scholarly journals Functional MRI of Native and Non-native Speech Sound Production in Sequential German-English Bilinguals

2021 ◽  
Vol 15 ◽  
Author(s):  
Miriam Treutler ◽  
Peter Sörös
Keyword(s):  
Language Production ◽  
Sound Production ◽  
Native Speakers ◽  
Inferior Frontal Gyrus ◽  
Speech Sound ◽  
Non Invasive ◽  
English Vowels ◽  
Primary Sensorimotor Cortex ◽  
Native Speech ◽  
Bilingualism And Multilingualism

Bilingualism and multilingualism are highly prevalent. Non-invasive brain imaging has been used to study the neural correlates of native and non-native speech and language production, mainly on the lexical and syntactic level. Here, we acquired continuous fast event-related FMRI during visually cued overt production of exclusively German and English vowels and syllables. We analyzed data from 13 university students, native speakers of German and sequential English bilinguals. The production of non-native English sounds was associated with increased activity of the left primary sensorimotor cortex, bilateral cerebellar hemispheres (lobule VI), left inferior frontal gyrus, and left anterior insula compared to native German sounds. The contrast German > English sounds was not statistically significant. Our results emphasize that the production of non-native speech requires additional neural resources already on a basic phonological level in sequential bilinguals.

scholarly journals Functional MRI of native and non-native speech production in sequential German-English bilinguals

2021 ◽  
Author(s):  
Miriam Treutler ◽  
Peter Sörös
Keyword(s):  
Language Production ◽  
Native Speakers ◽  
Inferior Frontal Gyrus ◽  
Neural Correlates ◽  
Left Inferior Frontal Gyrus ◽  
Non Invasive ◽  
English Vowels ◽  
Native Speech ◽  
Bilingualism And Multilingualism ◽  
Increased Activity

AbstractBilingualism and multilingualism are highly prevalent. Non-invasive brain imaging has been used to study the neural correlates of native (L1) and non-native (L2) speech and language production, mainly on the lexical and syntactic level. Here, we acquired continuous fast event-related FMRI during visually cued overt production of exclusively German and English vowels and syllables. We analyzed data from 13 university students, native speakers of German and sequential English bilinguals. The production of non-native English sounds was associated with increased activity of the left primary sensori-motor cortex, bilateral cerebellar hemispheres (lobule VI), left inferior frontal gyrus, and left anterior insula compared to native German sounds. The contrast German > English sounds was not statistically significant. Our results emphasize that the production of non-native speech requires additional neural resources already on a basic phonological level in sequential bilinguals.

scholarly journals The acoustic characteristics of non-native American English vowels

Linguistica ◽  
2017 ◽  
Vol 57 (1) ◽  
pp. 59-72
Author(s):  
Biljana Čubrović
Keyword(s):  
United States ◽  
Native American ◽  
Native Speakers ◽  
American English ◽  
The United States ◽  
Vowel Quality ◽  
Acoustic Characteristics ◽  
Language Background ◽  
English Vowels ◽  
Native Speech

This study aims at discussing the phonetic property of vowel quality in English, as exercised by both native speakers of General American English (AE) and non-native speakers of General American English of Serbian language background, all residents of the United States. Ten Serbian male speakers and four native male speakers of AE are recorded in separate experiments and their speech analyzed acoustically for any significant phonetic differences, looking into a set of monosyllabic English words representing nine vowels of AE. The general aim of the experiments is to evaluate the phonetic characteristics of AE vowels, with particular attention to F1 and F2 values, investigate which vowels differ most in the two groups of participants, and provide some explanations for these variations. A single most important observation that is the result of this vowel study is an evident merger of three pairs of vowels in the non-native speech: /i ɪ/, /u ʊ/, and /ɛ æ/.

scholarly journals Neural Representation of Articulable and Inarticulable Novel Sound Contrasts: The Role of the Dorsal Stream

2020 ◽  
Vol 1 (3) ◽  
pp. 339-364
Author(s):  
David I. Saltzman ◽  
Emily B. Myers
Keyword(s):  
Right Hemisphere ◽  
Inferior Frontal Gyrus ◽  
Speech Sound ◽  
Dorsal Stream ◽  
Brain Regions ◽  
Sine Wave ◽  
Neural Representation ◽  
Middle Temporal Gyrus ◽  
Speech Sounds ◽  
Native Speech

