LIU Li,QIN Xiao-xia,HUANG Yong-jin,BI Hong-xi.Relationship between cognitive disorders in schizophrenia and event-related potential P300[J].J Amry Med Univ (J Third Mil Med Univ),2007,29(23):2286-2288.
LIU Li,QIN Xiao-xia,HUANG Yong-jin,BI Hong-xi.Relationship between cognitive disorders in schizophrenia and event-related potential P300[J].J Amry Med Univ (J Third Mil Med Univ),2007,29(23):2286-2288.DOI:
Objective To explore the relationship between the cognitive disorders in the first episode of schizophrenia and P300 components. Methods P300 components were measured by using an auditory oddball paradigm with a Denmark KeyPoint Evoked Potentials instrument in 60 cases of schizophrenia and 3 cases of schizophreniform disorder
whose psychopathological status was assessed with the Positive and Negative Syndrome Scale (PANSS). Forty healthy subjects were used as control. Results The principal component analysis of the PANSS items revealed five factors: cognitive disorder
negative symptoms
depressive disorder
hostility/excitement and delusion/hallucination. The patients had lower amplitude of P300 at Fz
Cz
Pz
T3 and T4 than the normal controls (P0.05 or P0.01). The scores for the cognitive function were correlated negatively with the amplitude of P300 recorded at Fz and T3
but not with Cz
Pz or T4. Conclusion The decreased amplitude of frontotemporal P300 reflects the cognitive disorder in schizophrenia to some extent.