关于针感现象已有很多调查研究

薛崇成研究了截肢患者经络感作现象

认为经络感传现象是针刺穴位引起的兴奋在皮层沿特定经络模式扩延的结果。何广新根据临床观察认为针感循经传导现象与幻肢感、蚁行感不是同一过程。有人认为经络感传的形成有其相应的中枢和外周的生理、病理生理学基础。因此进一步观察分析幻肢感、幻肢痛患者的针感传导现象具有重要的意义。方法与结果观察对象为截肢患者

共52例

共中52 Cases of amputation have been observed. Of 52 amputees

12 cases are due to gunshot wound

and the rest cases are traffic or production tra- uma amputation. They are all adults except one child. Of them

24 cases complain of phantom limb

28 cases phantom pain (7 cases having both phantom limb and phantom pain)

and 7 cases have neither phantom limb nor phantom pain. When needling the points near stump

the PSC reaches phantom limb only in 4 cases. While needling the point on the healthy limb corresponding to the point on the diseased side

the PSC reaches a site corresponding to that of the phantom limb on the opposite side in 28 cases

reaches a site corresponding to the stump on the opposite side in 13 cases

and stays around the needled locus in 9 cases. The results indicate that all phantom limbs are not evoked

and all phantom pain are not evo- ked either by needling the points near stump. Some factors affecting pha- ntom limb and phantom pain are discussed. Phantom limb is a sequela of amputation

and is a pathological phenomenon. Channel phenomenon is not a sequela of some disease

but an intrinsic physiological function. The exi- stence and its spacial static site of phantom do not depend on afferent input

yet the existence of the so-called "phantom channel" does depend on acupuncture. The word "phantom channel" can not satisfactorily explain the channel phenomenon. Just as limbs have its struncture in the periphe- ral

and its representation in the cerebral cortex

channels may also have its structure in the peripheral

and its representation in the cerebral cortex.