The effects of olanzapine,clozapine,risperidone and quetiapine treatment on P50 sensory gating in first-ep-isode schizophrenics
10.3760/cma.j.issn.1674-6554.2010.01.008
- VernacularTitle:奥氮平、氯氮平、利培酮、喹硫平对首发精神分裂症患者P50感觉门控的影响
- Author:
Junqing WANG
;
Lanxian YE
;
Chongtao XU
;
Yongning ZHUO
- Publication Type:Journal Article
- Keywords:
Atypical antipsyehotie;
First-episode schizophrenics;
P50 sensory gating
- From:
Chinese Journal of Behavioral Medicine and Brain Science
2010;19(1):24-26
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the effects of atypical antipsyehoties treatment on PS0 sensory gating in first-episode schizophrenics. Methods The P50 auditory evoked potential was recorded by using conditioning-testing stimulus paradigm and stimulus train paradigm in 36 normal controls and 53 first-episode schizophrenics be-fore and after treatment,and compare the difference of P50 sensory gating after treatment. Results Before treat-ment, compared with control group, the atypical groups both had statistic difference of T-P50 amplitude ((1.01±0.88)μV, (0.68±0.64)μV, (0.58±0.47)μV), P50 suppression ((0.61±0.27), (0.54±0.22, (0. 59± 0.19)) in conditioning-testing stimulus paradigm and P50 amplitude,P50 suppression evoked by high frequency stimuli in stimulus train paradigm(P < 0.05), but no difference among the atypical groups (P > 0.05). After treat-ment,compared with control group, there was no statistic difference in olanzapine and elozapine groups of T-P50 amplitude and P50 suppression in conditioning-testing stimulus paradigm, but the difference in risperidone and que-tiapine groups still obviously(P<0.05). In stimulus train paradigm, there was no statistic difference of P50 ampli-tude, P50 suppression evoked by high frequency stimuli in every groups (P>0.05). Compared within atypical groups, the difference of P50 amplitude and P50 suppression were both obviously(P<0.05). Conclusion Each a-typical antipsychotic has different effect on P50 sensory gating;and the conditioning-testing stimulus paradigm and stimulus train paradigm P50 sensory gating may reflect different central neuron mechanism.
