Effects of force detecting sense organs on muscle synergies are correlated with their response properties.
Effects of force detecting sense organs on muscle synergies are correlated with their response properties.
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DOI：
10.1016/j.asd.2017.05.004
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发表时间：
2017-07
影响因子：
2
通讯作者：
Büschges A
中科院分区：
文献类型：
--
作者：
Zill SN;Neff D;Chaudhry S;Exter A;Schmitz J;Büschges A
监测腿部力量的感觉器官可以促进肌肉群的激活。先前在蟑螂和竹节虫中的研究表明，钟状感受器，通过外骨骼应变编码力的受体，增强了基质抓握中的肌肉协同作用。然而，在蟑螂（转子感器）和竹节虫（股骨感器）中，不同的受体群介导了受体的激活。差异效应的因素尚不清楚，因为股骨钟形感器的反应以前没有被表征。本研究的特点是结构和响应特性（通过细胞外记录）的股感器在这两种昆虫。蟑螂转子股骨（TrF）关节是移动的和关节膜作为一个弹性拮抗剂的还原肌。蟑螂股骨钟状感器在髋-转子（CTr）关节平面（由髋肌肉产生的力）中对力表现出微弱的放电，但相反地编码指向后方的力（TrF关节平面）。在竹节虫中，TrF关节融合，股骨钟状感器放电到向后定向的力和CTr关节平面中的力。这些发现支持了这样一种观点，即增强协同作用的受体在用于支撑和推进的腿部肌肉的作用平面中编码力。
Sense organs that monitor forces in legs can contribute to activation of muscles as synergist groups. Previous studies in cockroaches and stick insects showed that campaniform sensilla, receptors that encode forces via exoskeletal strains, enhance muscle synergies in substrate grip. However synergist activation was mediated by different groups of receptors in cockroaches (trochanteral sensilla) and stick insects (femoral sensilla). The factors underlying the differential effects are unclear as the responses of femoral campaniform sensilla have not previously been characterized. The present study characterized the structure and response properties (via extracellular recording) of the femoral sensilla in both insects. The cockroach trochantero-femoral (TrF) joint is mobile and the joint membrane acts as an elastic antagonist to the reductor muscle. Cockroach femoral campaniform sensilla show weak discharges to forces in the coxo-trochanteral (CTr) joint plane (in which forces are generated by coxal muscles) but instead encode forces directed posteriorly (TrF joint plane). In stick insects, the TrF joint is fused and femoral campaniform sensilla discharge both to forces directed posteriorly and forces in the CTr joint plane. These findings support the idea that receptors that enhance synergies encode forces in the plane of action of leg muscles used in support and propulsion.
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DOI：
10.1007/bf00609673
发表时间：
1982-01-01
期刊：
JOURNAL OF COMPARATIVE PHYSIOLOGY
影响因子：
--
作者：
HUSTERT, R
通讯作者：
HUSTERT, R
影响因子：
2.8
作者：
Isakov, Alexander;Buchanan, Sean M.;de Bivort, Benjamin
通讯作者：
de Bivort, Benjamin
影响因子：
3.6
作者：
KENT, KS;GRIFFIN, LM
通讯作者：
GRIFFIN, LM
影响因子：
5.3
作者：
Laine, Christopher M.;Martinez-Valdes, Eduardo;Farina, Dario
通讯作者：
Farina, Dario
影响因子：
2
作者：
Neff, D;Frazier, SF;Zill, S
通讯作者：
Zill, S