The extent that articulatory information embedded in incoming speech contributes to the formation of new perceptual categories for speech sounds has been a matter of discourse for decades. It has been theorized that the acquisition of new speech sound categories requires a network of sensory and speech motor cortical areas (the “dorsal stream”) to successfully integrate auditory and articulatory information. However, it is possible that these brain regions are not sensitive specifically to articulatory information, but instead are sensitive to the abstract phonological categories being learned. We tested this hypothesis by training participants over the course of several days on an articulable non-native speech contrast and acoustically matched inarticulable nonspeech analogues. After reaching comparable levels of proficiency with the two sets of stimuli, activation was measured in fMRI as participants passively listened to both sound types. Decoding of category membership for the articulable speech contrast alone revealed a series of left and right hemisphere regions outside of the dorsal stream that have previously been implicated in the emergence of non-native speech sound categories, while no regions could successfully decode the inarticulable nonspeech contrast. Although activation patterns in the left inferior frontal gyrus, the middle temporal gyrus, and the supplementary motor area provided better information for decoding articulable (speech) sounds compared to the inarticulable (sine wave) sounds, the finding that dorsal stream regions do not emerge as good decoders of the articulable contrast alone suggests that other factors, including the strength and structure of the emerging speech categories are more likely drivers of dorsal stream activation for novel sound learning.

Intelligibility of American English vowels of native and non-native speakers in quiet and speech-shaped noise

2012 ◽  
Vol 16 (1) ◽  
pp. 206-218 ◽  
Author(s):  
CHANG LIU ◽  
SU-HYUN JIN
Keyword(s):  
Processing Time ◽  
Native Speakers ◽  
American English ◽  
Noise Background ◽  
English Vowels ◽  
Native Speech

This study examined intelligibility of twelve American English vowels produced by English, Chinese, and Korean native speakers in quiet and speech-shaped noise in which vowels were presented at six sensation levels from 0 dB to 10 dB. The slopes of vowel intelligibility functions and the processing time for listeners to identify vowels were dependent on speakers’ language backgrounds and non-native speakers’ vowel intelligibility in quiet. These results indicated that noise background affected non-native speakers’ vowel intelligibility more greatly than native speakers, possibly due to the acoustic deviations in non-native speech and lack of listeners’ experience to non-native produced speech.

Reading Risk in Children With Speech Sound Disorder: Prevalence, Persistence, and Predictors

2020 ◽  
Vol 63 (11) ◽  
pp. 3714-3726
Author(s):  
Sherine R. Tambyraja ◽  
Kelly Farquharson ◽  
Laura Justice
Keyword(s):  
At Risk ◽  
Sound Production ◽  
Speech Therapy ◽  
Speech Sound ◽  
Reading Difficulties ◽  
School Age Children ◽  
Speech Sound Disorder ◽  
Word Decoding ◽  
School Year ◽  
School Based

Purpose The purpose of this study was to determine the extent to which school-age children with speech sound disorder (SSD) exhibit concomitant reading difficulties and examine the extent to which phonological processing and speech production abilities are associated with increased likelihood of reading risks. Method Data were obtained from 120 kindergarten, first-grade, and second-grade children who were in receipt of school-based speech therapy services. Children were categorized as being “at risk” for reading difficulties if standardized scores on a word decoding measure were 1 SD or more from the mean. The selected predictors of reading risk included children's rapid automatized naming ability, phonological awareness (PA), and accuracy of speech sound production. Results Descriptive results indicated that just over 25% of children receiving school-based speech therapy for an SSD exhibited concomitant deficits in word decoding and that those exhibiting risk at the beginning of the school year were likely to continue to be at risk at the end of the school year. Results from a hierarchical logistic regression suggested that, after accounting for children's age, general language abilities, and socioeconomic status, both PA and speech sound production abilities were significantly associated with the likelihood of being classified as at risk. Conclusions School-age children with SSD are at increased risk for reading difficulties that are likely to persist throughout an academic year. The severity of phonological deficits, reflected by PA and speech output, may be important indicators of subsequent reading problems.

Une nouvelle méthode de mesure de la fonction d'aire du conduit vocal : cas des voyelles

2005 ◽  
Vol 83 (7) ◽  
pp. 721-737
Author(s):  
H Teffahi ◽  
B Guerin ◽  
A Djeradi
Keyword(s):  
Measurement Method ◽  
Cross Correlation ◽  
Sound Production ◽  
Linear Prediction ◽  
Vocal Tract ◽  
Random Sequence ◽  
Speech Sound ◽  
Acoustic Properties ◽  
External Excitation ◽  
White Noise Excitation

Knowledge of vocal tract area functions is important for the understanding of phenomena occurring during speech production. We present here a new measurement method based on the external excitation of the vocal tract with a known pseudo-random sequence, where the area function is obtained by a linear prediction analysis applied to the cross-correlation between the sequence and the signal measured at the lips. The advantages of this method over methods based on sweep-tones or white noise excitation are (1) a much shorter measurement time (about 100 ms) and (2) the possibility of speech sound production during the measurement. This method has been checked against classical methods through systematic comparisons on a small corpus of vowels. Moreover, it has been verified that simultaneous speech sound production does not perturb significantly the measurements. This method should thus be a very helpful tool for the investigation of the acoustic properties of the vocal tract in various cases for vowels.

scholarly journals Speech Sound Production in 2-Year-Olds Who Are Hard of Hearing

