Contribution of Two Sources of Listener Knowledge to Intelligibility of Speakers With Cerebral Palsy

Hustad, Katherine C.
October 2007
Journal of Speech, Language & Hearing Research;Oct2007, Vol. 50 Issue 5, p1228
Academic Journal
Purpose: This study examined the independent and combined effects of two sources of linguistic knowledge (alphabet cues and semantic predictability) on the intelligibility of speakers with dysarthria. The study also examined the extent to which each source of knowledge accounted for variability in intelligibility gains. Method: Eight speakers with cerebral palsy and dysarthria contributed speech samples, and 128 listeners transcribed the speech samples (16 listeners per speaker) in 4 different conditions (no cues and unpredictable sentences; no cues and predictable sentences; alphabet cues and unpredictable sentences; alphabet cues and predictable sentences). Listener transcription results were the dependent variable and were scored as the percentage of words identified correctly by listeners. Results: Both alphabet cues and semantic predictability made independent and overlapping contributions to intelligibility. In addition, alphabet cues accounted for more of the variability in gain scores than semantic predictability. Inseparable joint effects from the two sources of knowledge also made an important contribution to intelligibility. Conclusion: Alphabet cues may be a more powerful source of information for resolving lexical ambiguity than semantic predictability for listeners who are faced with dysarthric speech.


Related Articles

  • Integration of Metamodel and Acoustic Model for Dysarthric Speech Recognition. Matsumasa, Hironori; Takiguchi, Tetsuya; Ariki, Yasuo; I.-Chao Li; Nakabayashi, Toshitaka // Journal of Multimedia;Aug2009, Vol. 4 Issue 4, p254 

    We investigated the speech recognition of a person with articulation disorders resulting from athetoid cerebral palsy. The articulation of the first words spoken tends to be unstable due to the strain placed on the speech-related muscles, and this causes degradation of speech recognition....

  • Implementing Speech Supplementation Strategies: Effects on Intelligibility and Speech Rate of Individuals With Chronic Severe Dysarthria. Hustad, Katherine C.; Jones, Tabitha; Dailey, Suzanne // Journal of Speech, Language & Hearing Research;Apr2003, Vol. 46 Issue 2, p462 

    A growing body of experimental research suggests that speech supplementation strategies can markedly increase speech intelligibility for individuals with dysarthria (D. Beukelman & K. Yorkston, 1977; E. Crow & P. Enderby, 1989; L. Hunter, T. Pring, & S. Martin, 1991; K. C. Hustad & D. R....

  • Prosodic Control in Severe Dysarthria: Preserved Ability to Mark the Question-Statement Contrast. Patel, Rupal // Journal of Speech, Language & Hearing Research;Oct2002, Vol. 45 Issue 5, p858 

    Speakers with severe dysarthria are known to have reduced range in prosody. Consistent control within that range, however, has largely been ignored. In earlier investigations speakers with severe dysarthria were able to control pitch and duration for sustained vowel production despite reduced...

  • Listener Agreement for Auditory-Perceptual Ratings of Dysarthria. Bunton, Kate; Kent, Raymond D.; Duffy, Joseph R.; Rosenbek, John C.; Kent, Jane F. // Journal of Speech, Language & Hearing Research;Dec2007, Vol. 50 Issue 6, p1481 

    Purpose: Darley, Aronson, and Brown (1969a, 1969b) detailed methods and results of auditory-perceptual assessment for speakers with dysarthrias of varying etiology. They reported adequate listener reliability for use of the rating system as a tool for differential diagnosis, but several more...

  • Effect of high-frequency spectral components in computer recognition of dysarthric speech based on a Mel-cepstral stochastic model. Polur, Prasad D.; Miller, Gerald E. // Journal of Rehabilitation Research & Development;May/Jun2005, Vol. 42 Issue 3, p363 

    Computer speech recognition of individuals with dysarthria, such as cerebral palsy patients, requires a robust technique that can handle conditions of very high variability and limited training data. In this study, a hidden Markov model (HMM) was constructed and conditions investigated that...

  • Tongue mobility in patients with cerebral palsy. Živković, Zorica; Golubović, Slavica // Vojnosanitetski Pregled: Military Medical & Pharmaceutical Journ;Jun2012, Vol. 69 Issue 6, p488 

    Background/Aim. In children with cerebral palsy speech is a big problem. Speech of these children is more or less understandable, depending on the degree of reduced mobility of articulatory organs. Reduced mobility is affected by inability to control facial grimacing and poor muscle strength...

  • Speech Disorders in Cerebral Palsied Children and Adolescents: An Egyptian Experimental Study of a One-year Therapeutic Program. Khalifa, Nawal M.; Elfiky, M. R.; Basiony, S. // Research Journal of Medicine & Medical Sciences;2009, Vol. 4 Issue 1, p7 

    Cerebral palsy (CP) is often associated with speech abnormalities epilepsy, visual, hearing and intellectual deficits, behavioral, cognitive and developmental disabilities. The current concepts on management of CP subjects emphases the increasing concern for therapeutic components of this...

  • Intensive dysarthria therapy for older children with cerebral palsy: findings from six cases. Pennington, Lindsay; Smallman, Claire; Farrier, Faith // Child Language Teaching & Therapy;Oct2006, Vol. 22 Issue 3, p255 

    Children with cerebral palsy often have speech, language and communication difficulties that affect their access to social and educational activities. Speech and language therapy to improve the intelligibility of the speech of children with cerebral palsy has long been advocated, but there is a...

  • GOBBO - AN ALTERNATIVE COMMUNICATION TOOL TO STUDENTS OF APAE WITH CEREBRAL PALSY. Gobbo, Maria Renata M.; de Barbosa, Cinthyan Renata Sachs C.; Coleti, Thiago Adriano; de Sordi Junior, Fabio // International Conference Interfaces & Human Computer Interaction;2016, p259 

    This paper presents the process of developing an alternative communication tool to support the communication of people with cerebral palsy. This tool was developed aiming at improving the communication of cerebral palsy children allowing them to communicate with others through the selection of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics