Signs of Cerebellar Disorders
Deficit | Manifestation |
|---|---|
Ataxia | Reeling, wide-based gait |
Decomposition of movement | Inability to correctly sequence fine, coordinated motor acts |
Dysarthria | Inability to articulate words correctly, with slurring |
Dysdiadochokinesia | Uncoordinated rapid alternating movements |
Dysmetria | Impaired ability to reach a target with goal-directed movement |
Hypotonia | Decreased muscle tone |
Nystagmus | Involuntary, rapid oscillation of the eyeballs in a horizontal, vertical, or rotary direction, with the fast component maximal toward the side of the cerebellar lesion |
Scanning speech | Slow enunciation with a tendency to hesitate at the beginning of a word or syllable |
Rhythmic, alternating, oscillatory movement of a limb as it approaches a target (intention tremor) or of proximal musculature when fixed posture or weight bearing is attempted (postural tremor); characterized by high amplitude and low frequency |