DISCRIMINATION OF SURFACE-STRUCTURED TARGETS BY THE ECHOLOCATING BAT MYOTIS-MYOTIS DURING FLIGHT
DISCRIMINATION OF SURFACE-STRUCTURED TARGETS BY THE ECHOLOCATING BAT MYOTIS-MYOTIS DURING FLIGHT
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DOI：
10.1007/bf00611192
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发表时间：
1983-01-01
期刊：
影响因子：
--
通讯作者：
VOGLER, B
中科院分区：
文献类型：
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作者：
HABERSETZER, J;VOGLER, B
M.训练鼠耳蝠以区分具有8mm深孔的板和具有逐步变化的孔深度的板。回声定位蝙蝠区分两个板的深度差异等于或大于1 mm。在第二系列实验中，将具有4 mm深孔的接骨板与孔深差等于或大于0.8 mm的其他接骨板区分开（图3）。在辨别过程中发出的回声定位声音与在空中或地面上捕捉猎物时发出的声音是同一类型的。随着辨别任务难度的增加，蝙蝠的飞行速度降低。偶然的实验揭示了用表面中30 μ m突起产生的粗糙度分辨率区分表面结构的能力。M.鼠耳蝠通过回声中的频谱线索而不是时间线索来区分孔深度差异。
M. myotis was trained to discriminate a plate with 8 mm deep holes from plates of stepwise varied hole depth. Depth differences in the 2 plates equal or larger than 1 mm were discriminated by the echolocating bat. In a 2nd series of experiments a plate with 4 mm deep holes are discriminated from other plates with hole depth differences equal or larger than 0.8 mm (Fig. 3). Echolocation sounds emitted during discrimination are of the same type as those used for catching prey in air or on the ground. With increasing difficulty of the discrimination task the flight speed of the bat was reduced. An incidental experiment disclosed the ability to discriminate surface structures with the resolution of roughness produced by 30 .mu.m protrusions in the surface. M. myotis discriminated hole depth differences by spectral, and not by time, cues in the echoes.