Ataxic Dysarthria
The lesions and etiologies of Apraxia of speech and ataxic dysarthria provide a foundation in understanding the correlating similarities and differences composed within the nature and details of these two disorders. Apraxia presents a dysfunction in the integration of coordinated motor plans that facilitate the muscles used in speech production. Motor planning dysfunction is typically caused by lesions within the left hemisphere of the brain, at, in, or, around broca's area, which furthermore affects multiple structures within the central nervous system that contribute to apraxic motor speech programming deficiency. (Pg 132 text and class notes) In contrast, ataxic dysarthria pertains to difficulties with motor incoordination, in preference
…show more content…
Whereas, apraxia of speech is primarily a disorder concerning the articulation of an individual's speech. The types of speech errors presented by these two disorders differ in that ataxic dysarthria is consistent and predictable, while Apraxia errors are consistent and unpredictable. (Dysarthria vs Apraxia cite) The most frequent errors present in ataxic dysarthria include the imprecise production of consonants, excess and equal stress, and irregular articulatory breakdowns. (pg 164) The errors concerned with apraxia are articulation errors, limited prosody, slowed rate of speech, and visible groping behaviors- where the tongue, lips, and mandible work to find the appropriate positioning needed to effectively produce words. (Pg 133). There are various other deviant speech characteristics that may potentially be present in ataxic dysarthria, some of which coincide with characteristics of Apraxia such as articulatory breakdowns, and a slowed speech rate. However, despite these intermixing characteristics involved, they are typically present on the less frequent range of commonality in apraxic dysarthria. Utterance complexity and rate of speech also differ in that apraxia complications are progressively affected by the production of syllables in words and sentences. In contrast, ataxic dysarthria does not affect the extent of of incorrect utterances. (Dysarthria vs Apraxia cite) Conversely, as ataxic dysarthria speech rate increases, the speech intelligibility will correspondingly decrease. Yet, in patients with apraxia an increased rate of speech generates an expansion of the individual's speech intelligibility (same
Whereas, apraxia of speech is primarily a disorder concerning the articulation of an individual's speech. The types of speech errors presented by these two disorders differ in that ataxic dysarthria is consistent and predictable, while Apraxia errors are consistent and unpredictable. (Dysarthria vs Apraxia cite) The most frequent errors present in ataxic dysarthria include the imprecise production of consonants, excess and equal stress, and irregular articulatory breakdowns. (pg 164) The errors concerned with apraxia are articulation errors, limited prosody, slowed rate of speech, and visible groping behaviors- where the tongue, lips, and mandible work to find the appropriate positioning needed to effectively produce words. (Pg 133). There are various other deviant speech characteristics that may potentially be present in ataxic dysarthria, some of which coincide with characteristics of Apraxia such as articulatory breakdowns, and a slowed speech rate. However, despite these intermixing characteristics involved, they are typically present on the less frequent range of commonality in apraxic dysarthria. Utterance complexity and rate of speech also differ in that apraxia complications are progressively affected by the production of syllables in words and sentences. In contrast, ataxic dysarthria does not affect the extent of of incorrect utterances. (Dysarthria vs Apraxia cite) Conversely, as ataxic dysarthria speech rate increases, the speech intelligibility will correspondingly decrease. Yet, in patients with apraxia an increased rate of speech generates an expansion of the individual's speech intelligibility (same