scholarly journals Duration measurement of vocants in infants with Cochlear Implants

2020 ◽  
Author(s):  
Paris Binos
Keyword(s):  
Language Acquisition ◽  
Cochlear Implants ◽  
Crucial Role ◽  
Speech Intelligibility ◽  
Recent Literature ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Prosodic Feature ◽  
Verbal Skills ◽  
Young Infants

Vocants are precursors to speech and are facially neutral. The presence of these speechlike vocalizations was evident during the precursors to mature phonology called “protophones”. The prosodic feature of duration of the nuclei plays a crucial role in the shift of prelexical to mature speech, since speech intelligibility is closely related to the control of duration. The aim of this work is to determine whether cochlear implants (CIs) positively trigger language acquisition and the development of verbal skills. Recent literature findings are compared and discussed with the performance of two Greek congenitally hearing-impaired infants who were matched with three normal-hearing (NH) infants. This work highlighted an important weakness of the prosodic abilities of young infants with CIs.

Second Formant Transitions of Selected Consonant-Vowel Combinations in the Speech of Deaf and Normal-Hearing Children

1976 ◽  
Vol 19 (2) ◽  
pp. 279-289 ◽  
Author(s):  
Randall B. Monsen
Keyword(s):  
Speech Intelligibility ◽  
Normal Subjects ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Acoustic Cues ◽  
Target Frequency ◽  
Second Formant ◽  
Hearing Children

Although it is well known that the speech produced by the deaf is generally of low intelligibility, the sources of this low speech intelligibility have generally been ascribed either to aberrant articulation of phonemes or inappropriate prosody. This study was designed to determine to what extent a nonsegmental aspect of speech, formant transitions, may differ in the speech of the deaf and of the normal hearing. The initial second formant transitions of the vowels /i/ and /u/ after labial and alveolar consonants (/b, d, f/) were compared in the speech of six normal-hearing and six hearing-impaired adolescents. In the speech of the hearing-impaired subjects, the second formant transitions may be reduced both in time and in frequency. At its onset, the second formant may be nearer to its eventual target frequency than in the speech of the normal subjects. Since formant transitions are important acoustic cues for the adjacent consonants, reduced F 2 transitions may be an important factor in the low intelligibility of the speech of the deaf.

scholarly journals Training of Speech Perception in Noise in Pre-Lingual Hearing Impaired Adults With Cochlear Implants Compared With Normal Hearing Adults

2019 ◽  
Vol 40 (3) ◽  
pp. e316-e325 ◽  
Author(s):  
Yossi Bugannim ◽  
Daphne Ari-Even Roth ◽  
Doreen Zechoval ◽  
Liat Kishon-Rabin
Keyword(s):  
Speech Perception ◽  
Cochlear Implants ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Speech Perception In Noise

scholarly journals Cochlear Implantation after Bacterial Meningitis in Infants Younger Than 9 Months

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
B. Y. Roukema ◽  
M. C. Van Loon ◽  
C. Smits ◽  
C. F. Smit ◽  
S. T. Goverts ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Bacterial Meningitis ◽  
Cochlear Implants ◽  
Cochlear Implantation ◽  
Speech Intelligibility ◽  
Pneumococcal Meningitis ◽  
Profound Hearing Loss ◽  
Young Infants ◽  
Key Points ◽  
Auditory Performance

Objective. To describe the audiological, anesthesiological, and surgical key points of cochlear implantation after bacterial meningitis in very young infants.Material and Methods. Between 2005 and 2010, 4 patients received 7 cochlear implants before the age of 9 months (range 4–8 months) because of profound hearing loss after pneumococcal meningitis.Results. Full electrode insertions were achieved in all operated ears. The audiological and linguistic outcome varied considerably, with categories of auditory performance (CAP) scores between 3 and 6, and speech intelligibility rating (SIR) scores between 0 and 5. The audiological, anesthesiological, and surgical issues that apply in this patient group are discussed.Conclusion. Cochlear implantation in very young postmeningitic infants is challenging due to their young age, sequelae of meningitis, and the risk of cochlear obliteration. A swift diagnostic workup is essential, specific audiological, anesthesiological, and surgical considerations apply, and the outcome is variable even in successful implantations.

scholarly journals Production of Greek vowels by hearing-impaired children

2020 ◽  
Author(s):  
Elina Nirgianaki ◽  
Maria Bitzanaki
Keyword(s):  
Hearing Loss ◽  
Cochlear Implants ◽  
High Dimension ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Acoustic Characteristics ◽  
Significant Difference ◽  
Impaired Group ◽  
Impaired Children ◽  
Hearing Impaired Children

The present study investigates the acoustic characteristics of Greek vowels produced by hearing-impaired children with profound prelingual hearing loss and cochlear implants. The results revealed a significant difference between vowels produced by hearingimpaired children and those produced by normal-hearing ones in terms of duration. Stressed vowels were significantly longer than non-stressed for both groups, while F0, F1 and F2 did not differ significantly between the two groups for any vowel, with the exception of /a/, which had significantly higher F1 when produced by hearingimpaired children. Acoustic vowel spaces were similar for the two groups but shifted towards higher frequencies in the low-high dimension and somehow reduced in the front-back dimension for the hearing-impaired group.

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