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

Figure 3

The effects of naltrindole on 100 Hz EA-induced alterations in sleep. Shade area: _ipPFS+PFS, open circles: _ipketamine+PFS, closed circles: _ipketamine+PFS+EA, open triangles: _ipketamine+naltrindole(10𝜇g)+EA. *represents a statistically significant difference between the values obtained from _ipketamine+PFS and _ipPFS+PFS. ^§depicts a statistically significant difference between the values obtained from _ipketamine+PFS+EAand _ipketamine+PFS.

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