Seyfarth E A, Pflüger H J
J Neurobiol. 1984 Sep;15(5):365-74. doi: 10.1002/neu.480150506.
In spiders, retrograde cobalt staining was used to clarify the distribution and detailed innervation of the three types of proprioceptors in the tibio-metatarsal leg joint: internal joint receptors, lyriform slit sense organs, and cuticular spines and hairs. The axons of all these receptors run in just two lateral, ascending nerves, which had previously been associated only with the internal receptors. Each nerve contains several hundred axons ranging in diameter from 0.1 micron to ca. 10 micron. Each slit of the four tibial lyriform organs is innervated by two bipolar sensory neurons. The lateral nerves are entirely sensory and run just beneath the cuticle, a convenient site for electrophysiological recording. We demonstrate simultaneous nerve and muscle recordings from intact spiders; these, in combination with selective sensory ablations, show that a resistance reflex in the flexor metatarsi muscles is elicited by internal joint-receptor units.
在蜘蛛中，逆行钴染色被用于阐明胫跗关节中三种本体感受器的分布和详细神经支配情况：关节内感受器、琴形裂隙感觉器官以及表皮棘和毛。所有这些感受器的轴突仅在两条外侧上行神经中运行，而此前人们认为这两条神经仅与关节内感受器有关。每条神经包含数百条轴突，直径从0.1微米到约10微米不等。四条胫部琴形器官的每个裂隙都由两个双极感觉神经元支配。外侧神经完全是感觉性的，且就在角质层下方运行，这是一个便于进行电生理记录的部位。我们展示了从完整蜘蛛身上同时进行神经和肌肉记录的情况；这些记录与选择性感觉消融相结合，表明屈跗肌中的阻力反射是由关节内感受器单元引发的。
