Active listening for spatial orientation in a complex auditory scene.
Active listening for spatial orientation in a complex auditory scene.
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DOI：
10.1371/journal.pbio.0040079
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发表时间：
2006-04
期刊：
影响因子：
9.8
通讯作者：
Surlykke A
中科院分区：
文献类型：
--
作者：
Moss CF;Bohn K;Gilkenson H;Surlykke A
为了成功地适应复杂的环境，动物必须控制运动行为的时机，并与动态的感觉信息相协调。在这里，我们报告了回声定位蝙蝠在接近背景植被时捕捉被拴住的昆虫时，对发声运动行为的自适应时间控制。蝙蝠的声纳发声录音与高速视频图像同步，这些图像被用来重建蝙蝠的三维飞行路线以及目标和植被的位置。当蝙蝠遇到在距离植被10-20厘米的地方捕捉昆虫的困难任务时，它的行为与开放环境下的行为有了很大的变化。它的成功率下降了约50%，启动拦截的时间增加了10倍，其高重复频率的“终端嗡嗡”持续时间减少了3倍。在所有条件下，蝙蝠都会产生显著的声纳“频闪群”，即间隔稳定的回声定位脉冲群。在捕捉昆虫的最后阶段，当昆虫被放置在杂乱的地方时，蝙蝠产生频闪群的几率更高。频闪群出现在翼拍(和推断的呼吸)周期的所有阶段，挑战了回声定位蝙蝠呼吸和声音产生严格同步的假说。这项研究的结果清楚地证明了时间上的发声-运动控制直接影响用于感知的信号。与高速视频图像同步的声纳发声记录揭示了回声定位蝙蝠在不同植被中捕捉昆虫时发声运动行为的适应性变化。
To successfully negotiate a complex environment, an animal must control the timing of motor behaviors in coordination with dynamic sensory information. Here, we report on adaptive temporal control of vocal–motor behavior in an echolocating bat, Eptesicus fuscus, as it captured tethered insects close to background vegetation. Recordings of the bat's sonar vocalizations were synchronized with high-speed video images that were used to reconstruct the bat's three-dimensional flight path and the positions of target and vegetation. When the bat encountered the difficult task of taking insects as close as 10–20 cm from the vegetation, its behavior changed significantly from that under open room conditions. Its success rate decreased by about 50%, its time to initiate interception increased by a factor of ten, and its high repetition rate “terminal buzz” decreased in duration by a factor of three. Under all conditions, the bat produced prominent sonar “strobe groups,” clusters of echolocation pulses with stable intervals. In the final stages of insect capture, the bat produced strobe groups at a higher incidence when the insect was positioned near clutter. Strobe groups occurred at all phases of the wingbeat (and inferred respiration) cycle, challenging the hypothesis of strict synchronization between respiration and sound production in echolocating bats. The results of this study provide a clear demonstration of temporal vocal–motor control that directly impacts the signals used for perception. Recordings of sonar vocalizations synchronized to high speed video images reveal adaptive changes in vocal-motor behavior of echolocating bats as they catch insects in varying vegetation.
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DOI：
10.1073/pnas.0308470101
发表时间：
2004-08-17
影响因子：
11.1
作者：
Ganguly, K;Kleinfeld, D
通讯作者：
Kleinfeld, D
影响因子：
56.9
作者：
ONEILL, WE;SUGA, N
通讯作者：
SUGA, N
影响因子：
56.9
作者：
SIMMONS, JA;FENTON, MB;OFARRELL, MJ
通讯作者：
OFARRELL, MJ
影响因子：
16.2
作者：
Mazer, JA;Gallant, JL
通讯作者：
Gallant, JL
影响因子：
10.1
作者：
Olson, DM;Dinerstein, E;Kassem, KR
通讯作者：
Kassem, KR