认为P＿3（或N＿3）是三叉神经根及三叉神经脊束核的突触前和突触后的混合电位。

It was not the rnuscle potential. We believe that P3(N3 )is mixedpresynaptic and postsynaptic potentials evoked from the trigeminal root and nucleus of trigeminalspine bundle.

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在延髓，ER分布于舌下神经核、迷走神经背核、三叉神经脊束核、孤束核和网状结构；

In the medulla oblongata, ER distributed in the hypoglossal nucleus, dorsal nucleus of vagus nerve, nucleus of spinal trigeminal tract, nucleus of solitary tract and reticular formation;

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