Briefly describe the proprioceptors of trunk and limbs → sensory nerves of limbs → exchange neurons of nerve center under spinal cord → ascending conduction bundle of spinal cord → proprioception area of somatosensory center of cerebral cortex → generating proprioception.
Extended data
Proprioception refers to the feeling of muscles, tendons, joints and other moving organs in different States (motion or rest) (for example, people can perceive the positions of various parts of the body by closing their eyes). Because of its deep location, it is also called affectionate. In addition, in the proprioception conduction path, it also conducts the fine touch of the skin (such as distinguishing the distance between two points, the texture thickness of the object, etc.). ). It mainly involves proprioception conduction pathway of trunk and limbs (belonging to parietal lobe function).
Proprioception can be divided into three levels: level one: the sense of position, movement and bearing of muscles, tendons, ligaments and joints; Secondary: sense of balance in vestibule and sense of motor coordination in cerebellum; Level 3: comprehensive motor sensation in cerebral cortex. The loss of proprioception in patients with bone injury is mainly the first degree, and the loss of proprioception in patients with sports injury is mainly the first and second degree. The loss of proprioception in patients with nerve injury is mainly tertiary loss.
According to the inherent law of motor function re-acquisition: sensory input (assisted by external force) → proprioception input (without external force) → standard fixation of motor mode → repeated or excessive standard exercise → establishment of motor function area of cerebral cortex → motor function re-acquisition. We can know that without proprioception input, no motor function can be regained.
References:
Baidu encyclopedia noumenon feeling