The document discusses various symptoms of cerebellar dysfunction including intention tremor, dysmetria, dyssynergia, dysdiadochokinesia, ataxia, rebound phenomenon of Holmes, nystagmus, and dysarthria. The cerebellum is responsible for muscle control related to balance, movement coordination, and performing rapid alternating movements. Cerebellar lesions or damage can cause a variety of incoordination issues affecting different parts of the body.

1. Cerebellar function
Prepared by
CHINMAYEE SAHU
Assistant professor

2. • Cerebellar dysfunction can cause incoordination that can affect
coordination that may affect any body region and cause a variety of
clinical symptoms.
• Cerebellum responsible for muscle control, including balance and
movement

3. • Intention tremor is the rhythmic oscillating movement that develops
during precise intentional movements due to involuntary alternating
contractions of opposing muscles.

4. • Dysmetria is an inability to estimate the ROM necessary to reach the
target of movement.
• Two types of dysmetria are known.
• Hypermetria involves the limb overshooting the target.
• Conversely, hypometria involves the limb undershooting the target.

5. • Dyssynergia is a “decomposition of movement” in which voluntary
movements are broken up into their component parts and appear
jerky.
• Dyssynergia can also cause problems in articulation and phonation.

6. • Dysdiadochokinesia is impairment in the ability to perform repeated
alternating movements, such as pronation and supination, rapidly and
smoothly.
• Adiadochokinesia is the loss of ability to perform rapid alternating
movements

7. • Ataxia is unsteadiness, incoordination, or clumsiness of movement.
• Ataxic gait is a wide-based, unsteady, staggering gait with a tendency
to veer from side to side

8. Rebound Phenomenon of Holmes
• The rebound phenomenon of Holmes is the lack of a check reflex,
that is, the inability to stop a motion quickly to avoid striking
something.

9. Nystagmus
• Nystagmus is an involuntary movement of the eyeballs in an up-and-
down, back-and-forth, or rotating direction.
• It interferes with head control and fine adjustments required for
balance.
• Nystagmus can occur as a result of vestibular system, brainstem, or
cerebellar lesions.

10. Dysarthria
• Dysarthria is explosive or slurred speech caused by incoordination of
the speech mechanism.
• The client’s speech may also vary in pitch or may seem nasal and
tremulous, or both.

11. • BALANCE:B-Balance and coordination
• A-automicity of movement
• L-Learned movement
• A-Adjustment of posture
• Nystagamus
• Control of the movement
• Eye movement control