Auditory ERPs during rhyme and semantic processing: Effects of reading ability in college students

Author(s): Cheng, J. C., Velting, D. M., Kazmerski, V.

Journal/Book: J Clin Exp Neuropsychol. 1997; 19: P O Box 825, 2160 Sz Lisse, Netherlands. Swets Zeitlinger Publishers. 313-330.

Abstract: Event-related potential (ERP), reaction time (RT), and response accuracy measures were obtained during the phonological and semantic categorization of spoken words in 14 undergraduates: 7 were average read era and 7 were reading-impaired. For the impaired readers, motor responses were significantly slower and less accurate than were those of the average readers in both classification tasks. ERPs obtained during rhyme processing displayed a relatively larger amplitude negativity at about 180 ms for the impaired readers as compared to the average readers, whereas semantic processing resulted in no major group differences in the ERPs at this latency. Also, N480 amplitude was larger during semantic relative to phonological classification for the average readers but not for the impaired readers. Results are compared to a previous study of reading-impaired children on the same tasks.

Note: Article Lovrich D, SUNY Empire State Coll, 223 Store Hill Rd, POB 130, Old Westbury,NY 11568 USA

Keyword(s): EVENT-RELATED POTENTIALS; WORD-RECOGNITION; BRAIN POTENTIALS; ADULT DYSLEXICS; DEVELOPMENTAL DYSLEXIA; LEARNING-DISABILITIES; LEXICAL DECISION; SPOKEN SENTENCES; MEMORY; N400

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