Which characteristic is associated with Spastic Dysarthria?

• A. Imprecise consonants
• B. Breathy phonation
• C. Hypernasality
• D. All of the above

Answer: (D)

Spastic Dysarthria is a motor speech disorder that results from damage to the upper motor neurons, leading to a combination of muscle weakness and spasticity. A defining characteristic of this type of dysarthria is its impact on various speech features, which include imprecise consonants, breathy phonation, and hypernasality.

Imprecise consonants occur because spasticity can affect the fine motor control required for the accurate production of consonant sounds, causing them to be produced less clearly. Breathiness in phonation arises from the difficulty in coordinating the respiratory and phonatory systems; individuals may not fully adduct their vocal folds, leading to air escaping during phonation. Hypernasality is another common characteristic where the velopharyngeal closure is inadequate, causing excessive nasal resonance during speech.

All of these features—imprecise consonants, breathy phonation, and hypernasality—tend to occur together in individuals with Spastic Dysarthria, which is why the answer encompasses all of them. Understanding these characteristics is crucial for diagnosis and effective treatment planning for individuals with this type of dysarthria.