From Ear to Cortex

2002 ◽  
Vol 33 (4) ◽  
pp. 237-252 ◽  
Author(s):  
Susan Nittrouer
Keyword(s):  
Speech Perception ◽  
Young Child ◽  
Language Learning ◽  
Intervention Strategies ◽  
Developmental Changes ◽  
Learning Problems ◽  
Basic Unit ◽  
Language Experience ◽  
Acoustic Speech Signal ◽  
Perceptual Changes

Phoneme-sized phonetic segments are often defined as the most basic unit of language organization. Two common inferences made from this description are that there are clear correlates to phonetic segments in the acoustic speech stream, and that humans have access to these segments from birth. In fact, well-replicated studies have shown that the acoustic signal of speech lacks invariant physical correlates to phonetic segments, and that the ability to recognize segmental structure is not present from the start of language learning. Instead, the young child must learn how to process the complex, generally continuous acoustic speech signal so that phonetic structure can be derived. This paper describes and reviews experiments that have revealed developmental changes in speech perception that accompany improvements in access to phonetic structure. In addition, this paper explains how these perceptual changes appear to be related to other aspects of language development, such as syntactic abilities and reading. Finally, evidence is provided that these critical developmental changes result from adequate language experience in naturalistic contexts, and accordingly suggests that intervention strategies for children with language learning problems should focus on enhancing language experience in natural contexts.

scholarly journals Speech perception at birth: The brain encodes fast and slow temporal information

2020 ◽  
Vol 6 (30) ◽  
pp. eaba7830
Author(s):  
Laurianne Cabrera ◽  
Judit Gervain
Keyword(s):  
Infrared Spectroscopy ◽  
Speech Perception ◽  
Human Brain ◽  
Language Learning ◽  
Auditory Processing ◽  
Near Infrared ◽  
Acoustic Cues ◽  
Language Experience ◽  
Brain Responses ◽  
The Brain

Speech perception is constrained by auditory processing. Although at birth infants have an immature auditory system and limited language experience, they show remarkable speech perception skills. To assess neonates’ ability to process the complex acoustic cues of speech, we combined near-infrared spectroscopy (NIRS) and electroencephalography (EEG) to measure brain responses to syllables differing in consonants. The syllables were presented in three conditions preserving (i) original temporal modulations of speech [both amplitude modulation (AM) and frequency modulation (FM)], (ii) both fast and slow AM, but not FM, or (iii) only the slowest AM (<8 Hz). EEG responses indicate that neonates can encode consonants in all conditions, even without the fast temporal modulations, similarly to adults. Yet, the fast and slow AM activate different neural areas, as shown by NIRS. Thus, the immature human brain is already able to decompose the acoustic components of speech, laying the foundations of language learning.

scholarly journals Lexical learning shapes the development of speech perception until late adolescence

2019 ◽  
Author(s):  
Matthew H. Davis ◽  
Samuel Evans ◽  
Kathleen McCarthy ◽  
Lindsey Evans ◽  
Anastasia Giannakopoulou ◽  
...  
Keyword(s):  
Speech Perception ◽  
Language Learning ◽  
Speech Sound ◽  
Late Adolescence ◽  
Perceptual Task ◽  
Critical Periods ◽  
Language Experience ◽  
Age Related ◽  
Cartoon Characters ◽  
Perceptual Acuity

The role of neurobiologically-constrained critical periods for language learning remains controversial. We provide new evidence for critical periods by examining speech sound processing across the lifespan. We tested perceptual acuity for minimal word-word (e.g. bear-pear), and word-pseudoword (e.g. bag-pag) pairs using trial-unique audio-morphed speech tokens. Participants (N=1537) performed a 3-interval, 2-alternative forced-choice perceptual task indicating which of two cartoon characters said a referent word correctly. We adaptively reduced the contrastive acoustic cues in speech tokens to measure the Proportion of Acoustic Difference Required for Identification (PADRI) at 79.4% correct. Results showed effects of age, lexical context, and language experience on perceptual acuity. However, for native-listeners responding to word-word trials, age-related improvements stopped at 16.7 years. This finding suggests a role for continued lexical experience in shaping perceptual acuity for spoken words until late adolescence consistent with interactive models of speech perception and critical periods.

scholarly journals Speech perception at birth: the brain encodes fast and slow temporal information

2019 ◽  
Author(s):  
Laurianne Cabrera ◽  
Judit Gervain
Keyword(s):  
Infrared Spectroscopy ◽  
Speech Perception ◽  
Language Learning ◽  
Auditory Processing ◽  
Near Infrared ◽  
Acoustic Cues ◽  
Language Experience ◽  
Brain Responses ◽  
Frequency Modulations ◽  
The Brain

Speech perception is constrained by auditory processing. Although at birth, infants have an immature auditory system and limited language experience, they show remarkable speech perception skills. To assess neonates’ ability to process the complex acoustic cues of speech, we combined near-infrared spectroscopy (NIRS) and electroencephalography (EEG) to measure brain responses to syllables differing in consonants. The syllables were presented in three conditions preserving (i) original temporal modulations of speech (both amplitude and frequency modulations, AM/FM), (ii) both fast and slow AM, but not FM, or (iii) only the slowest AM (&lt; 8 Hz). EEG responses indicate that neonates are able to encode consonants in all conditions, even without the fast temporal modulations, similarly to adults. Yet, the fast and slow AM activate different neural areas, as shown by NIRS. Thus, the immature human brain is already able to decompose the acoustic components of speech, laying the foundations of language learning.

