Newborns’ neural processing of native vowels reveals directional asymmetries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081740%3A_____%2F21%3A00549660" target="_blank" >RIV/68081740:_____/21:00549660 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11150/21:10436556 RIV/00216208:11210/21:10436556 RIV/00179906:_____/21:10436556

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1878929321001134" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1878929321001134</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.dcn.2021.101023" target="_blank" >10.1016/j.dcn.2021.101023</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Newborns’ neural processing of native vowels reveals directional asymmetries

Popis výsledku v původním jazyce

Prenatal learning of speech rhythm and melody is well documented. Much less is known about the earliest acquisition of segmental speech categories. We tested whether newborn infants perceive native vowels, but not nonspeech sounds, through some existing (proto-)categories, and whether they do so more robustly for some vowels than for others. Sensory event-related potentials (ERP), and mismatch responses (MMR), were obtained from 104 neonates acquiring Czech. The ERPs elicited by vowels were larger than the ERPs to nonspeech sounds, and reflected the differences between the individual vowel categories. The MMRs to changes in vowels but not in nonspeech sounds revealed left-lateralized asymmetrical processing patterns: a change from a focal [a] to a nonfocal [epsilon], and the change from short [epsilon] to long [epsilon:] elicited more negative MMR responses than reverse changes. Contrary to predictions, we did not find evidence of a developmental advantage for vowel length contrasts (supposedly most readily available in utero) over vowel quality contrasts (supposedly less salient in utero). An explanation for these asymmetries in terms of differential degree of prior phonetic warping of speech sounds is proposed. Future studies with newborns with different language backgrounds should test whether the prenatal learning scenario proposed here is plausible.

Název v anglickém jazyce

Newborns’ neural processing of native vowels reveals directional asymmetries

Popis výsledku anglicky

Prenatal learning of speech rhythm and melody is well documented. Much less is known about the earliest acquisition of segmental speech categories. We tested whether newborn infants perceive native vowels, but not nonspeech sounds, through some existing (proto-)categories, and whether they do so more robustly for some vowels than for others. Sensory event-related potentials (ERP), and mismatch responses (MMR), were obtained from 104 neonates acquiring Czech. The ERPs elicited by vowels were larger than the ERPs to nonspeech sounds, and reflected the differences between the individual vowel categories. The MMRs to changes in vowels but not in nonspeech sounds revealed left-lateralized asymmetrical processing patterns: a change from a focal [a] to a nonfocal [epsilon], and the change from short [epsilon] to long [epsilon:] elicited more negative MMR responses than reverse changes. Contrary to predictions, we did not find evidence of a developmental advantage for vowel length contrasts (supposedly most readily available in utero) over vowel quality contrasts (supposedly less salient in utero). An explanation for these asymmetries in terms of differential degree of prior phonetic warping of speech sounds is proposed. Future studies with newborns with different language backgrounds should test whether the prenatal learning scenario proposed here is plausible.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

50101 - Psychology (including human - machine relations)

Projekt

<a href="/cs/project/GA18-01799S" target="_blank" >GA18-01799S: Vliv akcentu mluvčího na osvojování si hlásek mateřského jazyka</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Developmental Cognitive Neuroscience

ISSN

1878-9293

e-ISSN

1878-9307

Svazek periodika

52

Číslo periodika v rámci svazku

prosinec

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

101023

Kód UT WoS článku

000712521000004

EID výsledku v databázi Scopus

2-s2.0-85118124554