Introduction to Associated Movement Associated Movement, often abbreviated as AM, is defined within the fields of neurology and motor control as the involuntary, often superfluous, contraction of muscles that are not strictly required for the execution of a primary, voluntary motor task. These movements are typically observed in body segments distant or functionally unrelated to […]
Acute Dystonia: A Movement Disorder The Core Definition of Acute Dystonia Acute Dystonia is defined as a neurological movement disorder characterized by sustained or intermittent muscle contractions that cause abnormal, often repetitive, movements or postures. The term “acute” is critical, signifying the rapid onset of these involuntary movements, typically occurring within hours to days of […]
Myoclonus: An Encyclopedia Entry on Involuntary Muscle Jerks The Core Definition and Mechanisms of Myoclonus Myoclonus is fundamentally defined as a brief, involuntary, and often shock-like contraction or jerking of a muscle or a group of muscles. This neurological phenomenon results in sudden, quick movements that are typically irregular and non-rhythmic, distinguishing them clearly from […]