scholarly journals Children’s sensitivity to phonological and semantic cues during noun class learning: evidence for a phonological bias

2018 ◽  
Author(s):  
Jennifer Culbertson ◽  
Hanna Jarvinen ◽  
Frances Haggarty ◽  
Kenny Smith
Keyword(s):  
Language Acquisition ◽  
Language Learning ◽  
Classification Systems ◽  
Developmental Changes ◽  
Artificial Language ◽  
Phonological Information ◽  
Semantic Cues ◽  
Artificial Language Learning ◽  
Cue Use ◽  
Noun Class

Previous research on the acquisition of noun classification systems (e.g., grammatical gender) has found that child learners rely disproportionately on phonological cues to determine the class of a new noun, even when competing semantic cues are more reliable in their language. Culbertson, Gagliardi, and Smith (2017) argue that this likely results from the early availability of phonological information during acquisition; learners base their initial representations on formal features of nouns, only later integrating semantic cues from noun meanings . Here, we use artificial language learning experiments to show that early availability drives cue use in children (67 year-olds). However, we also find evidence of developmental changes in sensitivity to semantics; when both cues types are simultaneously available, children are more likely to rely on phonology than adults. Our results suggest that early availability and a bias favoring phonological cues both contribute to children’s over-reliance on phonology in natural language acquisition.

Lending Ears to EFL Learners: Language Difficulties

2011 ◽  
Vol 28 (1) ◽  
pp. 33-46 ◽  
Author(s):  
Sahail M. Asassfeh ◽  
Yousef M. Al-Shaboul ◽  
Wael Zuraiq ◽  
Sabri Alshboul
Keyword(s):  
Foreign Language ◽  
Language Learning ◽  
Academic Major ◽  
Learning Problems ◽  
Grade Point ◽  
Efl Learners ◽  
Basic Language ◽  
Language Difficulties ◽  
English Major ◽  
English Major Undergraduates

This study investigates the main English as a Foreign Language (EFL) learning difficulties Jordanian English-major undergraduates encounter from their perspective. For this purpose a questionnaire was developed and administered to 270 (50 male and 220 female) participants. The study addressed the four basic language skills (listening, speaking, reading and writing). The independent variables included gender, grade point average (GPA), and academic major. Ordered according to their difficulty, the skills were speaking, reading, writing and listening respectively. Some specific language learning problems are also discussed. Appropriate conclusions and recommendations are provided accordingly.

Interpreting phonological memory performance in bilinguals

2017 ◽  
Vol 38 (6) ◽  
pp. 1333-1336
Author(s):  
Margarita Kaushanskaya
Keyword(s):  
Language Learning ◽  
Learning Outcomes ◽  
Memory Performance ◽  
Bilingual Children ◽  
Phonological Memory ◽  
Language Experience ◽  
Early Language ◽  
Central Hypothesis ◽  
The Relationship

The central hypothesis in the Pierce, Genesee, Delcenserie, and Morgan article is that phonological memory is key to explaining the relationship between early language experience (more specifically, less and more optimal ends of the language-experience continuum) and language learning outcomes. One piece of evidence offered is that phonological memory skills are enhanced by bilingualism, with bilingualism representing enriched experience. Here, I propose that data from bilingual children may contradict Pierce et al.’s central hypothesis, rather than support it.

Exploring EFL Learners' Preferences, Perceived Needs, and Perceptions about Language Learning Strategies

2016 ◽  
Vol 7 (6) ◽  
pp. 1128
Author(s):  
Maryam Alsadat Mortazavi ◽  
Hamed Barjesteh
Keyword(s):  
Language Learning ◽  
Learning Strategies ◽  
English Language ◽  
Language Education ◽  
Language Experience ◽  
Efl Learners ◽  
Perceived Needs ◽  
Academic Level ◽  
Significant Difference ◽  
The Impact

This study was to investigate the impact of language experience and academic level on the perceived needs of Iranian undergraduate EFL learners. Two groups of Iranian TEFL female students (freshmen and senior) were compared regarding their preferences, perceived needs and perceptions of different activity types about language learning. To collect data, Sihong's (2007) needs analysis questionnaire for English language needs was utilized. Thirty two freshman and twenty nine senior MA students with the age range of 25-35 were considered as the subject of this study. They were asked to fill out the questionnaire through email and they were given the confidence that the collected data would remain anonymous. Results revealed that there was a significant difference between freshman and senior EFL learners in their preferences, needs and opinions about various types of activities, and various aspects of language education. The findings also revealed that freshmen students required more practice in grammar and pronunciation than vocabulary for them. The most difficult components of language were pronunciation, vocabulary and grammar respectively; however, the senior students reported that vocabulary and grammar were the most difficult component of language skill and pronunciation was the least one.

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