DIRECTIONAL HEARING IN CRICKETS
DIRECTIONAL HEARING IN CRICKETS
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DOI：
10.1038/262390a0
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发表时间：
1976-01-01
期刊：
影响因子：
64.8
通讯作者：
BOYAN, GS
中科院分区：
文献类型：
--
作者：
HILL, KG;BOYAN, GS
蟋蟀在前胫骨的近端有听觉器官；双耳感觉输入使蟋蟀能够定向到声源，并且响应于声音，蟋蟀会转向受到更强烈刺激的两只耳朵1。空气传播的振动激活耳朵的听觉鼓膜，并传达到附着在腿部气管外表面的感觉蜈蚣，在鼓膜后面形成一个空气空间2,3。对于方向敏感的听力，当入射声音的方向与昆虫的身体轴线形成角度时，两只耳朵的响应应该不同。蟋蟀的定向听觉此前被认为是由于昆虫身体对对侧耳朵的屏蔽造成的。我们认为屏蔽不足以解释观察到的方向性，并提出了另一种理论来预测生理测量的板球听觉系统的方向敏感性。
CRICKETS have auditory organs at the proximal ends of the fore-tibiae; the binaural sensory input enables orientation to a sound source and in response to sound, crickets turn towards the more intensely stimulated of their two ears1. Airborne vibrations activate the auditory tympana of the ears, and are communicated to sensory scolopidia attached to the outer surface of the leg trachea, which forms an air space behind the tympanum2,3. For directionally-sensitive hearing, the responses of the two ears should differ when the direction of incident sound forms an angle with the insect's body axis. Directional hearing in crickets has previously been attributed to shielding of the contralateral ear by the insect's body4. We believe that shielding is insufficient to account for observed directionality, and propose an alternative theory which predicts the directional sensitivity of the cricket auditory system measured physiologically.