Kappa-Opioid Receptors in the Caudal Nucleus Tractus Solitarius Mediate 100 Hz Electroacupuncture-Induced Sleep Activities in Rats

<table>A hypothetical model by which different frequencies of EA Anmian (EX17) alter SWS through different opioid receptors in the caudal NTS. <i>β</i>-EN: <i>β</i>-endorphin; DYN: dynorphin.</table>

Evidence-Based Complementary and Alternative Medicine

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Figure 5

Figure 5: Kappa-Opioid Receptors in the Caudal Nucleus Tractus Solitarius Mediate 100 Hz Electroacupuncture-Induced Sleep Activities in Rats 