Effects of Diet on Early Stage Cortical Perception and Discrimination of Syllables Differing in Voice-Onset Time: A Longitudinal ERP Study in 3 and 6 Month Old Infants

Autor/inn/en	Pivik, R. T.; Andres, Aline; Badger, Thomas M.
Titel	Effects of Diet on Early Stage Cortical Perception and Discrimination of Syllables Differing in Voice-Onset Time: A Longitudinal ERP Study in 3 and 6 Month Old Infants
Quelle	In: Brain and Language, 120 (2012) 1, S.27-41 (15 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0093-934X
DOI	10.1016/j.bandl.2011.08.004
Schlagwörter	Brain Hemisphere Functions; Speech; Infants; Dietetics; Auditory Perception; Language Processing; Auditory Discrimination; Classification; Diagnostic Tests; Phonetics; Environmental Influences; Syllables; Longitudinal Studies; Responses; Measures (Individuals) + Suchen Sie Ihr Suchwort? Speaking; Sprechen; Infant; Toddler; Toddlers; Kleinkind; Ernährungslehre; Auditive Wahrnehmung; Akustische Wahrnehmung; Akustik; Sprachverarbeitung; Classification system; Klassifikation; Klassifikationssystem; Diagnostic test; Diagnostischer Test; Phonetik; Fonetik; Environmental influence; Umwelteinfluss; Silbe; Longitudinal study; Longitudinal method; Longitudinal methods; Längsschnittuntersuchung; Messdaten
Abstract	The influence of diet on cortical processing of syllables was examined at 3 and 6 months in 239 infants who were breastfed or fed milk or soy-based formula. Event-related potentials to syllables differing in voice-onset-time were recorded from placements overlying brain areas specialized for language processing. P1 component amplitude and latency measures indicated that at both ages infants in all groups could extract and discriminate categorical information from syllables. Between-syllable amplitude differences--present across groups--were generally greater for SF infants. Responses peaked earlier over left hemisphere speech-perception than speech-production areas. Encoding was faster in BF than formula-fed infants. The results show that in preverbal infants: (1) discrimination of phonetic information occurs in early stages of cortical processing; (2) areas overlying brain regions of speech perception are activated earlier than those involved in speech production; and (3) these processes are differentially modulated by infant diet and environmental factors. (Contains 3 tables and 7 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10