【摘要】 用细胞外微电极记录方法和条件—检验刺激技术,观察分析杏仁中央核对猫丘脑后核群内脏痛觉诱发放电的调制作用和纳洛酮对该杏仁中央核调制作用的影响。结果表明,杏仁中央核可明显抑制内脏痛,其抑制作用不被纳洛酮所拮抗。提示杏仁中央核对内脏痛的抑制作用不依赖于内源性阿片样物质。更多还原

【Abstract】 As an index of visceral pain,the discharges of the neuron in the posterior group of thala-mic nuclei (PO) evoked by stimulating greater splanchnic nerve (SPL) in cat were researched extracellu-larly. The effects of central nucleus of amygdaloid (CE) .the interaction between naloxone and CE on the unit discharges were also studied with testconditioning stimulation technigues. The results indicated that CE could inhibit the neuron discharges in PO coused by excitation of SPL obviosly. The meterials obtained also showed that its inhibitory effect could not be reversed by naloxone. It can be conclucded that endogenous opiate-like substances are not involved in the CE-induced inhibitory effect on visceral pain.更多还原