About this trial
This project will apply transcranial direct current stimulation (tDCS) to multiple brain areas to evaluate the effects as a potential treatment for laryngeal dystonia (formerly spasmodic dysphonia).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Participants must be clinically evaluated for the diagnosis of LD or have the proof of LD diagnosis. (Not applicable for control participants)
No other known or history of speech, voice disorder other than LD.
Provision of signed and dated informed consent form.
Stated willingness to comply with all study procedures and availability for the duration of the study
Disqualifiers
All individuals who do not meet the above mentioned criteria are excluded from the study.
Subjects with a history of epilepsy or depression or is claustrophobic.
Trial design
Single group
Treatments tested in this trial
Starstim system
DeviceTranscranial direct current stimulation (tDCS)
Treatment groups
Trial outcomes
Primary outcomes
Change in Cepstral peak prominence (CPP)
Cepstral peak prominence (CPP) as a robust objective measure of voice quality in the active, sham and no stimulation conditions.
Consensus Auditory-Perceptual Evaluation of Voice (CAPE-V)
Its primary purpose is to describe the severity of auditory-perceptual attributes of a voice problem, in a way that can be communicated among clinicians
Sponsors and contacts
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Yale University
Lead sponsor
National Spasmodic Dysphonia Association
Collaborator