Evidence-Based Complementary and Alternative Medicine / 2015 / Article / Tab 4

Review Article

Neuroimaging and Neuromonitoring Effects of Electro and Manual Acupuncture on the Central Nervous System: A Literature Review and Analysis

Table 4

EP studies on the effect of MA and EA.

AuthorYearTitleObjectiveOutcomes

Abad-Alegría and Pomarón [30]2004About the neurobiological foundations of the De-Qi-stimulus-response relationEvaluation of EA effects without deqi during needle insertion at LI4 versus EA with deqi versus painful overstimulation versus EA at NAP on SEPsTheir 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. [31]2003Acupuncture facilitates neuromuscular and oculomotor responses to skin incision with no influence on auditory evoked potentials under sevoflurane anaesthesiaEvaluation of bilateral EA effects at LI4, PC6, ST36, SP9, LR3, SP6 versus sham EA on AEPsThey 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. [32]2004Acupuncture decreases somatosensory evoked + potential amplitudes to noxious stimuli in anesthetized volunteersEvaluation of SEP changes after bilateral EA at ST36, SP6, LR3 versus sham EAThey detected a decrease in the magnitudes of late SEP amplitudes (P260) after verum but not sham EA.

Wei et al. [33]2000Early-latency somatosensory evoked potentials elicited by electrical acupuncture after needling acupoint LI-4Evaluation of SEPs elicited by EA at LI4 (r) versus nearby NAPTheir 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. [34]2006Electroacupuncture modulates cortical activities evoked by noxious somatosensory stimulations in humanTemporal evaluation of EEG activities and evaluation of effects on painful SEPs after EA at LI4 (l) versus nearby NAPEA 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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