Although its function is not known completely , pv may play important roles in the axonal flow , cell metabolism and synaptic transmission through binding with ca2 + . our previous studies showed that pv is distributed densely in the relay nuclei on the central four orders pathway of the trigeminal proprioceptive sensation and there are approximately 30 - 50 % of pv - li neurons projected to vpm of the thalamus in the third - order nuclei 我們最近的研究表明, pv樣免疫陽性細胞在三叉神經(jīng)本體覺中樞通路各級核團中均有較密集的分布,并且在二、三級神經(jīng)元所在地? vodm - lrf和帶狀區(qū)中大約有30 - 50的pv樣陽性神經(jīng)元為投射神經(jīng)元。