Caudal paramedian midbrain syndrome.

Background: Caudal midbrain lesions involving the entire decussation of the superior cerebellar peduncles have a distinctive clinical picture: bilateral cerebellar ataxia, eye-movement disorders, and palatal myoclonus. Occasionally, unilateral lesions may produce a similar neurologic picture.

Objective: To define the clinical and radiologic picture of patients with unilateral lower midbrain ischemic lesions of the decussation of the brachium conjunctivum.

The role of P300 in the recovery of post-stroke global aphasia.

Seventeen right-handed patients suffering from global aphasia caused by a recent stroke in the left-hemisphere were studied. Passive P300 auditory event related potential paradigm was applied every months for 6 months. Aachen subtests were used for evaluating comprehension.

"Rubral" tremor after thalamic haemorrhage.

Tremors in association with thalamic haemorrhage have been infrequently reported, and delayed rubral tremor as a complication of such an event is quite rare. We describe a patient with a combined resting-postural-kinetic tremor due a thalamic haemorrhage. Magnetic resonance imaging showed evidence of a subthalamic involvement but failed to reveal any mesencephalic lesion.

The hemimedullary syndrome: case report and review of the literature.

Hemi-infarction of the medulla causes the clinical constellation of symptoms and signs of both the lateral and medial medullary syndromes and nearly always results from occlusion of an intracranial vertebral artery. In the case reported here, with a clinical diagnosis of hemimedullary syndrome, the expected infarction was imaged by magnetic resonance. A review of the literature confirms that the hemimedullary syndrome, in which both medial and lateral syndromes occur simultaneously, is extremely rare, since it yielded only two previous cases with adequate anatomical confirmation.