title: Age-related temporal-spatial dynamic ERP changes during sentence comprehension.
abstract: The aim of the present study was to investigate whether age-related brain response alterations during sentence comprehension exist when verbal fluency and intelligence are controlled for. Twenty-four younger and twenty-four older adults with matched verbal fluency, verbal intelligence, years of education, and gender ratio were recruited. They were asked to read congruent (CON) and incongruent (INCON) sentences to make semantic acceptability judgments. A significant group by condition interaction on accuracy was found, showing a significant congruency effect in younger, but not older adults. The ERP results revealed a dynamic temporal-spatial change in older adults. The congruency related N400 effect was reduced and delayed significantly in the older adults compared to the younger adults, and accompanied by different distribution patterns across time windows. The late positive component with more positive-going in the INCON condition than the CON condition was found in older adults only, which did not correlate with the performance, however. The results suggest that with age, there is a decline in semantic processing during sentence comprehension.
authors.affiliation: School of Linguistic Sciences and Arts, Jiangsu Normal University, Xuzhou, 221009, China.
authors.forename: Nannan
authors.initials: N
authors.lastname: Xu
authors.affiliation: School of Linguistic Sciences and Arts, Jiangsu Normal University, Xuzhou, 221009, China.
authors.forename: Xiaopu
authors.initials: X
authors.lastname: Hou
authors.affiliation: School of Linguistic Sciences and Arts, Jiangsu Normal University, Xuzhou, 221009, China.
authors.forename: Beibei
authors.initials: B
authors.lastname: Zhao
authors.affiliation: School of Linguistic Sciences and Arts, Jiangsu Normal University, Xuzhou, 221009, China; Collaborative Innovation Center for Language Competence, Xuzhou, 221009, China; Jiangsu Key Laboratory of Language and Cognitive Neuroscience, Xuzhou, 221009, China. Electronic address: zhuzude@163.com.
authors.forename: Zude
authors.initials: Z
authors.lastname: Zhu
authors.affiliation: School of Linguistic Sciences and Arts, Jiangsu Normal University, Xuzhou, 221009, China; Collaborative Innovation Center for Language Competence, Xuzhou, 221009, China; Jiangsu Key Laboratory of Language and Cognitive Neuroscience, Xuzhou, 221009, China. Electronic address: yangym@jsnu.edu.cn.
authors.forename: Yiming
authors.initials: Y
authors.lastname: Yang
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000368:Aged; D032882:Comprehension; D004569:Electroencephalography; D005071:Evoked Potentials; D005260:Female; D006801:Humans; D008297:Male; D012660:Semantics; D014705:Verbal Behavior; D055815:Young Adult
keywords: Aging; Late positive component; N400