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首页> 外文期刊>Zoological Science >Mechanosensory control of antennal movement by the scapal hair plate in the American cockroach
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Mechanosensory control of antennal movement by the scapal hair plate in the American cockroach

机译：在美国蟑螂中，肩hair发板对触角运动的机械感官控制

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The voluntary movement of antennae of blinded cockroaches was examined in the tethered-walking condition. An object of metal plate was presented to a tip of a single antenna in order to induce tactile orientation behavior. Horizontal movements of the antenna before and during the object presentation were analyzed both before and after ablation of a mechanosensory organ, the scapal hair plate (S-HP), at the base of antenna. The resting antennal position shifted outwardly by about 20degrees after the S-HP ablation. Spontaneous antennal movements in ablated animals became stiff and wider ranged. The tactile object was set at two different horizontal positions, 45degrees and 90degrees clockwise to the head, for the right side antenna. The number of contacts in a constant test period was significantly decreased in the tests at 45degrees after ablation. Trajectories of antennal movements before and after contacts were categorized into four patterns. In the case that an antenna made contact with the object during its abduction (outward) movement, it then passed the object outwardly or withdrew inwardly. These were termed "outward-pass (O-P)" and "outward-withdrawal (O-W)" patterns, respectively. Similarly, contacts during the adduction (inward) movement were divided into "inward-pass (IP)" or "inward-withdrawal (I-W)" pattern. Significant effects of the S-HP ablation appeared in the tests at 90degrees: the I-P pattern mostly disappeared and was replaced by the I-W pattern. The results strongly suggest that the S-HP has crucial roles for controlling both spontaneous and stimulated movements of the cockroach antenna.
机译：在栓系行走条件下检查了盲蟑螂触角的自愿运动。将金属板的物体呈现给单个天线的尖端，以便引起触觉定向行为。在消融机械感官器官，肩cap骨发plate（S-HP）之前和之后，分析了物体呈现前后天线的水平运动。 S-HP消融后，静止的触角位置向外偏移约20度。消融动物的自发触角运动变得僵硬，范围更广。将触觉对象设置在右侧天线的两个不同的水平位置，即与头部成顺时针方向分别为45度和90度。在消融后的45度测试中，恒定测试期间的接触数量显着减少。接触前后的触角运动轨迹分为四种模式。如果天线在其外展（向外）移动过程中与物体接触，则天线向外穿过物体或向内缩回。这些分别称为“外传（O-P）”和“外退（O-W）”模式。同样，内收（向内）运动期间的接触被分为“向内通（IP）”或“向内退（I-W）”模式。 S-HP消融的显着效果出现在90度的测试中：I-P模式几乎消失并被I-W模式取代。结果强烈表明，S-HP在控制蟑螂天线的自发运动和刺激运动方面都起着至关重要的作用。

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