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Author | Year | Title | Objective | Outcomes |
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Abad-Alegría and Pomarón [30] | 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. |
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Kvorning et al. [31] | 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. |
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Meissner et al. [32] | 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. |
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Wei et al. [33] | 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. |
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Zeng et al. [34] | 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. |
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