Brain responses to tonal changes in the first two years of life

Jing, Hongkui; Benasich, April A.

doi:10.1016/j.braindev.2005.09.002

Cited by 40 publications

(39 citation statements)

References 34 publications

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“…Second, we showed that a clear N250 is mostly absent in FT3 and PT6 infants but becomes stronger in FT6 and PT9 infants. These observations are also consistent with previous studies showing that full-term infants demonstrate a substantial increase in N250 from 3 to 6 months of age (13). Taken together, these results confirm that the neural substrate for auditory processing is less mature in the younger groups of both full-term and preterm infants.…”

Section: Discussionsupporting

confidence: 82%

“…To estimate gains in neural maturation, we carried out periodical clinical assessments and also evaluated the early components of the event-related potentials (ERPs) that are associated with age-related changes in auditory processing. The latency and amplitude of the early speech ERPs change dramatically from 3 to 6 months of life in full-term infants (13,14). These changes are mainly correlated with changes in myelinization, synaptic efficacy, neural connectivity, and the anatomy of the infant's head (15,16).…”

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confidence: 99%

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Language acquisition in premature and full-term infants

Peña

Pittaluga

Mehler

2010

Proc. Natl. Acad. Sci. U.S.A.

144

122

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We tested healthy preterm (born near 28 ± 2 weeks of gestational age) and full-term infants at various different ages. We compared the two populations on the development of a language acquisition landmark, namely, the ability to distinguish the native language from a rhythmically similar one. This ability is attained 4 months after birth in healthy full-term infants. We measured the induced gamma-band power associated with passive listening to (i) the infants' native language (Spanish), (ii) a rhythmically close language (Italian), and (iii) a rhythmically distant language (Japanese) as a marker of gains in language discrimination. Preterm and full-term infants were matched for neural maturation and duration of exposure to broadcast speech. We found that both full-term and preterm infants only display a response to native speech near 6 months after their term age. Neural maturation seems to constrain advances in speech discrimination at early stages of language acquisition.gamma-band oscillations | preterm infant | speech | rhythm | development H ow much do healthy immature brains gain from exposure to broadcast speech? Unfortunately, very few studies have investigated the interaction between experience and brain maturation in healthy premature infants during the early stages of cognitive development (1). Highly premature infants whose nervous system is immature are confronted with a wide range of external stimulation with unknown consequences on cognitive development. Here, we explore the neural correlate of a landmark of language acquisition, namely, the discrimination of the maternal language from rhythmically similar languages (2).A fair number of behavioral studies have demonstrated that fetuses and neonates distinguish utterances of languages belonging to different rhythmic classes. Indeed, in a recent study, speech perception was examined in 104 low-risk fetuses at 33-41 weeks of gestational age using a familiarization/novelty paradigm (3). One of the experiments shows that fetuses of English-speaking mothers discriminate English from Mandarin, two languages that are very different in rhythm. Moreover, other studies with 2-to 4-day-old neonates and a larger set of language pairs show different responses depending on whether the utterances belong to the same or two different rhythmic classes (2, 4, 5). In other words, once neonates become habituated to utterances of a given language, they show an increase in their nonnutritive sucking rate only when they are exposed to utterances of languages that belong to a different rhythmic class. However, at this age, neonates do not distinguish a switch that occurs between two languages that belong to the same rhythmic class. Other studies have established that it is only after 4 months that full-term infants are able to distinguish utterances in their native language from those of a language that belongs to the same rhythmic class (6, 7). How does this ability develop in healthy highly premature infants? Would preterm infants exposed to their native language for nea...

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Section: Discussionsupporting

confidence: 82%

mentioning

confidence: 99%

Language acquisition in premature and full-term infants

Peña

Pittaluga

Mehler

2010

Proc. Natl. Acad. Sci. U.S.A.

144

122

View full text Add to dashboard Cite

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“…However, such mismatch negativities in newborns and infants usually persist for a longer interval and in a relatively late time window than those typically seen in adult data. Other studies instead reported that mismatch responses in infants are often a positivity between 200 msec and 450 msec, rather than an adult-like negativity (Dehaene-Lambertz & Baillet, 1998;Dehaene-Lambertz & Dehaene, 1994;Friederici, Friedrich, & Weber, 2002;Jing & Benasich, 2006;Leppänen, Eklund, & Lyytinen, 1997;Morr, Shafer, Kreuzer, & Kurtzberg, 2002;Novitski, Huotilainen, Tervaniemi, Näätänen, & Fellman, 2007). For example, Leppänen et al (1997) observed a positive mismatch response (P-MMR) peaking between 250 msec and 350 msec to the pure tone change in newborns.…”

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confidence: 85%

The Development of Mismatch Responses to Mandarin Lexical Tones in Early Infancy

Cheng¹,

Tzeng³

et al. 2013

Developmental Neuropsychology

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This study examined how maturation and the size of deviance affect the development of mismatch responses to Mandarin lexical tones by a multi-deviant oddball paradigm with both large deviant T1/T3 and small deviant T2/T3 pairs in newborns and 6-month-olds. The T1/T3 pair elicited a positive mismatch response (P-MMR) at birth but an adult-like mismatch negativity (MMN) at 6 months of age. For the T2/T3 pair, no significant MMR was seen in newborns, whereas a P-MMR was found when infants are 6 months old. Results suggest that the developmental trajectories of MMRs are dependent on the neural maturation and the discriminability of tonal changes.

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“…Rather the infants exhibited large frontocentral positivity to the deviant tone, and the toddlers showed no difference in event-related potential (ERP) responses between the standard and deviant. A number of other investigations have observed the positive mismatch response (p-MMR) in infants (Dehaene-Lambertz & Dehaene 1994;Leppänen et al 1997;Dehaene-Lambertz & Baillet 1998;Friederici et al 2002;Rivera-Gaxiola et al 2005;Jing & Benasich 2006, He et al 2007Tew et al 2009). In the study by Morr et al (2002), a larger tone difference of 1000 versus 2000 Hz was necessary for a clear MMN-like negativity to be observed in these younger age groups.…”

Section: Introductionmentioning

confidence: 93%