Research Article

Analgesic Neural Circuits Are Activated by Electroacupuncture at Two Sets of Acupoints

Figure 2

The nuclei (areas) locations used for the c-Fos-like immunoreactive (c-Fos-IR) neurons counts and the representative c-Fos-IR neurons in AB. C1: spinal cord dorsal horn (SDH). P16: NTS at interaural levels of −16 mm. P12: NRM and GI at interaural levels of −12 mm. P5: PBN and LC at interaural levels of −5 mm. A6: the ventrolateral periaqueductal grey (vlPAG) at interaural levels of 6 mm. A15: the lateral habenula nucleus (HL) at interaural levels of 16 mm. A24: PVH, VMH, ARC, and nucleus amygdala basalis (AB) at interaural levels of 24 mm. A32: ACB, CAU, the lateral septal nucleus (LSN), and the medial septal nucleus (MSN) at interaural levels of 32 mm. (a)–(d) show positive c-Fos-IR neurons in AB in the blank control, sham control, EA at the set of bilateral Housanli acupoints, and the set of Santai and Baihui acupoints, respectively. Arrows point to the positive neurons. The bars = 100 μm.