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AIM: To analyze the effect of substance K on pain modulation in the periaqueductal gray (PAG) of rats and indicate the neurotransmitter mechanism in endogenous analgesia system.
目的：分析K物质在大鼠中脑导水管周围灰质中参与痛觉调制的作用，揭示内源性镇痛系统的神经递质机制。
A kind of coding method of gray-scale phase-only matched filter according to the phase modulation property of the spatial light modulator has presented.
根据空间光调制器的相位调制作用，提出了一种灰阶纯位相匹配滤波器编码方法。
On the other hand, amygdala may also be involved in pain modulation through connections with periaquiductal gray (PAG), rostral ventromedial medulla (RVM), and other brain stem areas.
同时，杏仁核也通过与导水管周围灰质、延髓头端腹内侧区及其它脑干核团的纤维联系参与镇痛过程。
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