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Full-Text Articles in Medicine and Health Sciences
Loudness Matching In Individuals With Parkinson’S Disease And Hypophonia, Catherine Johnson
Loudness Matching In Individuals With Parkinson’S Disease And Hypophonia, Catherine Johnson
Electronic Thesis and Dissertation Repository
The purpose of the present study was to investigate speech loudness perception in 15 individuals with Parkinson’s disease (IWPD) and hypophonia (reduced speech intensity) and 15 healthy control (HC) participants. A loudness matching procedure was used to examine conditions involving speech loudness targets presented at various levels (60 to 80dB SPL). The loudness response conditions included manually controlled audio playback of external speech, self-vocalized speech, amplified self-speech, and speech projected to a distance of 2 meters. For most of the loudness matching conditions, the PD group did not demonstrate the predicted deficit in loudness matching. In some loudness matching conditions, …
Loudness Perception And Speech Intensity Control In Parkinson's Disease, Jenna Paula Clark
Loudness Perception And Speech Intensity Control In Parkinson's Disease, Jenna Paula Clark
Electronic Thesis and Dissertation Repository
This study investigated the role of loudness perception and selected auditory processes in 17 participants with hypophonia related to Parkinson’s disease (PD) and 25 controls. For most of the five loudness perception tasks (magnitude estimation, imitation, speech-to-noise judgment, magnitude production, magnitude production in noise), the PD participants produced a significantly different pattern and used a more restricted range than the controls in their self-generated estimates of speech intensity and judgments of speech loudness. Results from two self-assessment questionnaires (CETI-M, M-SAPP) found that the PD participants perceived themselves as less effective communicators than controls. An audiometric evaluation suggested that the PD …