Abstract
The relationship between postural disturbance and vertical perception after cerebrovascular disease remains unclear and studies have only recently begun to be conducted. On the other hand, the symptomatic aspect is evident: body lateropulsion is ipsilateral in the case of caudal brainstem lesions and contralateral in the case of rostral brainstem and cerebral hemispheric lesions. In addition, patients with cerebral hemispheric lesions sometimes show“pusher behavior” in which they resist any attempt to correct their posture and push the body back to the paralyzed side using the healthy limbs, as they have a fear of deviation to the healthy side. The pusher behavior is always accompanied by hemiplegia and is detected in about 10% of cases of hemispheric vascular lesions.
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