SLP Comprehensive Practice Exam 2026 - Free Speech-Language Pathology Practice Questions and Study Guide

In individuals with hypokinetic dysarthria, muscle tone is generally described as decreased. This condition is often associated with Parkinson's disease and similar disorders, where the rigidity often characteristic of other forms of dysarthria is not present. Instead, the muscles exhibit reduced tone, which can lead to a range of articulatory difficulties commonly seen in hypokinetic dysarthria, such as imprecise consonants and a softer voice. Decreased muscle tone can also contribute to an overall reduction in movement amplitude, referred to as "hypokinesia," which aligns with the speech characteristics of individuals with this condition.

The other possible descriptions—such as increased, variable, or normal muscle tone—do not accurately represent the characteristic of hypokinetic dysarthria, where there is a clear deficit in the regulation of muscle tone leading to speech challenges.