Dysarthria

About: Dysarthria is a research topic. Over the lifetime, 2402 publications have been published within this topic receiving 56554 citations.

Двигательные и речевые нарушения у пациента с инсультом в вертебробазилярном бассейне на фоне коронавирусной инфекции (клиническое наблюдение)

Abstract: Amidst the growing coronavirus infection (COVID-19) pandemic, there is increasing evidence of the development of neurological complications of this disease and, especially, acute cerebrovascular accidents, and what is more, an increase in incidence rates of strokes is noted in the patients under the age of 50, who did not have risk factors for cerebrovascular diseases. The article examines several potential mechanisms that determine the relationships between ischemic stroke and COVID-19. A clinical case of the development of ischemic stroke in the vertebrobasilar system affected by the coronavirus infection is presented. The causal relationship between coronavirus infection and vascular catastrophe is discussed. In the described case, COVID-19 contributed to the decompensation of the patient’s associated risk factors. A feature of the described case is the delayed development of a rare motor disorder in the form of Holmes tremor and combined speech disorders (dysarthria and aftereffects of motor aphasia) in the patient. Holmes tremor is an unusual type of tremor characterized by a combination of rest, postural, and action tremors that predominantly affects the proximal limbs. This symptom is named after the British neurologist Gordon Holmes, who described a series of cases of an unusual variant of tremulous hyperkinesis in 1904. The article discusses the pathogenesis issues of the development of this condition and provides clinical criteria for Holmes tremor. This is a rather rare symptom, there are no data on large studies of this disorder in the literature, and it is mainly described in small series of clinical cases. The efficacy of Akatinol Memantine in the treatment of post-stroke speech disorders is discussed, and the rationale for prescribing this drug in the management of patients with post-stroke speech disorders is presented.

Speech disorders in extrapyramidal diseases

Abstract: In patients with extrapyramidal diseases speech disturbances (dysarthria) are frequent. Dysarthria could have hypokinetic-hypertonic or hyperkinetic-hypotonic pattern. The frequency of them hesitates from 70 to 100% in patients with extrapyramidal symptoms. Clinimetric analysis of type and severity of dysarthria could be done by means of different scales useful in extrapyramidal diseases; Webster--Score Disability Rating Scale, Columbia Rating Scale or North Western University Disability Scale. The results obtained in these scales are subjective. Computer speech analysis could be useful in identification of speech disturbances. The waveforms and spectograms are used in assessment of speech intensity and frequency. The authors indicated to the usefulness of computer acoustic analysis in evaluations of speech disturbances in patients with extrapyramidal diseases as a repeatable and precise method.

Treatment efficacy : Dysarthria : Supplement on treatment efficacity: Part I

Abstract: The dysarthrias form a group of diverse, chronic motor speech disorders. The disorders of Parkinson's disease, stroke, traumatic brain injury, amyotrophic lateral sclerosis, and cerebral palsy are reviewed because they represent important clinical diagnoses in which dysarthria is a frequent and debilitating symptom. The roles played by speech-language pathologists include participation in differential diagnosis, provision of speech treatment, staging of treatment, and timely education so that clients and families can make informed decisions about communication alternatives. Both scientific and clinical evidence is presented that suggests that individuals with dysarthria benefit from the services of speech-language pathologists. Group-treatment studies, single-subject studies, and case reports illustrate the effectiveness of various types of speech treatment. Research into the effectiveness of augmentative and alternative communication systems for individuals with cerebral palsy is also presented.

Speech Clarity Index (ψ): A Distance-Based Speech Quality Indicator and Recognition Rate Prediction for Dysarthric Speakers with Cerebral Palsy

Abstract: It is a tedious and subjective task to measure severity of a dysarthria by manually evaluating his/her speech using available standard assessment methods based on human perception. This paper presents an automated approach to assess speech quality of a dysarthric speaker with cerebral palsy. With the consideration of two complementary factors, speech consistency and speech distinction, a speech quality indicator called speech clarity index (ψ) is proposed as a measure of the speaker's ability to produce consistent speech signal for a certain word and distinguished speech signal for different words. As an application, it can be used to assess speech quality and forecast speech recognition rate of speech made by an individual dysarthric speaker before actual exhaustive implementation of an automatic speech recognition system for the speaker. The effectiveness of ψ as a speech recognition rate predictor is evaluated by rank-order inconsistency, correlation coefficient, and root-mean-square of difference. The evaluations had been done by comparing its predicted recognition rates with ones predicted by the standard methods called the articulatory and intelligibility tests based on the two recognition systems (HMM and ANN). The results show that ψ is a promising indicator for predicting recognition rate of dysarthric speech. All experiments had been done on speech corpus composed of speech data from eight normal speakers and eight dysarthric speakers.