Which feature of UUMN dysarthria is indicated by slow speech rate?

• A. Prosody
• B. Voice quality
• C. Resonance
• D. Articulation

Answer: (A)

The feature of UUMN (Unilateral Upper Motor Neuron) dysarthria indicated by a slow speech rate is prosody. In speech, prosody refers to the rhythm, stress patterns, and intonation that contribute to the expressiveness and naturalness of communication.

In UUMN dysarthria, individuals may exhibit a slowed speech rate due to the neuromuscular control issues stemming from unilateral damage in the upper motor neurons. This can lead to a lack of variation in pitch and loudness, making the speech sound monotone and less fluid. The decreased speech rate also impacts the overall melody and flow of speech, which are essential components of prosody.

Prosody is a critical aspect of speech that can be affected in various dysarthrias, but in the case of UUMN dysarthria, the slow rate of speech is a defining characteristic rather than other features such as voice quality, resonance, or articulation. Each of those other features can also be impacted by dysarthria, but they do not specifically relate to the speech rate in the way that prosody does.