Fast sensory-motor reactions in echolocating bats to sudden changes during the final buzz and prey intercept
Fast sensory-motor reactions in echolocating bats to sudden changes during the final buzz and prey intercept
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DOI：
10.1073/pnas.1424457112
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发表时间：
2015-03-31
影响因子：
11.1
通讯作者：
Surlykke, Annemarie
中科院分区：
文献类型：
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作者：
Geberl, Cornelia;Brinklov, Signe;Surlykke, Annemarie
回声定位是一种活跃的感觉，使蝙蝠和齿鲸在黑暗中通过超声波信号的回声来定位。在捕获猎物之前，蝙蝠和鲸鱼都会发出嗡嗡声，其发射率非常高（>= 180赫兹），持续时间非常短，以至于它的功能意义仍然是一个谜。为了研究食虫蝙蝠（Myotis daubentonii）发出嗡嗡声时的感觉-运动控制，我们在预期捕获之前将猎物悬吊在空中或水中。蝙蝠的反应是逐渐缩短它们的回声定位嗡嗡声；早期的猎物在预计捕获前大约100毫秒（30厘米）被移走，之后在空气和水面上发出完整的嗡嗡声序列。在水面上拖网飞行的蝙蝠也会进行完整的捕捉动作，但在空中的捕捉动作被中止，即使在很晚的时候也会移除猎物。
Echolocation is an active sense enabling bats and toothed whales to orient in darkness through echo returns from their ultrasonic signals. Immediately before prey capture, both bats and whales emit a buzz with such high emission rates (>= 180 Hz) and overall duration so short that its functional significance remains an enigma. To investigate sensory-motor control during the buzz of the insectivorous bat Myotis daubentonii, we removed prey, suspended in air or on water, before expected capture. The bats responded by shortening their echolocation buzz gradually; the earlier prey was removed down to approximately 100 ms (30 cm) before expected capture, after which the full buzz sequence was emitted both in air and over water. Bats trawling over water also performed the full capture behavior, but in-air capture motions were aborted, even at very late prey removals (