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Reliability Of Auditory-Perceptual Ratings Of Dysarthric Speech: Hypokinetic Dysarthria Secondary To Parkinson's Disease, Jessica Lynn Miller
Reliability Of Auditory-Perceptual Ratings Of Dysarthric Speech: Hypokinetic Dysarthria Secondary To Parkinson's Disease, Jessica Lynn Miller
LSU Master's Theses
Perceptual judgment has been the gold standard in clinical practice, especially regarding differential diagnosis and treatment of dysarthria. Thus, it is critical to establish the reliability of perceptual ratings of the speech characteristics associated with different types of dysarthria. Despite its importance, the reliability and sensitivity of perceptual ratings of speech disturbance have been somewhat questioned. The purpose of this study was to examine the interrater reliability of ratings of perceptual characteristics and the saliency of these characteristics as related to hypokinetic dysarthria. Due to the feasibility issue, the scope of the study was limited to hypokinetic dysarthria associated with …
Acoustic Realization Of Contrastive Stress In Individuals With Parkinson's Disease, Ana Maria Gaviria
Acoustic Realization Of Contrastive Stress In Individuals With Parkinson's Disease, Ana Maria Gaviria
LSU Master's Theses
This study investigated the acoustic correlates of contrastive stress produced by individuals with Parkinson’s disease (PD) to learn more about their ability to modulate acoustic cues to mark contrastive stress. Speech materials from 10 individuals with PD and 10 gender- and age-matched neurologically healthy controls (HC) were recorded and analyzed. The four acoustic measures (peak intensity, peak F0, vowel duration, and acoustic vowel space area) of stressed and unstressed syllables were compared to determine which acoustic parameters are preferentially employed by each group to mark contrastive stress. The results indicated that individuals with PD exhibited significant changes in vowel duration …
Effect Of Rate Reduction On Speech Intelligibility In Individuals With Dysarthria, Zachary Hall
Effect Of Rate Reduction On Speech Intelligibility In Individuals With Dysarthria, Zachary Hall
LSU Master's Theses
This study examined how speech rate reduction affects speech intelligibility in speakers with dysarthria associated with diverse neurological conditions. Three speakers with dysarthria were recorded reading a paragraph using conversational and reduced speech rates. The samples of both the conversational and slow rates were digitally edited to include silent pauses at the speakers’ natural breaks. The samples were then segmented into breath group utterances. Five samples with the greatest rate reductions from each speaker were used as stimuli, each presented in four rate conditions: conversational, slow, synthesized conversational, and synthesized slow. The listeners rated the intelligibility of 60 samples using …
Spectral Analysis Of Stop Consonants In Individuals With Dysarthria Secondary To Stroke, Trescha S. Kay
Spectral Analysis Of Stop Consonants In Individuals With Dysarthria Secondary To Stroke, Trescha S. Kay
LSU Master's Theses
Dysarthria refers to a group of neurogenic speech disorders which result in abnormal strength, speed, range, steadiness, tone, or accuracy of movements required for speech production. Although speech deficits of dysarthria are heterogeneous according to lesion sites and/or etiologies such as stroke, traumatic brain injury, cerebral palsy, Parkinson’s disease (PD), “imprecise consonants” has been known as one of the most prominent and frequently occurring features of dysarthria, which subsequently contributes to decreased speech intelligibility. The present study points out the paucity of acoustic data on consonants produced by speakers with dysarthria, especially by spectral analysis, and reports four spectral moment …
Examining The Effects Of Non-Intensive Therapy On Word Retrieval, Speech Intelligibility And Quality Of Life Following Intensive Therapy, Hillary Leigh Goodwin
Examining The Effects Of Non-Intensive Therapy On Word Retrieval, Speech Intelligibility And Quality Of Life Following Intensive Therapy, Hillary Leigh Goodwin
LSU Master's Theses
The purpose of this study was to determine if involvement in intensive treatment would help a patient with aphasia, secondary to a cerebral vascular accident, accompanied by dysarthria, maintain skill levels during non-intensive treatment. A literature review uncovered numerous studies on intensive treatment. These studies discussed the improvements the subjects were able to make across various areas during the time of intensive treatment; however, very little research was available to indicate these subjects’ success when re-entering non-intensive treatment. This study proposed two specific questions: was the subject able to maintain word retrieval, speech intelligibility, and quality of life levels from …