Association between Laryngeal Findings and Vocal Qualities in Muscle Tension Dysphonia with Supraglottic Contraction

Ogawa, Makoto; Yoshida, Misao; Watanabe, Ken; Yoshii, Tadashi; Sugiyama, Yoshio; Sasaki, Ryoji; Watanabe, Yûsuke; Kubo, Takeshi

doi:10.3950/jibiinkoka.108.734

Cited by 12 publications

(7 citation statements)

References 9 publications

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“…It was previously reported that a series of voice therapies including humming improved voice qualities in both subjects with functional dysphonia and those with organic dysphonia, as well as in normal subjects [5,10]. Although voice therapy textbooks have described the rationale for using humming [8,9], only a few of these descriptions have been verified based on objective evaluation [12,13].…”

Section: Discussionmentioning

confidence: 99%

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Immediate Effectiveness of Humming on the Supraglottic Compression in Subjects with Muscle Tension Dysphonia

Ogawa

Hosokawa

Yoshida

et al. 2013

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Aims: To verify whether humming corrects supraglottic compression in muscle tension dysphonia (MTD) patients. Methods: We enrolled 23 MTD participants (13 male, 10 female) showing supraglottic compression. Each individual was instructed to perform 3 types of phonation under transnasal laryngofiberscopy: natural phonation, humming phonation without pitch change and subsequent um-hum phonation, i.e. humming with pitch glide up as if agreeing with someone. The degree of supraglottic compression was estimated with 2 parameters. The false vocal fold and anterior-posterior indices (the FVF and AP indices) were calculated by normalizing the lateral width and AP length of the visible vocal cords at phonation normalized to the mean vocal cord length at inspiration, respectively. These indices were compared among the tasks. Results: All the MTD participants but 5 females accomplished decreases in the vocal roughness scores upon the phonatory tasks. The whole MTD group showed significant increases in the FVF and AP indices even after humming without pitch change with a dominance of the AP index. The humming-responsive MTD subgroup showed greater increases in both indices than the humming-resistant subgroup. Conclusion: These data demonstrate that humming corrects both the lateral and AP components of supraglottic compression in most MTD patients.

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Section: Discussionmentioning

confidence: 99%

“…Supraglottic compression is one of these findings. We have previously reported that voice therapies including humming induced a gradual and concomitant improvement in the degree of supraglottic compression as well as the vocal qualities in MTD patients [5]. …”

Section: Introductionmentioning

confidence: 99%

Immediate Effectiveness of Humming on the Supraglottic Compression in Subjects with Muscle Tension Dysphonia

Ogawa

Hosokawa

Yoshida

et al. 2013

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“…Feinstein et al [25] reported that laser resection of the false vocal folds achieved a successful outcome in a patient with ventricular dysphonia. In addition, MTD patients show gradual improvements in the degree of supraglottic compression as well as in voice qualities during voice therapy sessions [26]. Therefore, the correction of supraglottic posture during phonation and subsequent elimination of contact of supraglottic structures may normalize the patterns of EGG waveforms.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of the Computed Analysis of Electroglottographic Signals in Muscle Tension Dysphonia

Hosokawa

Yoshida

Yoshii

et al. 2012

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Objective: To investigate the usefulness of electroglottography (EGG) parameters in the diagnosis and estimation of efficacy of voice therapy for muscle tension dysphonia (MTD). Patients and Methods: Nineteen MTD participants, an equivalent number of dysphonic (‘organic’) patients with vocal fold lesions and as many normal speakers were enrolled. Acoustic (Ac) and EGG signals during sustained phonation were recorded simultaneously. The period and amplitude perturbation quotient of both signals, the closed quotient (CQ) of EGG signals (mean CQ) and its standard deviation (CQSD) were calculated, and subsequently compared among the three groups. These parameters in the MTD group were compared before and after voice therapy. Results: The perturbation measures of both signals in the MTD group were either as high as or significantly higher than those in the organic group or the control group, respectively. Both the Ac and EGG parameters after therapy significantly decreased. The CQSD, but not mean CQ, also decreased after therapy. Conclusion: EGG parameters related to the regularity of vocal fold vibration, but not to the degree of vocal fold contact (mean CQ), are useful for the diagnosis and estimation of voice therapy outcome in MTD.

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“…We previously reported that MTD patients exhibit improved perceptual vocal quality and a reduced degree of supraglottic compression as well as decreased perturbation parameters of both acoustic (Ac) and electroglottographic (EGG) signals and the standard deviation of the contact quotient (CQ) following voice therapy primarily using humming. 4,5 However, because we did not compare therapeutic and nontherapeutic groups, it remains to be confirmed whether these post-therapeutic changes are actually conferred by the humming itself.…”

Section: Introductionmentioning

confidence: 88%

Immediate Effects of Humming on Computed Electroglottographic Parameters in Patients With Muscle Tension Dysphonia

et al. 2014

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Association between Laryngeal Findings and Vocal Qualities in Muscle Tension Dysphonia with Supraglottic Contraction

Cited by 12 publications

References 9 publications

Immediate Effectiveness of Humming on the Supraglottic Compression in Subjects with Muscle Tension Dysphonia

Immediate Effectiveness of Humming on the Supraglottic Compression in Subjects with Muscle Tension Dysphonia

Effectiveness of the Computed Analysis of Electroglottographic Signals in Muscle Tension Dysphonia

Immediate Effects of Humming on Computed Electroglottographic Parameters in Patients With Muscle Tension Dysphonia

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