P50與symptom dimension！
2005年，一群法國人發現比起PANSS負性總分低的55位schizophrenia patients，PANSS負性總分高的31位schizophrenia patients具有significantly increased T/C ratios[P50 inhibitory gating deficit is correlated with the negative symptomatology of schizophrenia. Psychiatry Research. 136 27-34]
不過同年New Mexico研究團隊（MXHuang, Michael Weisand）同時做ERP(P50)與MEG(M50)，最後發現Negative symptom與P50無關，但卻與M50有相關 
M50 sensory gating predicts negative symptoms in schizophrenia. Schizophrenia Research 2005 Mar 1;73(2-3):311-8.
一樣是用MEG：這一篇1998年[Resersal of cerebral asymmetry in schizophrenia measured with magnetoencephalography]認為reversed left-right asymmelry與PANSS general psychopathological score有相關
