Diagnosis of Motor Speech Disorders

Darley, Frederic L.

doi:10.3109/asl2.1975.3.issue-1.03

Cited by 174 publications

(170 citation statements)

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Section: Parkinson's Diseasementioning

confidence: 99%

“…The four cardinal motor features of PD include resting tremor, muscle rigidity, bradykinesia or akinesia, and postural and gait instability (Darley, Aronson, & Brown, 1975). Additional motor features include hypomimia (masked face), dysphagia, dysarthria, shuffling gait, motor freezing, festination of gait movements, and reduced arm-swing during walking (Darley et al, 1975). There are also many non-motoric symptoms of PD, these include anxiety, fatigue, sleep disturbance, pain/numbness in limbs, as well as behavioral and mental symptoms such as depression, decreased motivation, slowed thinking, and a decline in cognition that can progress to dementia (Fahn, 2003).…”

Section: Parkinson's Diseasementioning

confidence: 99%

“…Hypokinetic speech is characterized by reduced range of oral movements, slowed speed of single movements, increased speed of repetitive movements with limited range, and reduced force of movement of the speech articulators (Darley et al, 1975).…”

Section: Hypokinetic Dysarthriamentioning

confidence: 99%

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Effect of concurrent walking and interlocutor distance on conversational speech intensity and rate in Parkinson's disease

et al. 2016

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This study examined the effects of concurrent walking tasks and interlocutor distance on conversational speech production in fifteen individuals with idiopathic Parkinson's disease (PD) and fourteen age-equivalent controls. Recent studies of speech in PD have demonstrated that changes in the behavioural conditions and the environmental context can have a powerful effect on the severity of speech symptoms in PD. This investigation focused on changes in speech intensity and speech rate in response to changes in walking speed and interlocutor distance. Results suggest that the introduction of a concurrent walking task significantly increased the conversational speech intensity of both controls and individuals with PD. When compared to sitting and talking or standing and talking, current walking and talking appeared to have an energizing effect on conversational speech intensity. In addition, walking faster was associated with a significant increase in conversational speech intensity relative to normal and slow walking speeds. These results provide important new information about the effect of concurrent walking on speech motor performance and speech symptom severity in PD. The potential energizing effect of concurrent walking conditions on conversational speech intensity may be an important consideration in the assessment and treatment of individuals with low speech intensity in PD.

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Section: Parkinson's Diseasementioning

confidence: 99%

Section: Parkinson's Diseasementioning

confidence: 99%

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Effect of concurrent walking and interlocutor distance on conversational speech intensity and rate in Parkinson's disease

et al. 2016

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“…These findings suggest that motor control capabilities are impaired in AOS, but not in CA. Results suggest that AOS has its basis in motor programming deficits, not impaired motor execution.In their taxonomy of motor speech disorders, Darley, Aronson, and Brown (1975) claimed that apraxia of speech (AOS) has its basis in the impaired planning and programming of speech motor patterns. Controversy about AOS in the ensuing decades focused on whether the disorder was best defined from a motoric or a linguistic perspective (for review see Ballard, Granier, & Robin, 2000;McNeil, Robin, & Schmidt, 2008).…”

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confidence: 99%

Visuomotor tracking abilities of speakers with apraxia of speech or conduction aphasia

et al. 2008

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This investigation examined the visuomotor tracking abilities of persons with apraxia of speech (AOS) or conduction aphasia (CA). In addition, tracking performance was correlated with perceptual judgments of speech accuracy. Five individuals with AOS and four with CA served as participants, as well as an equal number of healthy controls matched by age and gender. Participants tracked predictable (sinusoidal) and unpredictable signals using jaw and lip movements transduced with strain gauges. Tracking performance in participants with AOS was poorest for predictable signals, with decreased kinematic measures of cross-correlation and gain ratio and increased target-tracker difference. In contrast, tracking of the unpredictable signal by participants with AOS was performed as well as for other groups (e.g. participants with CA, healthy controls). Performance of the subjects with AOS on the predictable tracking task was found to strongly correlate with perceptual judgments of speech. These findings suggest that motor control capabilities are impaired in AOS, but not in CA. Results suggest that AOS has its basis in motor programming deficits, not impaired motor execution.In their taxonomy of motor speech disorders, Darley, Aronson, and Brown (1975) claimed that apraxia of speech (AOS) has its basis in the impaired planning and programming of speech motor patterns. Controversy about AOS in the ensuing decades focused on whether the disorder was best defined from a motoric or a linguistic perspective (for review see Ballard, Granier, & Robin, 2000;McNeil, Robin, & Schmidt, 2008). Data suggest that AOS is a disorder of motor control of the speech production system (e.g. Ballard & Robin, 2007;Itoh & Sasanuma, Address correspondence to: Donald A. Robin, Ph.D., Department of Otolaryngology-Head and Neck Surgery, The University of Texas Health Science Center at San Antonio, MC 7777, 7703 Floyd Curl Drive, San Antonio, TX 78229, robind@uthscsa.edu. Publisher's Disclaimer: This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. 1984; Kelso & Tuller, 1981;Kent & McNeil, 1987;Maas et al., 2006;McNeil, Caligiuri, & Rosenbek, 1989;McNeil, Weismer, Adams, & Mulligan, 1990). However, the database on movement control in AOS is remarkably limited. Consequently, an understanding and description of the movement patterns of speakers with apraxia remains elusive. NIH Public AccessA problem with much of the literature on AOS is that most studies have used individuals with multiple problems (e.g., apraxia and aphasia) or provided incomplete subject descriptions (McNeil et al., 2008). Relatively few studies have examined th...

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“…The subject then read aloud the standardized speech sample "The Grandfather Passage," which is included in Appendix C-2 (Darley, 1975). This was followed by a typed request to retell the joke practiced earlier.…”

Section: Table IVmentioning

confidence: 99%

Some effects of cochlear implant use on loudness modulation

Ross¹

2000

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Diagnosis of Motor Speech Disorders

Cited by 174 publications

References 0 publications

Effect of concurrent walking and interlocutor distance on conversational speech intensity and rate in Parkinson's disease

Effect of concurrent walking and interlocutor distance on conversational speech intensity and rate in Parkinson's disease

Visuomotor tracking abilities of speakers with apraxia of speech or conduction aphasia

Some effects of cochlear implant use on loudness modulation

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