Inclusion criteria. Age ≥22. English speaking. Diagnosis of idiopathic Parkinson's disease of any Hoehn and Yahr stage (I-V), determined by a neurologist.

Mild to moderate sialorrhea defined as a score of ≥ 11* on the Radboud Oral Motor Inventory for Parkinson's Disease (ROMP)-Saliva (C) subscale Subjects must be in the "on" phase of their medication during all study assessments. The "on" phase is defined as the period when the participant's medication is at peak effectiveness, minimizing motor fluctuations and enabling optimal motor function.

Study Exclusion Criteria. History of aspiration pneumonia within the past 12 months. Unable to swallow saliva without a maneuver. Actively receiving treatment for swallowing disorders or sialorrhea. Current alcohol/drug abuse. Diagnosed with neurological disorders other than PD. End stage dementia. History of head and neck cancer or surgery. Unable to demonstrate competency with the user-friendly sensor platform technology.

Known allergy to contrast material used during MBSS. Known allergy to sensor adhesive. Indwelling tracheostomy tube. Nasogastric (NG) feeding tube. Currently pregnant.