A study using both anatomical dissection and electrophysiological recording has been made to analyse sensory components of the cervical dorsal rami in the cat. Particular attention has been paid to the physiological properties of Group III muscle afferents. The dorsal rami from C2 to C4 are composed of many nerve bundles that contain afferents from both muscle and skin. Bundles containing only cutaneous and only muscle afferents were identified and found to follow a relatively consistent pattern of organization within the ramus. In nerve bundles serving the biventer cervicis muscle, a population of Group III afferent fibres was identified that responded to strong localized pressure or localized stretch. Their receptive fields were generally small and situated on the muscle borders or in tendinous inscriptions. Such units comprised 73% of those with conduction velocities less than 20 m/s. Group III afferent fibres from neck muscles fired readily to intramuscular 6% sodium chloride, but were mostly not sensitive to bradykinin injected locally or intra-arterially.
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机译：已经进行了一项使用解剖解剖学和电生理记录的研究，以分析猫的颈背拉米的感觉成分。特别注意了第III组肌肉传入的生理特性。从C2到C4的背脊由许多神经束组成，这些神经束包含来自肌肉和皮肤的传入神经。识别仅包含皮肤传入和仅肌肉传入的束，并发现其遵循支气管内相对一致的组织模式。在服务于双头颈肌的神经束中，鉴定出对强烈的局部压力或局部拉伸有反应的第三组传入纤维。它们的感受野通常很小，位于肌肉边界或腱铭文上。这种单元占传导速度小于20 m / s的单元的73％。来自颈部肌肉的第三组传入纤维易于发射至肌内6％氯化钠，但大多数对局部或动脉内注射的缓激肽不敏感。
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