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A Study to Analyze Features of Dysphonia and Tremor in PD Patients to Aid in the Development of an Accurate Diagnostic Tool for Early-Detection of PD


Brief Summary:

This is a web-based study that involves monitoring hallmark symptoms of Parkinson’s Disease
(PD), specifically dysphonia and tremor, using smartphone sensor data. The entire length of
the study will only take 5 minutes, so volunteers will not have to repeatedly contribute
data. The study is made up of 5 short, 10-second long activities, which include sustaining
the short a vowel sound to monitor changes in vocal fundamental frequency and holding a
smartphone in different positions on either side of the body to measure changes in amplitude.
To be a part of this study, volunteers must have an iPhone that is running on the software
iOS 13 or higher, because they will be asked to download a smartphone application from an
online App Store.


Inclusion Criteria:

– Clinical diagnosis of Parkinson’s Disease (PD)

– Healthy

Exclusion Criteria:

– Subject does not have clinical diagnosis of PD, however, has another neurological
disorder/disease that manifests with symptoms of tremor or dysphonia

– Subject diagnosed with PD does not have dysphonia and tremor


  • Goalspal LLC, Pleasanton, California, United States, 94566
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