What are the primary characteristics of spastic dysarthria?

• A. Tight, strained voice quality and slow, imprecise articulation
• B. Low, breathy voice with fast, clear articulation
• C. Excessive variability in pitch and loudness
• D. Soft voice quality with prolonged speech intervals

Answer: (A)

The primary characteristics of spastic dysarthria include a tight, strained voice quality and slow, imprecise articulation. This condition arises from bilateral damage to the upper motor neurons, which can lead to increased muscle tone and resistance to movement. As a result, individuals with spastic dysarthria often exhibit a harsh vocal quality due to excessive tension in the laryngeal muscles, making their speech sound strained or groaning. Furthermore, due to the slowed movement and coordination issues resulting from the muscle tightness, articulation can become imprecise, affecting the clarity of speech.

This combination of a strained voice and slow, imprecise speech highlights the neurological underpinnings of spastic dysarthria, distinguishing it from other types of dysarthria with different characteristic speech patterns.