Link to the University of Pittsburgh Homepage
Link to the University Library System Homepage Link to the Contact Us Form

Acoustic Intensity and Speech Breathing Kinematics in a Patient with Parkinson’s Disease

McGovern, Katherine (2020) Acoustic Intensity and Speech Breathing Kinematics in a Patient with Parkinson’s Disease. Master's Thesis, University of Pittsburgh. (Unpublished)

This is the latest version of this item.

Download (896kB) | Preview


Parkinson’s disease (PD) is a neurodegenerative disease which affects the basal ganglia control circuit (Duffy, 2013). The motor speech disorder most strongly associated with PD is hypokinetic dysarthria, which presents with distinctive speech characteristics including reduced loudness and the inability to adequately maintain loud speech (Darley, Aronson, & Brown 1969; Duffy 2013). This is due to the variable kinematics for speech breathing associated with PD, which may result in abnormal muscular excursions, reduced vital capacity, and irregular breathing cycles (Duffy, 2013). The impaired ventilatory control can be attributed to the rigidity of muscles of inhalation and exhalation, as well as bradykinesia and hypokinesia.

The study aimed to evaluate whether a patient with PD was able to manipulate their acoustic intensity, and if such intensity changes were accompanied by changes in speech breathing kinematics in a novel intraoperative environment.

The study’s data were collected intra-operatively during surgery for deep brain stimulation and recordings from the subthalamic nucleus and cortex. The patient was instructed to modulate acoustic intensity while repeating three syllable CV triplets. Speech breathing kinematics of the rib cage were obtained using a Piezo Crystal Effort Sensor with a double buckle band throughout speech production. The speech breathing kinematics of interest were duration, displacement, and peak velocity of inhalation, peak velocity of exhalation, and duration from onset of exhalation to onset of speech, as well as a descriptive comparison between tidal breathing and speech breathing.

Spearman Rho correlations indicated that there were weak to no relationships observed between speech breathing kinematics and intensity in this specific participant. However, a medium effect size (Hedge’s g) was observed between tidal and speech breathing for inhalation duration, and small to medium effect size for inhalation displacement and peak velocity.

While previous literature suggests that people with PD can manipulate intensity when cued as a result of kinematic modulations for speech breathing, the current study does not support these findings for this one patient. However, previously reported differences between tidal and speech breathing were supported. Potential explanations for the lack of intensity modulation are explored, including constraints induced by the intra-operative environment.


Social Networking:
Share |


Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
McGovern, Katherinekmm258@pitt.edukmm258
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Thesis AdvisorShaiman,
Committee MemberCoyle,
Committee MemberChandrasekaran,
Date: 19 June 2020
Date Type: Publication
Defense Date: 19 March 2020
Approval Date: 19 June 2020
Submission Date: 27 March 2020
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 73
Institution: University of Pittsburgh
Schools and Programs: School of Health and Rehabilitation Sciences > Communication Science and Disorders
Degree: MS - Master of Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: Loudness, respiration, DBS, speech intensity
Date Deposited: 19 Jun 2020 13:18
Last Modified: 19 Jun 2020 13:18

Available Versions of this Item


Monthly Views for the past 3 years

Plum Analytics

Actions (login required)

View Item View Item