目前

耳针的机理尚未十分清楚

其作用于外周的基础是什么还不明确。现代解剖学研究表明支配耳廓神经有属躯体神经

如耳大、枕小神经;有属颅脑神经

如迷走、舌咽、面及三叉神经的耳支。此外

还有交感神经等支配。以上神经与耳针作用的This invcsligation was pcrformcd with thirty adult rabbits which dividcd auricular vagus

great auricular

cervical sympathcric and all auricular denervation.By gastrointestinal electro-physiologic methods

the changes of gastroiutestihal electric activity in corpus

antrum

dudenum and colon were observed with ear needing to evaluate the mechanism of function of auricular point. Results: In intact car innervation

the changes of gastrointestinal electricactivity on car needling were obvious (P<0.05—0.01). While the one with carnerve sected showed that influence of ear acupuncture still remaincd

but whenthe whole auricle was dencrvatcd the influcnce of car needling on gastrointestinalelectric activity obvicusly deceased or disappeared

pre-and post needing thechanges on gastrointestinal electric activity were not statistically different (P>0.05). Recordings at the four parts of digestive tract gave similar rcsults infrequancy

amplitude

inotility index

action area integral. Exerting stimulation on gastric vagus or sympathetic nerves could bring about double phase modulatory (excitory or inhibitory). The above revealed that the functions of car point in diaghosis and therapy is not due to one kind of nerves in periphery. The functions of ear point at innervation may be in its entirety. It was rcportcd that function of car points has something to do with auricular vagus or great auricular or sympathetic nerves

but

this is only one side of the matter. Moreover

since auricular point are associated with various propagatal tracts and with modulation of nerve centers

their mechanism is very complicated and needs to be further studies.