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A standard test of cerebellar function is to reach with the tip of the finger for a target at arm's length: A healthy person will move the fingertip in a rapid straight trajectory, whereas a person with cerebellar damage will reach slowly and erratically, with many mid-course corrections. Deficits in non-motor functions are more difficult to ...
Romberg test – 2 out of the following 3 must be intact to maintain balance: i. vision ii. vestibulocochlear system iii. epicritic sensation "intact to sharp and dull throughout" Cerebellum: Cerebellar testing Dysmetria. Finger-to-nose test; Ankle-over-tibia test; Dysdiadochokinesis. Rapid pronation-supination; Ataxia Assessment of gait; Nystagmus
Romberg's test is not a test of cerebellar function, as it is commonly misconstrued. Patients with severe cerebellar ataxia will generally be unable to balance even with their eyes open; [ 6 ] therefore, the test cannot proceed beyond the first step and no patient with cerebellar ataxia can correctly be described as Romberg's positive.
Cerebellar signs usually involve balance and coordination, and may include: [citation needed] cerebellar ataxia a gait with a broad base; the patient falters to the side of the lesion ( ataxia ) inability to coordinate fine motor activities ( intention tremor ), e.g. "past-pointing" (pointing beyond the finger in the finger-nose test)
The Weber test also uses a tuning fork to differentiate between conductive versus sensorineural hearing loss. In this test, the tuning fork is placed at the top of the skull, and the sound of the tuning fork reaches both inner ears by travelling through bone. In a healthy patient, the sound would appear equally loud in both ears.
The human cerebellum is located at the base of the brain, with the large mass of the cerebrum above it, and the portion of the brainstem called the pons in front of it. It is separated from the overlying cerebrum by a layer of tough dura mater called the cerebellar tentorium; all of its connections with other parts of the brain travel through the pons.
Cerebellar degeneration is a condition in which cerebellar cells, otherwise known as neurons, become damaged and progressively weaken in the cerebellum. [1] There are two types of cerebellar degeneration; paraneoplastic cerebellar degeneration , and alcoholic or nutritional cerebellar degeneration. [ 2 ]
Dysdiadochokinesia is a feature of cerebellar ataxia and may be the result of lesions to either the cerebellar hemispheres or the frontal lobe (of the cerebrum), it can also be a combination of both. [3]