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Specific Acupuncture Points Influence Cortical Auditory Evoked Potentials

Topic: Specific Acupuncture Points Influence Cortical Auditory Evoked Potentials

Keywords: HEARING, AUDITORY FUNCTION - HEARING, CORTICAL AUDITORY EVOKED POTENTIALS

Reference: "Acupuncture of specific points influences cortical auditory evoked potentials--a volunteer crossover study," Lietz P, Schmidt R, et al, Acupunct Electrother Res, 2008; 33(1-2): 1-8. (Address: Department of Surgery, Military Hospital of Berlin, Germany).

Summary: In a study involving 10 healthy volunteers, acupuncture at specific acupuncture points (TH-3 and GB-43) related to the auditory system according to traditional Chinese medicine was found to influence Cortical Auditory Evoked Potentials (CAEP), while acupuncture at points not specifically linked to the auditory system in Chinese medicine (HT-7 and ST-44), did not have the same influence on the auditory system. Subjects received 4 sessions of acupuncture at points specifically related to the auditory system (TH-3 and GB-43) and at points non-specific for the auditory system (HT-7 and ST-44), with a one week interval between each session. Before and after each acupuncture treatment, the latencies and amplitudes of CAEP were registered. After stimulation of TH-3, the mean peak latencies of P2 component decreased by 11 ms while components of N2 increased by 9 ms. After stimulation of GB-43, the mean peak latencies of P2 component decreased by 14 ms, while N2 component increased by 4 ms. On the other hand, stimulation of HT-7 and ST-44 did not lead to such changes. The authors conclude, "These findings confirm the specificity of acupuncture points TH3 and GB43 in relation to auditory system."

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