Language difficulties vary widely among people with autism spectrum disorder(ASD).However,the semantic processing of autistic person and its underlying electrophysiological mechanism are still unclear.This meta-analys...Language difficulties vary widely among people with autism spectrum disorder(ASD).However,the semantic processing of autistic person and its underlying electrophysiological mechanism are still unclear.This meta-analysis aimed to explore the disturbance of semantic processing in patients with ASD.PubMed,Web of Science,and Embase were searched for eventrelated potential(ERP)studies on semantic processing in autistic people published in English before September 01,2022.Pooled estimates were calculated by fixed-effects or random-effects models according to the heterogeneity using Comprehensive Meta-Analysis 2.0.The potential moderators were explored by meta-regression and subgroup analysis.This meta-analysis has been registered at the Prospero International Prospective Register of Systematic Reviews(no.CRD 42021265852).A total of 14 articles and 18 studies,including 254 autistic people and 262 neurodevelopmental people were included in this meta-analysis.Compared to the comparison group,autistic people showed an overall reduced N400 amplitude(Hedges’g=0.350,p<0.001)in response to linguistic stimuli instead of non-linguistic stimuli.The N400 amplitude was affected by verbal intelligence and gender.The reduced overall N400 amplitude in autistic people under linguistic stimuli suggests a linguistic-specific deficit in semantic processing in individuals of autism.The decrease of N400 amplitude might be a promising indication of the pool language capacity of autism.展开更多
目的·探究伴思维形式障碍(formal thought disorder,FTD)的精神分裂症(schizophrenia,SZ)患者、不伴FTD的SZ患者、遗传高危被试及健康对照者在语言加工时事件相关电位中N400、P600成分的差异。方法·选择于上海交通大学医学院...目的·探究伴思维形式障碍(formal thought disorder,FTD)的精神分裂症(schizophrenia,SZ)患者、不伴FTD的SZ患者、遗传高危被试及健康对照者在语言加工时事件相关电位中N400、P600成分的差异。方法·选择于上海交通大学医学院附属精神卫生中心住院的伴FTD的SZ患者30例及不伴FTD的SZ患者29例、遗传高危被试(SZ患者的一级亲属)22例及健康对照者31名作为研究对象。要求上述被试完成4种句子加工任务(语义和句法均正确;语义错误,句法正确;句法错误,语义正确;语义和句法均错误),同时记录脑电数据。采用重复测量方差分析比较4组被试的反应正确率及N400、P600成分的波幅和潜伏期的差异。结果·与健康对照者比较,伴FTD的SZ患者反应正确率降低(P=0.000)。伴FTD的SZ患者未诱发显著的N400成分,其N400波幅与健康对照者比较差异有统计学意义(P=0.003)。4组被试均诱发了P600成分,语义、句法和组别之间存在显著的交互作用(P=0.022);进一步分析发现,伴FTD的SZ患者与不伴FTD的SZ患者P600波幅在句法正确和句法错误时差异无统计学意义;伴FTD的SZ患者P600波幅在语义正确和语义错误时差异无统计学意义,其他3组语义正确条件时的P600波幅大于语义错误时的P600波幅。结论·SZ患者在语义加工水平神经活动异常,伴FTD的SZ患者语义和句法加工均受到损害。展开更多
基金The National Key Research and Development Program of China(Grant Number 2021ZD0202004).
文摘Language difficulties vary widely among people with autism spectrum disorder(ASD).However,the semantic processing of autistic person and its underlying electrophysiological mechanism are still unclear.This meta-analysis aimed to explore the disturbance of semantic processing in patients with ASD.PubMed,Web of Science,and Embase were searched for eventrelated potential(ERP)studies on semantic processing in autistic people published in English before September 01,2022.Pooled estimates were calculated by fixed-effects or random-effects models according to the heterogeneity using Comprehensive Meta-Analysis 2.0.The potential moderators were explored by meta-regression and subgroup analysis.This meta-analysis has been registered at the Prospero International Prospective Register of Systematic Reviews(no.CRD 42021265852).A total of 14 articles and 18 studies,including 254 autistic people and 262 neurodevelopmental people were included in this meta-analysis.Compared to the comparison group,autistic people showed an overall reduced N400 amplitude(Hedges’g=0.350,p<0.001)in response to linguistic stimuli instead of non-linguistic stimuli.The N400 amplitude was affected by verbal intelligence and gender.The reduced overall N400 amplitude in autistic people under linguistic stimuli suggests a linguistic-specific deficit in semantic processing in individuals of autism.The decrease of N400 amplitude might be a promising indication of the pool language capacity of autism.
文摘目的·探究伴思维形式障碍(formal thought disorder,FTD)的精神分裂症(schizophrenia,SZ)患者、不伴FTD的SZ患者、遗传高危被试及健康对照者在语言加工时事件相关电位中N400、P600成分的差异。方法·选择于上海交通大学医学院附属精神卫生中心住院的伴FTD的SZ患者30例及不伴FTD的SZ患者29例、遗传高危被试(SZ患者的一级亲属)22例及健康对照者31名作为研究对象。要求上述被试完成4种句子加工任务(语义和句法均正确;语义错误,句法正确;句法错误,语义正确;语义和句法均错误),同时记录脑电数据。采用重复测量方差分析比较4组被试的反应正确率及N400、P600成分的波幅和潜伏期的差异。结果·与健康对照者比较,伴FTD的SZ患者反应正确率降低(P=0.000)。伴FTD的SZ患者未诱发显著的N400成分,其N400波幅与健康对照者比较差异有统计学意义(P=0.003)。4组被试均诱发了P600成分,语义、句法和组别之间存在显著的交互作用(P=0.022);进一步分析发现,伴FTD的SZ患者与不伴FTD的SZ患者P600波幅在句法正确和句法错误时差异无统计学意义;伴FTD的SZ患者P600波幅在语义正确和语义错误时差异无统计学意义,其他3组语义正确条件时的P600波幅大于语义错误时的P600波幅。结论·SZ患者在语义加工水平神经活动异常,伴FTD的SZ患者语义和句法加工均受到损害。
