Relationship Between Masking Levels and Phonatory Stability in Normal-Speaking Women

Ferrand, Carole T.

doi:10.1016/j.jvoice.2005.04.004

Cited by 17 publications

(31 citation statements)

References 18 publications

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“…The children in the study demonstrated increased phonatory stability like adult subjects as reported in the earlier studies of [4,8] done on adult population. The increased phonatory stability in children which was reflected by reduced shimmer, jitter and increased HNR values can also be attributed to the increased vocal effort and intensity as a part of compensatory mechanism to improve efficiency of kinaesthetic feedback in regulating phonatory stability under masking condition.…”

Section: Discussionsupporting

confidence: 78%

“…Phonatory stability refers to the steadiness and periodicity of vocal fold vibration, which is dependent on the laryngeal system maintaining relatively constant levels of muscular force during a sustained phonation [4]. The acoustic dimensions such as jitter, shimmer and harmonicto-noise ratio (HNR) have been shown to reflect the phonatory stability of vocal fold vibration.…”

Section: Introductionmentioning

confidence: 99%

“…Ferrand et al [4] studied phonatory stability in adult women subjects under auditory masking condition and found that most of the subjects showed increased phonatory stability when the auditory feedback was disrupted. Kumar et al [8] studied the effect of auditory masking on phonatory stability in adult male and female subjects and found that most of their subjects, both male and female demonstrated increased phonatory stability.…”

Section: Introductionmentioning

confidence: 99%

“…Kinaesthetic feedback, a complex neuromuscular reflex system may also play an important role in vocal motor control and phonatory stability. This intrinsic laryngeal reflex system may be particularly active when auditory feedback is disrupted or lacking, thus engaging the kinaesthetic system more efficiently when auditory-laryngeal control system is prevented from operating efficiently [4].…”

Section: Introductionmentioning

confidence: 99%

“…A complex neuromuscular reflex system known as kinaesthetic feedback has been reported to be particularly active in controlling phonatory stability when auditory feedback is disrupted [4]. This proposes the need to further investigate this phenomenon as to whether children show similar patterns of phonatory stability under auditory masking since their neuromotor systems which are still at developmental stage, less mature in terms of learned experience and hence would be less resistant than adults to altered auditory feedback.…”

Section: Introductionmentioning

confidence: 99%

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The Role of Auditory and Kinaesthetic Feedback Mechanisms on Phonatory Stability in Children

Kumar

Azeem

Choudhary

et al. 2012

Indian J Otolaryngol Head Neck Surg

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Auditory feedback plays an important role in phonatory control. When auditory feedback is disrupted, various changes are observed in vocal motor control. Vocal intensity and fundamental frequency (F0) levels tend to increase in response to auditory masking. Because of the close reflexive links between the auditory and phonatory systems, it is likely that phonatory stability may be disrupted when auditory feedback is disrupted or altered. However, studies on phonatory stability under auditory masking condition in adult subjects showed that most of the subjects maintained normal levels of phonatory stability. The authors in the earlier investigations suggested that auditory feedback is not the sole contributor to vocal motor control and phonatory stability, a complex neuromuscular reflex system known as kinaesthetic feedback may play a role in controlling phonatory stability when auditory feedback is disrupted or lacking. This proposes the need to further investigate this phenomenon as to whether children show similar patterns of phonatory stability under auditory masking since their neuromotor systems are still at developmental stage, less mature and are less resistant to altered auditory feedback than adults. A total of 40 normal hearing and speaking children (20 male and 20 female) between the age group of 6 and 8 years participated as subjects. The acoustic parameters such as shimmer, jitter and harmonicto-noise ratio (HNR) were measures and compared between no masking condition (0 dB ML) and masking condition (90 dB ML). Despite the neuromotor systems being less mature in children and less resistant than adults to altered auditory feedback, most of the children in the study demonstrated increased phonatory stability which was reflected by reduced shimmer, jitter and increased HNR values. This study implicates that most of the children demonstrate well established patterns of kinaesthetic feedback, which might have allowed them to maintain normal levels of vocal motor control even in the presence of disturbed auditory feedback. Hence, it can be concluded that children also exhibit kinaesthetic feedback mechanism to control phonatory stability when auditory feedback is disrupted which in turn highlights the importance of kinaesthetic feedback to be included in the therapeutic/intervention approaches for children with hearing and neurogenic speech deficits.

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Section: Discussionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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