2014 ◽  
Vol 23 (2) ◽  
pp. 91-104 ◽  
Author(s):  
Sophie E. Ambrose ◽  
Lauren M. Unflat Berry ◽  
Elizabeth A. Walker ◽  
Melody Harrison ◽  
Jacob Oleson ◽  
...  
Keyword(s):  
Socioeconomic Status ◽  
Hearing Loss ◽  
Hearing Aids ◽  
Hard Of Hearing ◽  
Sound Production ◽  
Speech Sound ◽  
Linguistic Variables ◽  
Vowel Production ◽  
Severe Hearing Loss ◽  
Children's Speech

Purpose The purpose of the study was to (a) compare the speech sound production abilities of 2-year-old children who are hard of hearing (HH) to children with normal hearing (NH), (b) identify sources of risk for individual children who are HH, and (c) determine whether speech sound production skills at age 2 were predictive of speech sound production skills at age 3. Method Seventy children with bilateral, mild-to-severe hearing loss who use hearing aids and 37 age- and socioeconomic status–matched children with NH participated. Children's speech sound production abilities were assessed at 2 and 3 years of age. Results At age 2, the HH group demonstrated vowel production abilities on par with their NH peers but weaker consonant production abilities. Within the HH group, better outcomes were associated with hearing aid fittings by 6 months of age, hearing loss of less than 45 dB HL, stronger vocabulary scores, and being female. Positive relationships existed between children's speech sound production abilities at 2 and 3 years of age. Conclusion Assessment of early speech sound production abilities in combination with demographic, audiologic, and linguistic variables may be useful in identifying HH children who are at risk for delays in speech sound production.

He who Hesitates: Hesitation Phenomena as Quality Control in Speech Production, Obstacles in Non-Native Speech Perception

2000 ◽  
Vol 182 (3) ◽  
pp. 72-97 ◽  
Author(s):  
Marnie Reed
Keyword(s):  
Quality Control ◽  
Speech Production ◽  
Speech Processing ◽  
Native Speakers ◽  
Spontaneous Speech ◽  
Classification Framework ◽  
Native Speech ◽  
Control Devices ◽  
Content Processing ◽  
Hesitation Phenomena

This study was designed to determine the nature and occurrence of hesitation phenomena in spontaneous speech of native and non-native speakers, and to determine whether and to what extent the hesitation phenomena normal in spontaneous speech pose perception problems for non-native speakers. A quantitative analysis reveals that hesitation phenomena are ubiquitous in both native and non-native speech production. A qualitative analysis based on a content-processing classification framework reveals the function of hesitations. Hesitations act as overt traces of prospective and retrospective speech-processing tasks which function to forestall errors, and to permit detection and repair of errors once they are committed. Hesitations are quality control devices; native and non-native speakers are highly successful utilizing them to forestall errors. However, hesitation phenomena clearly pose perception problems for non-native speakers who show little evidence of recognizing them as such. Like native speakers, non-native speakers produce hesitation phenomena. Unlike native speakers, who edit and filter out the hesitations they hear, non-native speakers attempt to assign meaning to speakers' faulty output or to parenthetical remarks. Hesitations are unpredictable in their frequency or occurrence; failure to provide training in these oral discourse features of connected speech may result in non-native speakers whose speech production vastly outstrips their perception.

scholarly journals Effects of fixed labial orthodontic appliances on speech sound production

2015 ◽  
Vol 86 (3) ◽  
pp. 462-467 ◽  
Author(s):  
Jonathan S. Paley ◽  
George J. Cisneros ◽  
Olivier F. Nicolay ◽  
Etoile M. LeBlanc
Keyword(s):  
Sound Production ◽  
Speech Sound ◽  
Orthodontic Appliances ◽  
Priority Index ◽  
Treatment Priority ◽  
Fixed Appliances ◽  
The Impact

ABSTRACT Objective:  To explore the impact of fixed labial orthodontic appliances on speech sound production. Materials and Methods:  Speech evaluations were performed on 23 patients with fixed labial appliances. Evaluations were performed immediately prior to appliance insertion, immediately following insertion, and 1 and 2 months post insertion. Baseline dental/skeletal variables were correlated with the ability to accommodate the presence of the appliances. Results:  Appliance effects were variable: 44% of the subjects were unaffected, 39% were temporarily affected but adapted within 2 months, and 17% of patients showed persistent sound errors at 2 months. Resolution of acquired sound errors was noted by 8 months post–appliance removal. Maladaptation to appliances was correlated to severity of malocclusion as determined by the Grainger’s Treatment Priority Index. Sibilant sounds, most notably /s/, were affected most often. Conclusions:  (1) Insertion of fixed labial appliances has an effect on speech sound production. (2) Sibilant and stopped sounds are affected, with /s/ being affected most often. (3) Accommodation to fixed appliances depends on the severity of malocclusion.

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