Abad-Alegría and Pomarón ||2004||About the neurobiological foundations of the De-Qi-stimulus-response relation||Evaluation of EA effects without deqi during needle insertion at LI4 versus EA with deqi versus painful overstimulation versus EA at NAP on SEPs||Their measurements showed a direct relation between F-waves and SEPs with increasing electrostimulus, with main inflexion during deqi, whereas, with ongoing stimulation, greater variations took place, especially in case of SEP latency.|
In contrast, EA at a NAP did not produce any of the aforementioned effects.
|Kvorning et al. ||2003||Acupuncture facilitates neuromuscular and oculomotor responses to skin incision with no influence on auditory evoked potentials under sevoflurane anaesthesia||Evaluation of bilateral EA effects at LI4, PC6, ST36, SP9, LR3, SP6 versus sham EA on AEPs||They found no significant difference of mid-latency or any other AEPs between the two groups, which could have correlated with the depth of anesthesia.|
|Meissner et al. ||2004||Acupuncture decreases somatosensory evoked + potential amplitudes to noxious stimuli in anesthetized volunteers||Evaluation of SEP changes after bilateral EA at ST36, SP6, LR3 versus sham EA||They detected a decrease in the magnitudes of late SEP amplitudes (P260) after verum but not sham EA.|
|Wei et al. ||2000||Early-latency somatosensory evoked potentials elicited by electrical acupuncture after needling acupoint LI-4||Evaluation of SEPs elicited by EA at LI4 (r) versus nearby NAP||Their results presented longer N1 and N2 latencies by acupuncture at LI4 as well as acupuncture at a nearby NAP than by median nerve stimulation, but showed no significant SEP differences between acupuncture at LI4 versus NAP.|
|Zeng et al. ||2006||Electroacupuncture modulates cortical activities evoked by noxious somatosensory stimulations in human||Temporal evaluation of EEG activities and evaluation of effects on painful SEPs after EA at LI4 (l) versus nearby NAP||EA at LI4 but not at a nearby NAP produced later-latency SEPs (P150) in bilateral ACC and attenuated pain specific amplitudes of P170 and N280 after median nerve stimulation.|