Electrophysiological Correlates of Rapid Auditory and Linguistic Processing in Adolescents with Specific Language Impairment

Autor/inn/en	Weber-Fox, Christine; Leonard, Laurence B.; Wray, Amanda Hampton; Tomblin, J. Bruce
Titel	Electrophysiological Correlates of Rapid Auditory and Linguistic Processing in Adolescents with Specific Language Impairment
Quelle	In: Brain and Language, 115 (2010) 3, S.162-181 (20 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0093-934X
DOI	10.1016/j.bandl.2010.09.001
Schlagwörter	Sentences; Auditory Stimuli; Semantics; Verbs; Intonation; Language Impairments; Integrity; Adolescents; Language Processing; Grade 8; Brain Hemisphere Functions; Diagnostic Tests; Correlation; Morphology (Languages); Syntax + Suchen Sie Ihr Suchwort? Sentence analysis; Satzanalyse; Auditive Stimulation; Semantik; Speech disorder; Speech disorders; Speech disabilities; Speech disability; Speech handicap; Speech handicaps; Speech impairment; Speech impairments; Language handicaps; Sprachbehinderung; Integrität; Adolescent; Adolescence; Adoleszenz; Jugend; Jugendalter; Jugendlicher; Sprachverarbeitung; School year 08; 8. Schuljahr; Schuljahr 08; Diagnostic test; Diagnostischer Test; Korrelation; Morphology; Morphologie
Abstract	Brief tonal stimuli and spoken sentences were utilized to examine whether adolescents (aged 14;3-18;1) with specific language impairments (SLI) exhibit atypical neural activity for rapid auditory processing of non-linguistic stimuli and linguistic processing of verb-agreement and semantic constraints. Further, we examined whether the behavioral and electrophysiological indices for rapid auditory processing were correlated with those for linguistic processing. Fifteen adolescents with SLI and 15 adolescents with normal language met strict criteria for displaying consistent diagnoses from kindergarten through the eighth grade. The findings provide evidence that auditory processing for non-linguistic stimuli is atypical in a significant number of adolescents with SLI compared to peers with normal language and indicate that reduced efficiency in auditory processing in SLI is more vulnerable to rapid rates (200 ms ISI) of stimuli presentation (indexed by reduced accuracy, a tendency for longer RTs, reduced N100 over right anterior sites, and reduced amplitude P300). Many adolescents with SLI displayed reduced behavioral accuracy for detecting verb-agreement violations and semantic anomalies, along with less robust P600s elicited by verb-agreement violations. The results indicate that ERPs elicited by morphosyntactic aspects of language processing are atypical in many adolescents with SLI. Additionally, correlational analyses between behavioral and electrophysiological indices of processing non-linguistic stimuli and verb-agreement violations suggest that the integrity of neural functions for auditory processing may only account for a small proportion of the variance in morphosyntactic processing in some adolescents. (Contains 4 tables and 10 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10