Spasmodic dysphonia: introductory phonetic analyses

Reid, Eric W; Nobriga, Christina V.

doi:10.1080/02699206.2022.2096483

Cited by 3 publications

(1 citation statement)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ADSD is a rare voice disorder affecting voice production during speech. The primary symptoms include intermittent voice breaks and effortful phonation, and significantly impact the life and social quality of ADSD patients [24,25]. Currently, different from other types of voice disorders, ADSD is most commonly treated with botulinum toxin type A injection into the thyroarytenoid muscle.…”

Section: Discussionmentioning

confidence: 99%

A Novel Acoustic Evaluation Method for the Diagnosis of Adductor Spasmodic Dysphonia

Liu,

Ji,

Fang

et al. 2023

Folia Phoniatr Logop

View full text Add to dashboard Cite

Introduction: Adductor spasmodic dysphonia (ADSD) is characterized by involuntary laryngeal muscle spasms. Due to the lack of a quantitative evaluation method, most measurements have demonstrated difficulty in validity and reliability for diagnosing ADSD. This study aimed to establish a novel indicator for ADSD and determine its diagnostic effects. Methods: We investigated 98 voice samples from 49 patients with ADSD and 49 healthy subjects. A sustained vowel was recorded by a high-definition audio recorder. Voice samples underwent regular acoustic evaluation and a novel global dimension method. Global dimension (GD), Jitter, Shimmer, HNR, Frequency shift, and CPPS were measured for both groups. Results: Statistical analysis revealed that the global dimension method effectively differentiated ADSD patients from healthy subjects (P<0.001, D’>0.8). Subsequent multiclass receiver operating characteristic analysis demonstrated that GD possessed the most significant classification accuracy (AUC = 0.988) compared with other acoustic parameters. Conclusion: GD was an effective metric for objective differentiation between ADSD patients and healthy subjects. This metric could assist clinicians in the diagnosis of ADSD patients.

show abstract

Section: Discussionmentioning

confidence: 99%

A Novel Acoustic Evaluation Method for the Diagnosis of Adductor Spasmodic Dysphonia

Liu,

Ji,

Fang

et al. 2023

Folia Phoniatr Logop

View full text Add to dashboard Cite

show abstract

Demographic and clinical characteristics of our patients diagnosed with laryngeal dystonia

Asya,

Kavak,

Özden

et al. 2024

Eur Arch Otorhinolaryngol

View full text Add to dashboard Cite

Purpose Laryngeal dystonia (LD) is a focal dystonia affecting laryngeal musculature with no known etiology or cure. The present study evaluated the sociodemographic and clinical features of patients diagnosed with LD. Materials and Methods All patients diagnosed with LD at our University Hospital’s Ear, Nose, and Throat Department between January 2017 and July 2023 were retrospectively analyzed. The study included 43 patients. Results Out of the 43 patients, 19 (44%) were male. At the time of diagnosis, the mean age of the patients was 35.1 years (ranging from 17 to 65 years). The mean elapsed time between the first symptom onset and the first diagnosis was 49.2 months (min. 4 months, max. 240 months). Of the participants, 94% had adductor-type LD. None of the patients had a family history of LD. Of the patients, 9 (20%) experienced a life-altering event or trauma just before the onset of symptoms. All patients who consumed alcohol reported symptom relief with alcohol intake. A total of 67.6% of patients stated that their symptoms were triggered by stress. All of our patients received at least one Botulinum toxin injection, with an average of 2.75 dosages per patient. Conclusion The gender distribution was approximately equitable between males and females. There was a tendency for men to receive a diagnosis earlier than women following the manifestation of symptoms. A significant number of patients associate the emergence of their symptoms with a stressful event or traumatic experience. This study represents the initial investigation into the sociodemographic characteristics of patients within the Turkish population.

show abstract

Adductor Laryngeal Dystonia Versus Muscle Tension Dysphonia: Examining the Utility of Automated Acoustic Analysis to Detect Task Dependency as a Distinguishing Feature

Roy,

Awan,

Jennings

et al. 2024

J Speech Lang Hear Res

View full text Add to dashboard Cite

Objective: Differentiating adductor laryngeal dystonia (ADLD) and primary muscle tension dysphonia (pMTD) can be challenging. Unlike pMTD, ADLD is described as “task-dependent” with voiced phonemes purportedly provoking greater sign expression than voiceless phonemes. We evaluated the ability of two automated acoustic measures, the Cepstral Spectral Index of Dysphonia (CSID) and creak, to detect task dependency and to discriminate ADLD and pMTD. Method: CSID, % creak, and listener ratings of dysphonia severity were obtained from audio recordings of patients with ADLD ( n = 29) or pMTD ( n = 33) reading two sentences loaded with either voiced or voiceless phonemes. Results: Group × Sentence Type interaction effects confirmed that both “normalized” CSID and % creak detected task-dependent sign expression in ADLD (i.e., worse symptoms on the voiced- vs. voiceless-loaded sentence). However, a stepwise binary logistic regression analysis with group (ADLD vs. pMTD) as the dependent variable and % creak and normalized CSID variables (voiced, voiceless, and voiced vs. voiceless difference) as covariates revealed that the normalized CSID voiceless-laden sentence z score was the only significant predictor of group membership. Estimates of diagnostic precision from the normalized CSID voiceless sentence z scores were superior to % creak or listener ratings. Finally, the CSID possessed the strongest correlations with listener severity ratings regardless of group or sentence type. Conclusions: Although both normalized CSID and % creak detected task-dependent performance as a distinguishing feature of ADLD, a CSID profile wherein (a) the voiceless sentence z score was less severe than the voiced sentence and (b) the normalized voiceless sentence z score was within approximately 2 SD s (or less) of typical expectations provided the best estimates of diagnostic precision. Automated acoustic measures such as the CSID and creak provide useful information to objectively discriminate ADLD and pMTD.

show abstract

Spasmodic dysphonia: introductory phonetic analyses

Cited by 3 publications

References 41 publications

A Novel Acoustic Evaluation Method for the Diagnosis of Adductor Spasmodic Dysphonia

A Novel Acoustic Evaluation Method for the Diagnosis of Adductor Spasmodic Dysphonia

Demographic and clinical characteristics of our patients diagnosed with laryngeal dystonia

Adductor Laryngeal Dystonia Versus Muscle Tension Dysphonia: Examining the Utility of Automated Acoustic Analysis to Detect Task Dependency as a Distinguishing Feature

Contact Info

Product

Resources

About