It is often difficult to quantify and distinguish aspects of abnormal muscle tone due to neurological injury. This makes it difficult to evaluate therapies that aim to reduce the effects of abnormal muscle tone. This research study will evaluate the feasibility of a clinician worn device to capture and quantify features of spasticity and dystonia.

Inclusion Criteria:

• Presentation of dystonia and/or spasticity or, if in control group, no neurological injury nor abnormal muscle tone
• Over the age of five.

Exclusion Criteria:

• Intolerable pain with manipulation of the knee, ankle, wrist, or elbow
• Limited range of motion in the knee, ankle, wrist or elbow due to orthopedic injury or severe contraction.
• Cognitive impairment resulting in inability to provide informed consent or complete the protocol.
• Under the age of five.

Sixty individuals, including individuals with and without abnormal muscle tone will be recruited for this study.