTON, ES
影响因子：
2.7
作者：
Lang, AB;Kalko, EKV;Dechmann, DKN
通讯作者：
Dechmann, DKN