Spastic Dysphonia. II. Comparison with Essential (Voice) Tremor and Other Neurologic and Psychogenic Dysphonias

Aronson, Arnold; Brown, Joe R.; Litin, Edward M.; Pearson, John

doi:10.1044/jshd.3303.219

Cited by 125 publications

(56 citation statements)

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“…Although 25 to 30 % of patients presented tremor 1 , no tremor was found in our SD patients. In the past SD was thought to be a psychogenic disorder, but Aronson 18,19 reported no difference between SD patients and normal subjects using psychiatric tests. Interestingly we found 5 patients with mildly elevated rest activity in TA muscles which was interpreted as psychogenic dysphonia.…”

Section: Discussionmentioning

confidence: 99%

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Laryngeal electromyography in movement disorders: preliminary data

Kimaid¹,

Quagliato²,

Crespo

et al. 2004

Arq. Neuro-Psiquiatr.

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-This study describes preliminary laryngeal electromyography (LEMG) data and botulinum toxin treatment in patients with dysphonia due to movement disorders. Twenty-five patients who had been clinically selected for botulinum toxin administration were examined, 19 with suspected laryngeal dystonia or spasmodic dysphonia (SD), 5 with vocal tremor, and 1 with Gilles de la Tourette syndrome (GTS). LEMG evaluations were performed before botulinum toxin administration using monopolar electrodes. Electromyography was consistent with dystonia in 14 patients and normal in 5, and differences in frequency suggesting essential tremor in 3 and Parkinson tremors in 2. The different LEMG patterns and significant improvement in our patients from botulinum toxin therapy has led us to perform laryngeal electromyography as a routine in UNICAMP movement disorders ambulatory.

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Section: Discussionmentioning

confidence: 99%

“…After Ardran et al 22 , other authors have studied vocal tremor using LEMG 1,19,23 . In ET patients, LEMG generally shows normal activity at rest and 4-12 Hz muscle rhythm tremor during sustained phonation 23 .…”

Section: Discussionmentioning

confidence: 99%

Laryngeal electromyography in movement disorders: preliminary data

Kimaid¹,

Quagliato²,

Crespo

et al. 2004

Arq. Neuro-Psiquiatr.

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“…The first diagnostic reference to pitch breaks was Aronson, 1968. Over the past 20 years pitch breaks have continued to form one of the diagnostic features of SD (e.g., Ludlow, 1988;Whurr et al, 1993).…”

Section: Analysis 1: Perception Of Severity and Distribution Of Pathomentioning

confidence: 99%

Cross-linguistic study of vocal pathology: perceptual features of spasmodic dysphonia in French-speaking subjects

Lorch

Whurr

2003

Journal of Multilingual Communication Disorders

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Clinical characterisation of Spasmodic Dysphonia of the adductor type (SD) in French speakers by Klap and colleagues (1993) appears to differ from that of SD in English. This perceptual analysis aims to describe the phonetic features of French SD. A video of 6 French speakers with SD supplied by Klap and colleagues was analysed for frequency of phonatory breaks, pitch breaks, harshness, creak, breathiness and falsetto voice, rate of production, and quantity of speech output. In contrast to English SD, the French speaking SD patients demonstrated no evidence pitch breaks, but phonatory breaks, harshness and breathiness were prominent features. This verifies the French authors' (1993) clinical description. These findings suggest that phonetic properties of a specific language may affect the manifestation of pathology in neurogenic voice disorders.

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“…These laryngeal movements are often times followed by a tremor of the head and limbs 7 . Tremor may be present only during speech or may happen also during rest.…”

Section: Editorialmentioning

confidence: 99%